sae_confirm_immediate=2 can now be used in CONFIG_TESTING_OPTIONS=y
builds to minimize the latency between SAE Commit and SAE Confirm by
postponing transmission of SAE Commit until the SAE Confirm frame is
generated. This does not have significant impact, but can get the frames
tiny bit closer to each other over the air to increase testing coverage.
The only difference between sae_confirm_immediate 1 and 2 is in the
former deriving KCK, PMK, PMKID, and CN between transmission of the
frames (i.e., a small number of hash operations).
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Merge hostapd_drv_send_mlme_csa() functionality into
hostapd_drv_send_mlme() to get a single driver ops handler function for
hostapd. In addition, add a new no_encrypt parameter in preparation for
functionality that is needed to get rid of the separate send_frame()
driver op.
Signed-off-by: Jouni Malinen <j@w1.fi>
ieee802_11_allowed_address() did not really do anything useful for the
call from handle_probe_req(), so replace that with a direct call to
hostapd_allowed_address() and make ieee802_11_allowed_address() a static
function.
Signed-off-by: Jouni Malinen <j@w1.fi>
When returning from handle_auth() after ieee802_11_allowed_address()
returned HOSTAPD_ACL_ACCEPT, but before ieee802_11_set_radius_info() has
been called, identity, radius_cui, and psk might not have been consumed.
Fix this by avoiding the need to free these variables at all.
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
Previously, this case was ignored silently in AP mode. While that could
be a reasonable approach for an unexpected condition, it would be fine
to reject this case explicitly as well. This makes it somewhat easier to
test unexpected SAE H2E vs. looping behavior.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
check_sae_rejected_groups() returns 1, not -1, in case an enabled group
is rejected. The previous check for < 0 could not have ever triggered.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Previously, this case was ignored silently in AP mode. While that could
be a reasonable approach for an unexpected condition, it would be fine
to reject this case explicitly as well. This makes it somewhat easier to
test unexpected SAE H2E vs. looping behavior.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Previously, nonzero sae_h2e parameter values were used to perform SAE
H2E specific operations (deriving PT, adding RSNXE, adding H2E-only BSS
membership selector) in AP mode even if SAE was not enabled for the
network. This could result in unexpected behavior if sae_pwe=1 or
sae_pwe=2 were set in the configuration. Fix this by making the SAE
operations conditional on SAE being actually enabled.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
If hostapd had existing STA SAE state, e.g., from a previously completed
SAE authentication, a new start of a separate SAE authentication (i.e.,
receiving of a new SAE commit) ended up using some of the previous
state. This is problematic for determining whether to H2E vs. looping
since the STA is allowed (even if not really expected to) to change
between these two alternatives. This could result in trying to use H2E
when STA was using looping to derive PWE and that would result in SAE
confirm failing.
Fix this by determining whether to use H2E or looping for the restarted
authentication based on the Status Code in the new SAE commit message
instead of previously cached state information.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
If a STA indicates support for SAE H2E in RSNXE and H2E is enabled in
the AP configuration, require H2E to be used.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This is needed to be able to compare the received RSNXE to a protected
version in EAPOL-Key msg 2/4.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
When operating on the 6 GHz band, add 6 GHz Operation Information inside
the HE Operation element and don't publish HT/VHT IEs.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
- Replace HOSTAPD_MODE_IEEE80211AX mode checks with is_6ghz_op_class()
Signed-off-by: Vamsi Krishna <vamsin@codeaurora.org>
If hostapd is configured to enable only the hash-to-element version of
SAE PWE derivation (sae_pwe=1), advertise BSS membership selector to
indicate this.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
hostapd is by default waiting STA to send SAE Confirm before sending the
SAE Confirm. This can now be configured with sae_confirm_immediate=1
resulting in hostapd sending out SAE Confirm immediately after sending
SAE Commit.
These are the two different message sequences:
sae_confirm_immediate=0
STA->AP: SAE Commit
AP->STA: SAE Commit
STA->AP: SAE Confirm
AP->STA: SAE Confirm
STA->AP: Association Request
AP->STA: Association Response
sae_confirm_immediate=1
STA->AP: SAE Commit
AP->STA: SAE Commit
AP->STA: SAE Confirm
STA->AP: SAE Confirm
STA->AP: Association Request
AP->STA: Association Response
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Use the same rules for dropping driver notifications for Data frames
from unassociated stations as were added for Management frame reception.
This results in more consistent behavior in sending out Deauthentication
frames with Reason Code 6/7.
This case was already checking for unexpected multicast addresses, so
there was no issue for the PMF protections for unexpected disconnection.
Anyway, better avoid unnecessary Deauthentication frames consistently.
Signed-off-by: Jouni Malinen <j@w1.fi>
Do not process any received Management frames with unexpected/invalid SA
so that we do not add any state for unexpected STA addresses or end up
sending out frames to unexpected destination. This prevents unexpected
sequences where an unprotected frame might end up causing the AP to send
out a response to another device and that other device processing the
unexpected response.
In particular, this prevents some potential denial of service cases
where the unexpected response frame from the AP might result in a
connected station dropping its association.
Signed-off-by: Jouni Malinen <j@w1.fi>
Hardcode this to be defined and remove the separate build options for
PMF since this functionality is needed with large number of newer
protocol extensions and is also something that should be enabled in all
WPA2/WPA3 networks.
Signed-off-by: Jouni Malinen <j@w1.fi>
Even though the station is not supposed to include Hotspot 2.0
Indication element in the Association Request frame when connecting to
the open OSU BSS, some station devices seem to do so. With the strict
PMF-required-with-Hotspot-2.0-R2 interpretation, such connection
attempts were rejected. Relax this to only perform the PMF check if the
local AP configuration has PMF enabled, i.e., for the production BSS.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The HE capabilities are no longer per PHY but per iftype on this
specific PHY. It is therefore no longer enough to just parse the AP
capabilities.
The he_capabilities are now duplicated to store all information for
IEEE80211_MODE_* which hostap cares about. The nl80211 driver fills in
this information when the iftype supports HE. The rest of the code still
only uses the IEEE80211_HE_AP portion but can be extended later to also
use other HE capabilities.
Signed-off-by: Sven Eckelmann <seckelmann@datto.com>
This implements the required functionality in hostapd to facilitate OWE
connection with the AP SME-in-driver cases. Stations can either send DH
IE or PMKID (in RSNE) (or both) in Association Request frame during the
OWE handshake. The drivers that use this offload mechanism do not
interpret this information and instead, pass the same to hostapd for
further processing. hostapd will either validate the PMKID obtained from
the STA or generate DH IE and further indicate the same to the driver.
The driver further sends this information in the Association Response
frame.
Signed-off-by: Srinivas Dasari <dasaris@codeaurora.org>
Signed-off-by: Liangwei Dong <liangwei@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
External auth status to the driver includes the PMKID derived as part of
SAE authentication, but this is not valid if PMKSA caching is disabled.
Drivers might not be expecting PMKID when it is not valid. Do not send
the PMKID to the driver in such cases.
Signed-off-by: Srinivas Dasari <dasaris@codeaurora.org>
When a new station is added, let it have some supported rates
(they're empty without this change), using the basic rates
that it must support to connect.
This, together with the kernel-side changes for client-side,
lets us finish the complete auth/assoc handshake with higher
rates than the mandatory ones, without any further config.
However, the downside to this is that a broken station that
doesn't check the basic rates are supported before it tries
to connect will possibly not get any response to its auth
frame.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Process HE information in (Re)Association Request frames and add HE
elements into (Re)Association Response frames when HE is enabled in the
BSS.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
This copying attempt was added incorrectly since that element is never
actually present in (Re)Association Request frames. It is only valid to
copy that element from the mesh peering frames.
Signed-off-by: Jouni Malinen <j@w1.fi>
This AP behavior was missing from IEEE Std 802.11ai-2016, but it is
needed for the RSNE validation to work correctly and for a FILS STA to
be able to perform the mandatory check for RSNE matching when processing
the (Re)Association Response frame (as described in 802.11ai). REVmd
will be updating the standard to cover this AP case, so prepare the
implementation to match that. Without this, a FILS STA might reject
association whenever using FILS authentication.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Logs involving IEEE 802.11 Status Codes output the Status Code value,
but do not provide any explanation of what the value means. This change
provides a terse explanation of each status code using the latter part
of the Status Code #define names.
Signed-off-by: Alex Khouderchah <akhouderchah@chromium.org>
The PMK and PMKID information from FILS ERP and FILS PMKSA caching needs
to be stored within struct wpa_state_machine for PTK to work. Without
this, PTK derivation would fail and attempt to go through rekeying would
result in disconnection. Furthermore, wpa_rekey_ptk() timer needs to be
started at the completion of FILS association since the place where it
was done for non-FILS cases at the end of 4-way handshake is not reached
when FILS authentication is used.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
It is possible for the SAE state machine to remove the STA and free the
sta pointer in the mesh use cases. handle_auth_sae() could have
dereferenced that pointer and used freed memory in some cases. Fix that
by explicitly checking whether the STA was removed.
Fixes: bb598c3bdd ("AP: Add support for full station state")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
ap_free_sta() frees the sta entry, so sta->addr cannot be used after
that call. Fix the sequence of these two calls to avoid use of freed
memory to determine which PMKSA cache entry to remove.
Fixes: 9f2cf23e2e ("mesh: Add support for PMKSA caching")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The external authentication command and event does not need to copy the
BSSID/SSID values into struct external_auth since those values are used
before returning from the call. Simplify this by using const u8 * to
external data instead of the array with a copy of the external data.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Extend commit 5ff39c1380 ("SAE: Support external authentication
offload for driver-SME cases") to support external authentication
with drivers that implement AP SME by notifying the status of
SAE authentication to the driver after SAE handshake as the
driver acts as a pass through for the SAE Authentication frames.
Signed-off-by: Srinivas Dasari <dasaris@codeaurora.org>
This code was after the FILS handling that would have encrypted the
frame. While FILS and OWE are never used together, the OWE handling
should really be before the FILS handling since no IEs can be added
after the FILS encryption step. In addition, the Diffie-Hellman
Parameter element is not a Vendor Specific element, so it should be
before some of the Vendor Specific elements even though it is not
defined in IEEE 802.11.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Use Diffie-Hellman key exchange to derivate additional material for
PMK-to-PTK derivation to get PFS. The Diffie-Hellman Parameter element
(defined in OWE RFC 8110) is used in association frames to exchange the
DH public keys. For backwards compatibility, ignore missing
request/response DH parameter and fall back to no PFS in such cases.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The queue_len * 50 ms wait time was too large with the retransmission
timeouts used in the mesh case for SAE. The maximum wait of 750 ms was
enough to prevent successful completion of authentication after having
hit the maximum queue length. While the previous commit is enough to
allow this to complete successfully in couple of retries, it looks like
a smaller wait time should be used here even if it means potentially
using more CPU.
Drop the processing wait time to queue_len * 10 ms so that the maximum
wait time is 150 ms if the queue is full.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The previous design of simply queuing all SAE commit messages was not
exactly good at allowing recovery from a flooding state if the valid
peer used frequent retransmissions of the SAE message. This could
happen, e.g., with mesh BSSs using SAE. The frequent retransmissions and
restarts of SAE authentication combined with SAE confirm messages
bypassing the queue ended up in not being able to finish SAE exchange
successfully.
Fix this by modifying the queuing policy to queue SAE confirm messages
if there is a queued SAE commit message from the same peer so that the
messages within the same exchange do not get reordered. In addition,
replace queued SAE commit/confirm message if a new matching message is
received from the same peer STA. This is useful for the case where the
peer restarts SAE more quickly than the local end has time to process
the queued messages.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Derive PMKR1Name during the FILS authentication step, verify that the
station uses matching PMKR1Name in (Re)Association Request frame, and
add RSNE[PMKR1Name] into (Re)Association Response frame when going
through FT initial mobility domain association using FILS. These steps
were missed from the initial implementation, but are needed to match the
IEEE 802.11ai requirements for explicit confirmation of the FT key
hierarchy (similarly to what is done in FT 4-way handshake when FILS is
not used).
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This gets rid of a confusing error message "FILS: Failed to add PMKSA
cache entry based on ERP" for cases where PMKSA caching is disabled in
hostapd (disable_pmksa_caching=1). Functionality remains unchanged,
i.e., no cache entry was added before this change either.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Copy the Finite Cyclic Group field value from the request to the
response Authentication frame if we end up rejecting the request due to
unsupported group.
IEEE Std 802.11-2016 has conflicting statements about this behavior.
Table 9-36 (Presence of fields and elements in Authentication frames)
indicates that the Finite Cyclic Group field is only included with
status code values 0 (success) and 76 (anti-clogging token request)
while SAE protocol description implying that the Finite Cyclic Group
field is set to the rejected group (12.4.8.6.3 and 12.4.8.6.4).
The standard language needs to cleaned up to describe this
unambiguously, but since it looks safe to add the field into the
rejection case and since there is desire to have the field present to be
able to implement what exactly is stated in 12.4.8.6.4, it looks
reasonable to move ahead with the AP mode implementation change. There
is no change in wpa_supplicant for now to modify its behavior based on
whether this field is present, i.e., wpa_supplicant will continue to
work with both the old and new hostapd behavior for SAE group
negotiation.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Do not start SAE authentication from scratch if a STA starts a new
attempt for the same group while we still have previously generated PWE
available. Instead, use the previously generated PWE as-is and skip
anti-clogging token exchange since the heavy processing is already
completed. This saves unnecessary processing on the AP side in case the
STA failed to complete authentication on the first attempt (e.g., due to
heavy SAE load on the AP causing a timeout) and makes it more likely for
a valid STA to be able to complete SAE authentication during a DoS
attack.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Add a 16-bit token index into the anti-clogging token. This can be used
to enforce only a single use of each issued anti-clogging token request.
The token value is now token-index |
last-30-octets-of(HMAC-SHA256(sae_token_key, STA-MAC-address |
token-index)), i.e., the first two octets of the SHA256 hash value are
replaced with the token-index and token-index itself is protected as
part of the HMAC context data.
Track the used 16-bit token index values and accept received tokens only
if they use an index value that has been requested, but has not yet been
used. This makes it a bit more difficult for an attacker to perform DoS
attacks against the heavy CPU operations needed for processing SAE
commit since the attacker cannot simply replay the same frame multiple
times and instead, needs to request each token separately.
While this does not add significant extra processing/CPU need for the
attacker, this can be helpful in combination with the queued processing
of SAE commit messages in enforcing more delay during flooding of SAE
commit messages since the new anti-clogging token values are not
returned before the new message goes through the processing queue.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This allows better control of processing new SAE sessions so that other
operations can be given higher priority during bursts of SAE requests,
e.g., during a potential DoS attack. The receive commit messages are
queued (up to maximum of 15 entries) and processed from eloop callback.
If the queue has multiple pending entries, more wait time is used to go
through the each new entry to reduce heavy CPU load from SAE processing.
Enable anti-clogging token use also based on the pending commit message
queue and not only based on the already started sessions.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Change the AP mode default for SAE to enable only the group 19 instead
of enabling all ECC groups that are supported by the used crypto library
and the SAE implementations. The main reason for this is to avoid
enabling groups that are not as strong as the mandatory-to-support group
19 (i.e., groups 25 and 26). In addition, this disables heavier groups
by default.
In addition, add a warning about MODP groups 1, 2, 5, 22, 23, and 24
based on "MUST NOT" or "SHOULD NOT" categorization in RFC 8247. All the
MODP groups were already disabled by default and would have needed
explicit configuration to be allowed.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
According to IEEE Std 802.11-2016, 9.4.2.25 when fields of an RSNE are
not included, the default values are used. The cipher suite defaults
were hardcoded to CCMP in the previous implementation, but the default
is actually different for DMG: GCMP (per 9.4.2.25.2).
It is not possible to find out from the RSNE if the network is non-DMG
or DMG, so callers of wpa_parse_wpa_ie_rsn() need to handle this case
based on context, which can be different for each caller.
In order to fix this issue, add flags to the wpa_ie_data indicating
whether pairwise/group ciphers were included in the RSNE. Callers can
check these flags and fill in the appropriate ciphers. The
wpa_parse_wpa_ie_rsn() function still initializes the ciphers to CCMP by
default so existing callers will not break. This change also fixes some
callers which need to handle the DMG network case.
Signed-off-by: Lior David <liord@codeaurora.org>
The Multi-AP specification only specifies that information elements have
to be added to the Association Request and Association Response frame;
it doesn't specify anything about what should be done in case they are
missing. Previously, we rejected non-backhaul associations on a
backhaul-only BSS, and non-fronthaul associations on a fronthaul-only
BSS.
However, this makes WPS fail when fronthaul and backhaul are separate
SSIDs. Indeed, WPS for the backhaul link is performed on the *fronthaul*
SSID. Thus, the Association Request frmae used for WPS *will* contain
the Multi-AP IE indicating a backhaul STA. Rejecting that association
makes WPS fail.
Therefore, accept a multi-AP backhaul STA Association Request frame on a
fronthaul-only BSS. Still issue a warning about it, but only at level
DEBUG intead of INFO. Also change the condition checking to make it
clearer.
While we're at it, also fix the handling of unexpected bits in the
Multi-AP IE. 4 bits are reserved in the specification, so these
certainly have to be ignored. The specification also doesn't say that
setting one of the other bits is not allowed. Therefore, only report
unexpected values in the Multi-AP IE, don't reject because of it. Note
that a malformed IE (containing more than one byte) still triggers a
rejection.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
The new sae_password parameter [|vlanid=<VLAN ID>] can now be used to
assign stations to a specific VLAN based on which SAE Password
Identifier they use. This is similar to the WPA2-Enterprise case where
the RADIUS server can assign stations to different VLANs and the
WPA2-Personal case where vlanid parameter in wpa_psk_file is used.
Signed-off-by: Jouni Malinen <j@w1.fi>
FT-over-the-DS has a special case where the STA entry (and as such, the
TK) has not yet been configured to the driver depending on which driver
interface is used. For that case, allow add-STA operation to be used
(instead of set-STA). This is needed to allow mac80211-based drivers to
accept the STA parameter configuration. Since this is after a new
FT-over-DS exchange, a new TK has been derived after the last STA entry
was added to the driver, so key reinstallation is not a concern for this
case.
Fixes: 0e3bd7ac68 ("hostapd: Avoid key reinstallation in FT handshake")
Signed-off-by: Jouni Malinen <j@w1.fi>
Try to make RSSI-based rejection of associating stations a bit less
likely to trigger false rejections by considering RSSI from the last
received Authentication frame. Association is rejected only if both the
Authentication and (Re)Association Request frames are below the RSSI
threshold.
Signed-off-by: Jouni Malinen <j@w1.fi>
An AP might reject a STA association request due to low RSSI. In such
case, the AP informs the STA the desired RSSI improvement and a retry
timeout. The STA might retry to associate even if the RSSI hasn't
improved if the retry timeout expired.
Signed-off-by: Beni Lev <beni.lev@intel.com>
The purpose of Multi-AP specification is to enable inter-operability
across Wi-Fi access points (APs) from different vendors.
This patch introduces one new configuration parameter 'multi_ap' to
enable Multi-AP functionality and to configure the BSS as a backhaul
and/or fronthaul BSS.
Advertise vendor specific Multi-AP capabilities in (Re)Association
Response frame, if Multi-AP functionality is enabled through the
configuration parameter.
A backhaul AP must support receiving both 3addr and 4addr frames from a
backhaul STA, so create a VLAN for it just like is done for WDS, i.e.,
by calling hostapd_set_wds_sta(). Since Multi-AP requires WPA2 (never
WEP), we can safely call hostapd_set_wds_encryption() as well and we can
reuse the entire WDS condition.
To parse the Multi-AP Extension subelement, we use get_ie(): even though
that function is meant for parsing IEs, it works for subelements.
Signed-off-by: Venkateswara Naralasetty <vnaralas@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Include an OCI element in SA Query Request and Response frames if OCV
has been negotiated.
On Linux, a kernel patch is needed to let clients correctly handle SA
Query Requests that contain an OCI element. Without this patch, the
kernel will reply to the SA Query Request itself, without verifying the
included OCI. Additionally, the SA Query Response sent by the kernel
will not include an OCI element. The correct operation of the AP does
not require a kernel patch.
Without the corresponding kernel patch, SA Query Requests sent by the
client are still valid, meaning they do include an OCI element.
Note that an AP does not require any kernel patches. In other words, SA
Query frames sent and received by the AP are properly handled, even
without a kernel patch.
As a result, the kernel patch is only required to make the client properly
process and respond to a SA Query Request from the AP. Without this
patch, the client will send a SA Query Response without an OCI element,
causing the AP to silently ignore the response and eventually disconnect
the client from the network if OCV has been negotiated to be used.
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@cs.kuleuven.be>
APs and mesh peers use the VHT Operation element to advertise certain
channel properties (e.g., the bandwidth of the channel). Save this
information element so we can later access this information.
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@cs.kuleuven.be>
It is better not to process a new (most likely repeated) FILS HLP
request if a station retransmits (Re)Association Request frame before
the previous HLP response has either been received or timed out. The
previous implementation ended up doing this and also ended up
rescheduling the fils_hlp_timeout timer in a manner that prevented the
initial timeout from being reached if the STA continued retransmitting
the frame. This could result in failed association due to a timeout on
the station side.
Make this more robust by processing (and relaying to the server) the HLP
request once and then ignoring any new HLP request while the response
for the relayed request is still pending. The new (Re)Association
Request frames are otherwise processed, but they do not result in actual
state change on the AP side before the HLP process from the first
pending request is completed.
This fixes hwsim test case fils_sk_hlp_oom failures with unmodified
mac80211 implementation (i.e., with a relatively short retransmission
timeout for (Re)Association Request frame).
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
If association failed for any non-OWE specific reason, the previous
implementation tried to add the OWE related IEs into the (Re)Association
Response frame. This is not needed and could actually result in
dereferencing a NULL pointer. Fix this by adding those OWE related IEs
only for successful association and only if the RSN state machine has
been initialized.
Signed-off-by: Jouni Malinen <j@w1.fi>
Both handle_action() and hostapd_action_rx() are used for processing
received Action frames depending on what type of driver architecture is
used (MLME in hostapd vs. driver) and which build options were used to
build hostapd. These functions had a bit different sequence for checking
the frame and printing debug prints. Make those more consistent by
checking that the frame includes the category-specific action field and
some payload. Add a debug print for both functions to make it easier to
see which path various Action frames use.
Signed-off-by: Jouni Malinen <j@w1.fi>
Previous implementation ended up triggering PMF check for previous
association and SA Query procedure incorrectly in cases where there is a
STA entry in hostapd, but that STA is not in associated state. This
resulted in undesired temporary rejection of the association with status
code 30.
This ended up breaking OWE group negotiation when PMF is in use since
the check for the OWE group would have happened only after this earlier
PMF check and rejection (i.e., the station got status code 30 instead of
the expected 77).
For example, when the AP is configured with OWE group 21 and a station
tries groups 19, 20, and 21 (in this sequence), the first two
Association Request frames should be rejected with status code 77.
However, only the first one got that status code while the second one
got status code 30 due to that issue with PMF existing association
check.
Furthermore, hostapd was continuing with SA Query procedure with
unencrypted Action frames in this type of case even though there was no
existing association (and obviously, not an encryption key either).
Fix this by checking that the STA entry is in associated state before
initiating SA Query procedure based on the PMF rules.
Signed-off-by: Ashok Kumar <aponnaia@codeaurora.org>
This message was printed and MSG_INFO level which would be more
reasonable for error cases where hostapd has accepted authentication.
However, this is not really an error case for the cases where
authentication was rejected (e.g., due to MAC ACL). Drop this to use
MSG_DEBUG level.
Signed-off-by: Jouni Malinen <j@w1.fi>
When Probe Request frame handling was extended to use MAC ACL through
ieee802_11_allowed_address(), the MSG_INFO level log print ("Station
<addr> not allowed to authenticate") from that function ended up getting
printed even for Probe Request frames. That was not by design and it can
result in excessive logging and MSG_INFO level if MAC ACL is used.
Fix this by printing this log entry only for authentication and
association frames. In addition, drop the priority of that log entry to
MSG_DEBUG since this is not really an unexpected behavior in most MAC
ACL use cases.
Fixes: 92eb00aec2 ("Extend ACL check for Probe Request frames")
Signed-off-by: Jouni Malinen <j@w1.fi>
If you modify the WLAN-STA-AUTHORIZED bit in sta->flags, you have to
call the ap_sta_set_authorized() function to make sure the corresponding
event is sent over the control interface. Otherwise we leak entries in
the event history.
Signed-off-by: Andreas Tobler <andreas.tobler@cloudguard.ch>
In the infrastructure BSS case, the AP needs to clear pending SAE state
if a new Commit message is received when already in Committed state.
This allows the non-AP STA to negotiate a new group if it ends up trying
to go through SAE authentication again before the AP side has removed
the previous STA entry.
This fixes an issue where a kernel update changed something in SAE
timing or authentication sequence and started failing the
sae_bignum_failure hwsim test case.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
A new SAE Commit message should not be allowed to drop an existing STA
entry since the sender of that Commit message cannot be authenticated
before receiving the Confirm message. This is important in particular
when PMF is used since this would provide a potential new path for
forcing a connection to be dropped.
Fix this by allowing a new SAE Authentication instance to be started
when the old instance is in Accepted state and the new Commit message
does not use the same peer-scalar value (checked in
sae_parse_commit_scalar()). When PMF is used, the AP will use SA Query
procedure when receiving the (Re)Association Request frame. In theory,
that step could be skipped in case of SAE Authentication since the
non-AP STA is demonstrating knowledge of the password. Anyway, there is
no allowance for that exception in the IEEE 802.11 standard, so at least
for now, leave this using SA Query procedure just like any other PMF
case.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Instead of sending out a partially completed frame, abort the
association process if something unexpected happens and remove the STA
entry.
Signed-off-by: Jouni Malinen <j@w1.fi>
The MIC field is now a variable length field, so make FTE generation in
hostapd aware of the two different field lengths.
Signed-off-by: Jouni Malinen <j@w1.fi>
This extends the SAE implementation in both infrastructure and mesh BSS
cases to allow an optional Password Identifier to be used. This uses the
mechanism added in P802.11REVmd/D1.0. The Password Identifier is
configured in a wpa_supplicant network profile as a new string parameter
sae_password_id. In hostapd configuration, the existing sae_password
parameter has been extended to allow the password identifier (and also a
peer MAC address) to be set. In addition, multiple sae_password entries
can now be provided to hostapd to allow multiple per-peer and
per-identifier passwords to be set.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This extends hostapd processing of (Re)Association Request frames to
store a local copy of the Consortium OI within the Roaming Consortium
Selection element, if present, and then add that in HS 2.0 Roaming
Consortium attribute into RADIUS Access-Request messages.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This is needed to allow the remaining session time to be computed for FT
(when sending PMK-R1 to another AP).
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
ieee802_11_set_radius_info() might be called with a STA entry that has
already stored identity and/or radius_cui information, so make sure the
old values get freed before being replaced by the new ones.
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
Previously, the association that used SAE authentication ended up
recalculating the PMKID for EAPOL-Key msg 1/4 using incorrect
PMK-to-PMKID derivation instead of using the previously derived PMKID
from SAE. The correct PMKID was used only when going through PMKSA
caching exchange with a previously derived PMKSA from SAE.
Fix this by storing the SAE PMKID into the state machine entry for the
initial SAE authentication case when there is no explicit PMKSA entry
attached to the station.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This makes it easier to understand what kind of information a STA is
reporting about 20/40 MHz coexistence requirements.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Check wpa_auth_write_assoc_resp_owe() return value to keep static
analyzers happier. The code path where this could happen is not really
reachable due to the separate hapd->conf->own_ie_override check and
wpa_auth_write_assoc_resp_owe() returning NULL only in an error case in
the override path. Furthermore, clean up the pointer return value to use
a proper pointer (NULL vs. 0).
Signed-off-by: Ashok Ponnaiah <aponnaia@codeaurora.org>
Extend ACL check to deny Probe Request frames for the client which does
not pass ACL check. Skip this check for the case where RADIUS ACL is
used to avoid excessive load on the RADIUS authentication server due to
Probe Request frames. This patch add wpa_msg event for auth and assoc
rejection due to acl reject.
Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org>
Check for the fi parameter to be non-NULL before trying to fetch the
ssi_signal information similarly to how the fi->freq was already
handled. While the meta information is supposed to be available, it
looks like there is at least one corner case where fi == NULL could be
used (Authentication frame reprocessing after RADIUS-based ACL).
Signed-off-by: Jouni Malinen <j@w1.fi>
This function is used to process a (Re)Association Request frame, so
rename it appropriately to mention assoc_req instead of auth_req.
Signed-off-by: Ashok Ponnaiah <aponnaia@codeaurora.org>
Verify that the STA has ECDH data available before trying to use this
data to add the OWE DH Params element.
Signed-off-by: Ashok Ponnaiah <aponnaia@codeaurora.org>
This was already the case with the hostapd-based SME/MLME
implementation, but the OWE DH Param element construction for the
driver-based SME/MLME needed a matching change to set the group
properly.
Signed-off-by: Ashok Ponnaiah <aponnaia@codeaurora.org>
If a matching PMKSA cache entry is present for an OWE client, use it and
do not go through DH while processing Association Rquest frame.
Association Response frame will identify the PMKID in such a case and DH
parameters won't be present.
Signed-off-by: Ashok Ponnaiah <aponnaia@codeaurora.org>
Use "cipher out of policy" value instead of invalid group cipher (which
is for the group data frame cipher) and management frame policy
violation (which is used for MFPC/MFPR mismatch).
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Not all code paths for management frame RX reporting delivered the
correct frequency for offchannel RX cases. This is needed mainly for
Public Action frame processing in some special cases where AP is
operating, but an exchange is done on a non-operational channel. For
example, DPP Initiator role may need to do this.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Set Sc to 2^16-1 when moving to Accepted state per IEEE Std 802.11-2016,
12.4.8.6.5 (Protocol instance behavior - Confirmed state). This allows
the peer in Accepted state to silently ignore unnecessary
retransmissions of the Confirm message.
Signed-off-by: Jouni Malinen <j@w1.fi>
This implements the behavior described in IEEE Std 802.11-2016,
12.4.8.6.6 (Protocol instance behavior - Accepted state) to silently
discard received Confirm message in the Accepted state if the new
message does not use an incremented send-confirm value or if the special
2^16-1 value is used. This avoids unnecessary processing of
retransmitted Confirm messages.
Signed-off-by: Jouni Malinen <j@w1.fi>
The new hostapd.conf parameter sae_sync (default: 5) can now be used to
configure the dot11RSNASAESync value to specify the maximum number of
synchronization errors that are allowed to happen prior to
disassociation of the offending SAE peer.
Signed-off-by: Jouni Malinen <j@w1.fi>
If fils_decrypt_assoc() were to fail on the AP side, the previous
implementation could have continued through the response generation
using left = -1. That could have resulted in unexpected processing if
this value were to be used as the length of the remaining (unencrypted)
IEs. Fix this by not updating left in the failure case.
Fixes: 78815f3dde ("FILS: Decrypt Association Request elements and check Key-Auth (AP)")
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The previously used WLAN_REASON_MICHAEL_MIC_FAILURE (14) value as a
response to Authentication frame or (Re)Association Request frame is not
correct since the resp value is encoded in the Status Code (not Reason
Code) field. Status Code 14 is WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION
which is really what this value would have meant in the response frames.
There is no Michael MIC failure status code, so have to use the generic
"Unspecified failure" (1) reason code for these cases.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This provides access to the Minimum/Maximum Transmit Power Capabilitie
fileds (the nominal minimum/maximum transmit power with which the STA
is capable of transmitting in the current channel; signed integer in
units of decibels relative to 1 mW).
Signed-off-by: bhagavathi perumal s <bperumal@qti.qualcomm.com>
Handle OWE DH exchange and key setup when processing the association
event from a driver that implements AP SME.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
While most places using this should be for cases where the hw_features
functionality is required, there seem to be some paths that are getting
exposed in new OWE related operations where that might not be the case.
Add explicit NULL pointer checks to avoid dereferencing the pointer if
it is not set when operating with driver wrappers that do not provide
sufficient information.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The previous implementation ended up starting a new EAPOL-Key 4-way
handshake if the STA were to attempt to perform another association.
This resulted in immediate disconnection since the PTK was not ready for
configuring FILS TK at the point when EAPOL-Key msg 1/4 is sent out.
This is better than alloing the association to continue with the same TK
reconfigured, but not really ideal.
Address this potential sequence by not starting a new 4-way handshake on
the additional association attempt. Instead, allow the association to
complete, but do so without reconfiguring the TK to avoid potential
issues with PN reuse with the same TK.
Signed-off-by: Jouni Malinen <j@w1.fi>
This allows ext_mgmt_frame_handling=1 cases with hostapd to process TX
status events based on external processing. This is useful for increased
test coverage of management frame processing.
Signed-off-by: Jouni Malinen <j@w1.fi>
Do not reinstall TK to the driver during Reassociation Response frame
processing if the first attempt of setting the TK succeeded. This avoids
issues related to clearing the TX/RX PN that could result in reusing
same PN values for transmitted frames (e.g., due to CCM nonce reuse and
also hitting replay protection on the receiver) and accepting replayed
frames on RX side.
This issue was introduced by the commit
0e84c25434 ('FT: Fix PTK configuration in
authenticator') which allowed wpa_ft_install_ptk() to be called multiple
times with the same PTK. While the second configuration attempt is
needed with some drivers, it must be done only if the first attempt
failed.
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@cs.kuleuven.be>
The new sae_password hostapd configuration parameter can now be used to
set the SAE password instead of the previously used wpa_passphrase
parameter. This allows shorter than 8 characters and longer than 63
characters long passwords to be used. In addition, this makes it
possible to configure a BSS with both WPA-PSK and SAE enabled to use
different passphrase/password based on which AKM is selected.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The new hostapd configuration parameter owe_groups can be used to
specify a subset of the allowed DH groups as a space separated list of
group identifiers.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This extends OWE support in hostapd to allow DH groups 20 and 21 to be
used in addition to the mandatory group 19 (NIST P-256).
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This is not normally done in RSN, but RFC 8110 seems to imply that AP
has to include OWE AKM in the RSNE within these frames. So, add the RSNE
to (Re)Association Response frames when OWE is being negotiated.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
In fils_hlp_finish_assoc() the station is already added to the
driver so it is not needed to check the 'added_unassociated'
flag.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
This part is missing from IEEE Std 802.11ai-2016, but the lack of DHss
here means there would not be proper PFS for the case where PMKSA
caching is used with FILS SK+PFS authentication. This was not really the
intent of the FILS design and that issue was fixed during REVmd work
with the changes proposed in
https://mentor.ieee.org/802.11/dcn/17/11-17-0906-04-000m-fils-fixes.docx
that add DHss into FILS-Key-Data (and PTK, in practice) derivation for
the PMKSA caching case so that a unique ICK, KEK, and TK are derived
even when using the same PMK.
Note: This is not backwards compatible, i.e., this breaks PMKSA caching
with FILS SK+PFS if only STA or AP side implementation is updated.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The new sae_commit_override=<hexdump> parameter can be used to force
hostapd to override SAE commit message fields for testing purposes. This
is included only in CONFIG_TESTING_OPTIONS=y builds.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Allow hostapd to be configured to perform SAE reflection attack for SAE
testing purposes with sae_reflection_attack=1 configuration parameter.
This is included only in CONFIG_TESTING_OPTIONS=y builds.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Previously, CONFIG_WNM enabled build that supports WNM for both
station mode and AP mode. However, in most wpa_supplicant cases only
station mode WNM is required and there is no need for AP mode WNM.
Add support to differentiate between station mode WNM and AP mode
WNM in wpa_supplicant builds by adding CONFIG_WNM_AP that should be
used when AP mode WNM support is required in addition to station mode
WNM. This allows binary size to be reduced for builds that require
only the station side WNM functionality.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
dpp.h file requires openssl in order to compile, which breaks
compilation on systems without it.
Move DPP_OUI_TYPE to ieee802_11_defs.h and don't include dpp.h when
not really needed.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
hostapd did not add a new PMKSA cache entry when FILS shared key
authentication was used, i.e., only the initial full authentication
resulted in a PMKSA cache entry being created. Derive the PMKID for the
ERP case as well and add a PMKSA cache entry if the ERP exchange
succeeds.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The EAP message included in FILS Wrapped Data from the non-AP STA to the
AP is EAP-Initiate/Re-auth.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Allow hostapd to initiate and respond with PKEX bootstrapping similarly
to how this was implemented in wpa_supplicant.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This new AKM is used with DPP when using the signed Connector to derive
a PMK. Since the KCK, KEK, and MIC lengths are variable within a single
AKM, this needs number of additional changes to get the PMK length
delivered to places that need to figure out the lengths of the PTK
components.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This adds DPP bootstrapping, authentication, and configuration into
hostapd similarly to how the design was integrated in wpa_supplicant.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
hostapd processes a received 20/40 BSS Coexistence management frame, but
if no separate callbacks are registered for handling Public Action
frames it eventually sends a reply with MSB of category code set to 1
thinking that the received frame is an invalid frame. This could happen
based on whether hostapd was built and enabled with functionality using
the callback functions.
Fix this by explicitly returning 1 from the function when the 20/40 BSS
Coexistence Management frame is processed.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The conditional gSTA and gAP (DH public keys) were not previously
included in Key-Auth derivation, but they are needed for the PFS case.
Signed-off-by: Jouni Malinen <j@w1.fi>
Allow this function to be called from outside ieee802_11.c and with the
final steps replaced through a callback function.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This function does not need the frame header, so pass in only the IE
area to make it easier to share this for driver-based AP SME handling.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
MDE was already added with RSNE, but FTE needed to be added to the FILS
Authentication frame for the FT initial mobility domain association
using FILS authentication case.
Signed-off-by: Jouni Malinen <j@w1.fi>
This adds an option to configure hostapd to enable use of perfect
forward secrecy option in FILS shared key authentication. A new build
option CONFIG_FILS_SK_PFS=y can be used to include this functionality. A
new runtime configuration parameter fils_dh_group is used to enable this
by specifying which DH group to use. For example, fils_dh_group=19 would
allow FILS SK PFS to be used with a 256-bit random ECP group.
Signed-off-by: Jouni Malinen <j@w1.fi>
This adds AP side processing for OWE Diffie-Hellman Parameter element in
(Re)Association Request frame and adding it in (Re)Association Response
frame.
Signed-off-by: Jouni Malinen <j@w1.fi>
This leads to cleaner code overall, and also reduces the size
of the hostapd and wpa_supplicant binaries (in hwsim test build
on x86_64) by about 2.5 and 3.5KiB respectively.
The mechanical conversions all over the code were done with
the following spatch:
@@
expression SIZE, SRC;
expression a;
@@
-a = os_malloc(SIZE);
+a = os_memdup(SRC, SIZE);
<...
if (!a) {...}
...>
-os_memcpy(a, SRC, SIZE);
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This allows PMKSA cache entries to be shared between all the BSSs
operated by the same hostapd process when those BSSs use the same FILS
Cache Identifier value.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 91d91abf6f ('FILS: DHCP relay for
HLP requests') added steps that are conditional on sta->fils_hlp_resp
being non-NULL. One of these cases within send_assoc_resp() was properly
protected from sta == NULL error case (that is now possible after a
recent DMG change), but the first one was not. A DMG error case in a
CONFIG_FILS=y build could have hit a NULL pointer dereference here. Fix
this by verifying sta != NULL more consistently.
Signed-off-by: Jouni Malinen <j@w1.fi>
The new dhcp_server configuration parameter can now be used to configure
hostapd to act as a DHCP relay for DHCPDISCOVER messages received as
FILS HLP requests. The dhcp_rapid_commit_proxy=1 parameter can be used
to configure hostapd to convert 4 message DHCP exchange into a 2 message
exchange in case the DHCP server does not support DHCP rapid commit
option.
The fils_hlp_wait_time parameter can be used to set the time hostapd
waits for an HLP response. This matches the dot11HLPWaitTime in IEEE Std
802.11ai-2016.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This is independent functionality from the core IEEE 802.11 management
handling and will increase significantly in size, so it is cleaner to
maintain this in a separate source code file.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
With device_ap_sme disabled, ACL was checked upon authentication
request. In 802.11ad there is no authentication phase so need to check
ACL upon association.
Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
This adds parsing of received FILS HLP requests from (Re)Association
Request frames. The reassembled requests are verified to be in valid
format and are printed in debug output. However, actual processing or
forwarding of the packets is not yet implemented, i.e., the vendor
specific frame filtering logic is for now practically dropping all HLP
requests.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Relational operators (==) have higher precedence than the ternary
conditional in C. The last_subtype check for association/reassociation
was broken due to incorrect assumption about the precedence. Fix this by
adding parenthesis around the ternary conditional.
The previous implementation worked for Association Request frames by
accident since WLAN_FC_STYPE_ASSOC_REQ happens to have value 0 and when
the last receive frame was an Association Request frame, the
sta->last_subtype == reassoc check was true and non-zero
WLAN_FC_STYPE_REASSOC_REQ was interpreted as true. However, this was
broken for Reassociation Request frame. reassoc == 1 in that case could
have matched received Association Response frame (subtype == 1), but
those are not received in AP mode and as such, this did not break other
behavior apart from not being able to drop duplicated Reassociation
Request frames.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This adds helper functions for deriving PMK and PMKID from ERP exchange
in FILS shared key authentication as defined in IEEE Std 802.11ai-2016,
12.12.2.5.2 (PMKSA key derivation with FILS authentication). These
functions is used to fix PMK and PMKID derivation which were previously
using the rMSK directly as PMK instead of following the FILS protocol to
derive PMK with HMAC from nonces and rMSK.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Check the action TX status callback contents more thoroughly and report
the BEACON-REQ-TX-STATUS event only if the Measurement Type indicates
beacon report.
Signed-off-by: Jouni Malinen <j@w1.fi>
Authentication and Deauthentication frames are not used in DMG/IEEE
802.11ad networks. For DMG/IEEE 802.11ad the following was implemented:
Upon receiving association request, allocate the sta object and
initialize it as if authentication took place. Upon receiving
disassociation, deallocate the sta object.
ap_sta_disassociate/ap_sta_deauthenticate/ap_sta_disconnect all use
disassociation instead of deauthentication. In driver_nl80211,
i802_sta_deauth() is routed to i802_sta_disassoc().
Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Supported Rates element is not present in DMG/IEEE 802.11ad frames. Make
copy_supp_rates() immediately return with success if hardware mode is
IEEE 802.11ad.
Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
The new BEACON-REQ-TX-STATUS control interface event is now used to
report whether a beacon request (from REQ_BEACON command) was delivered
successfully. This event has the following parameters: <STA address>
<dialog token> <ack=0/1>.
Signed-off-by: Jouni Malinen <j@w1.fi>
It is apparently possible for the NL80211_CMD_UNEXPECTED_4ADDR_FRAME
event to be delivered to hostapd before the NL80211_CMD_FRAME_TX_STATUS
event for (Re)Association Response frame. This resulted in the 4-address
WDS mode not getting enabled for a STA. This could occur in particular
when operating under heavy load and the STA is reconnecting to the same
AP in a sequence where Deauthentication frame is followed immediately by
Authentication frame and the driver event processing gets delayed due to
removal of the previous netdev taking time in the middle of this
sequence.
Fix this by recording a pending item for 4-address WDS enabling if the
NL80211_CMD_UNEXPECTED_4ADDR_FRAME event would have been dropped due to
incompleted association and then process this pending item if the TX
status for the (Re)Association Response frame is received and it shows
that the frame was acknowledged.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Data connection was lost if a station reassociated without the STA entry
being cleaned up on the AP side. Fix this by moving reconfiguration of
the STA WDS parameters in association response callback to happen only
after the STA flags have been updated to associated stated.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This fixes a regression from commit
bb598c3bdd ('AP: Add support for full
station state'). That commit added code to remove and re-add the kernel
STA entry when processing Authentication frames with a driver that
advertises support for full AP client state. That resulted in bypassing
PMF protections for unprotected Authentication frames with such drivers
since the TK was lost in this operation.
It is simplest to skip the STA entry clearing in this type of case
completely to leave the TK in place and to process the new
authentication exchange otherwise normally. This matches the behavior
used with the drivers that do not implement full AP client state.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Previously, CONFIG_IEEE80211R enabled build that supports FT for both
station mode and AP mode. However, in most wpa_supplicant cases only
station mode FT is required and there is no need for AP mode FT.
Add support to differentiate between station mode FT and AP mode FT in
wpa_supplicant builds by adding CONFIG_IEEE80211R_AP that should be used
when AP mode FT support is required in addition to station mode FT. This
allows binary size to be reduced for builds that require only the
station side FT functionality.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Add signal level information to the station tracking information. Also
make it available via the "TRACK_STA_LIST" control command.
Signed-off-by: Kevin Mahoney <k.mahoney@cablelabs.com>
This implements processing of FILS Authentication frame for FILS shared
key authentication with ERP and PMKSA caching.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Implement the signature mechanism described in the paper
"Passive Taxonomy of Wifi Clients using MLME Frame Contents"
published by Denton Gentry and Avery Pennarun.
http://research.google.com/pubs/pub45429.htmlhttps://arxiv.org/abs/1608.01725
This involves:
1. Add a CONFIG_TAXONOMY compile option. Enabling taxonomy incurs
a memory overhead of up to several kilobytes per associated
station.
2. If enabled, store the Probe Request and (Re)Associate Request frame in
struct sta_info.
3. Implement code to extract the ID of each Information Element,
plus selected fields and bitmasks from certain IEs, into a
descriptive text string. This is done in a new source file,
src/ap/taxonomy.c.
4. Implement a "signature qq:rr:ss:tt:uu:vv" command
in hostapd_cli to retrieve the signature.
Signatures take the form of a text string. For example, a signature
for the Nexus 5X is:
wifi4|probe:0,1,127,45,191,htcap:01ef,htagg:03,htmcs:0000ffff,vhtcap:338061b2,
vhtrxmcs:030cfffa,vhttxmcs:030cfffa,extcap:00000a0201000040|assoc:0,1,48,45,
221(0050f2,2),191,127,htcap:01ef,htagg:03,htmcs:0000ffff,vhtcap:339071b2,
vhtrxmcs:030cfffa,vhttxmcs:030cfffa,extcap:0000000000000040
Signed-off-by: dgentry@google.com (Denton Gentry)
Signed-off-by: denny@geekhold.com (Denton Gentry)
Signed-off-by: rofrankel@google.com (Richard Frankel)
Signed-off-by: richard@frankel.tv (Richard Frankel)
Some deployed stations incorrectly consider nsts capability in
(Re)Association Response frame as required capability instead of maximum
capability and if it is greater than station's capability then beamform
will not happen in uplink traffic.
This commit adds support for an optional workaround to use station's
nsts capability in (Re)Association Response frame if the station's nsts
is less than AP by using the use_sta_nsts=1 configuration parameter.
This configuration is introduced in this commit and it is disabled by
default.
Signed-off-by: Tamizh chelvam <c_traja@qti.qualcomm.com>
Various checks should use is_multicast_ether_addr() instead
of hardcoding the equivalent, change it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There's no need to have a separate variable and open-code a more
complicated version of this, just use is_broadcast_ether_addr().
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This allows the simplest case of SAE group negotiation to occur by
selecting the next available group if the peer STA indicates the
previous one was not supported. This is not yet sufficient to cover all
cases, e.g., when both STAs need to change their groups, but at least
some cases are no covered.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This new parameter allows hostapd to add Vendor Specific elements into
(Re)Association Response frames similarly to the way vendor_elements
parameter can be used for Beacon and Probe Response frames.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Save RM enabled capability element of an associating station if radio
measurement is supported in its capability field.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Process Neighbor Report Request frame and send Neighbor Report Response
frame based on the configured neighbor report data.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Extend the radio_measurements parameter to save all the supported
RRM capabilities as it's used in RM enabled capabilities element.
Make this parameter not directly configurable via config file (though,
keep the radio_measurements parameter for some time for backwards
compatibility). Instead, add a configuration option to enable neighbor
report via radio measurements. Other features can be added later as
well.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
The hostapd "POLL_STA <addr>" control interface command can be used to
check whether an associated station ACKs a QoS Data frame. The received
ACK for such a frame is reported as an event message ("AP-STA-POLL-OK
<addr>").
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
If a legacy client with no P2P PS support is trying to connect to
a P2P GO, the driver should know that, and change its PS behavior
accordingly.
Add a parameter to hostapd_sta_add_params() indicating if P2P PS is
supported by the station and pass this parameter to kernel with nl80211
driver when the station is added/set.
Signed-off-by: Ayala Beker <ayala.beker@intel.com>
This patch add functionality of mesh SAE PMKSA caching. If the local STA
already has peer's PMKSA entry in the cache, skip SAE authentication and
start AMPE with the cached value.
If the peer does not support PMKSA caching or does not have the local
STA's PMKSA entry in the cache, AMPE will fail and the PMKSA cache entry
of the peer will be removed. Then STA retries with ordinary SAE
authentication.
If the peer does not support PMKSA caching and the local STA uses
no_auto_peer=1, the local STA can not retry SAE authentication because
NEW_PEER_CANDIDATE event cannot start SAE authentication when
no_auto_peer=1. So this patch extends MESH_PEER_ADD command to use
duration(sec). Throughout the duration, the local STA can start SAE
authentication triggered by NEW_PEER_CANDIDATE even though
no_auto_peer=1.
This commit requires commit 70c93963ed
('SAE: Fix PMKID calculation for PMKSA cache'). Without that commit,
chosen PMK comparison will fail.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
There is a race condition in which AP might receive the EAPOL-Start
frame (from the just-associated station) before the TX completion of the
Association Response frame. This in turn will cause the EAPOL-Start
frame to get dropped, and potentially failing the connection.
Solve this by saving EAPOL frames from authenticated-but-not-associated
stations, and handling them during the Association Response frame TX
completion processing.
Signed-off-by: Eliad Peller <eliad@wizery.com>
This makes hostapd track Supported Operating Classes information from
the associated STAs. The stored information is available through the STA
control interface command (supp_op_classes row) as a hexdump of the
Supported Operating Classes element starting from the Length field. This
information can be used as input to BSS transition management and
channel switching decisions.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Inside management frame TX status callback, print the TX result where it
was missing. This is useful for debugging management frame drops.
Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
If WPA2 and MBO are enabled, PMF needs to be enabled in hostapd
configuration. If PMF is optional in the configuration, an MBO STA is
required to negotiate use of PMF.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This makes hostapd parse the MBO attribute in (Re)Association Request
frame and track the cellular data capability (mbo_cell_capa=<val> in STA
control interface command).
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Add MBO IE with AP capability attribute to Beacon, Probe Response, and
(Re)Association Response frames to indicate the AP supports MBO.
Add option to add Association Disallowed attribute to Beacon, Probe
Response, and (Re)Association Response frames. Usage:
SET mbo_assoc_disallow <reason code>
Valid reason code values are between 1-5. Setting the reason code to
0 will remove the Association Disallowed attribute from the MBO IE
and will allow new associations.
MBO functionality is enabled by setting "mbo=1" in the config file.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Previously, stations were added to the driver only after the
(Re)Association Response frame was acked. In the time period between the
station has acked the (Re)Association Response frame and the time the
station was added to the kernel, the station can already start sending
Data frames, which will be dropped by the hardware/driver. In addition
to the data loss, the driver may ignore NDPs with PM bit set from this
STA.
Fix this by setting/adding the STA with associated flag set to the
driver before the AP sends the (Re)Association Response frame with
status success. If the (Re)Association Response frame wasn't acked,
remove the station from the driver.
Note that setting a station to associated state before the non-AP
station acknowledges the (Re)Association Response frame is not compliant
with the IEEE 802.11 standard that specifically states that a non-AP
station should transition to authenticated/associated state only after
it acknowledged the (Re)Association Response frame. However, this is a
justifiable simplification to work around the issue described above since
1. The station will be removed in case it does not acknowledge the
(Re)Association Response frame.
2. All Data frames would be dropped until the station is set to
authorized state and there are no known issues with processing the
other Class 3 frames during the short window before the
acknowledgement is seen.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Add support for drivers that support full AP client state, i.e., can
handle adding stations that are not associated yet. For such drivers,
add a station after processing the authentication request, instead of
adding it in the association response callback.
Doing so is beneficial in cases where the driver cannot handle the add
station request, in which case it is useless to perform the complete
connection establishment.
Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Do not use the system clock or os_random() that uses a low quality PRNG
as part of the pseudo-random challenge in auth_shared_key(). The
construction can be improved upon by replacing it with a call to
os_get_random(), which uses a high quality PRNG.
Signed-off-by: Nick Lowe <nick.lowe@lugatech.com>
Previously, only mesh Action frames from BLOCKED STA were dropped.
Extend that to drop Authentication frames as well.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
The SAE PMKID is calculated with IEEE Std 802.11-2012 11.3.5.4, but the
PMKID was re-calculated with 11.6.1.3 and saved into PMKSA cache. Fix
this to save the PMKID calculated with 11.3.5.4 into the PMKSA cache.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
This allows the stations to be assigned to their own vif. It does not
need dynamic_vlan to be set. Make hostapd call ap_sta_set_vlan even if
!vlan_desc.notempty, so vlan_id can be assigned regardless.
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
1. Add tagged VLAN to struct vlan_description
(compile limited number of tagged VLANs per description)
For k tagged VLANs, the first k entries in vlan_description.tagged
are used. They are sorted in ascending order. All other entries are
zero. This way os_memcmp() can find identical configurations.
2. Let tagged VLANs be parsed from RADIUS Access-Accept
3. Print VLAN %d+ with %d=untagged VID if tagged VLANs are set
4. Select an unused vlan_id > 4096 for new tagged VLAN configurations
5. Add EGRESS_VLAN RADIUS attribute parsing also for untagged VLANs
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
Separate uplink configuration (IEEE 802.1q VID) and grouping of stations
into AP_VLAN interfaces.
The int vlan_id will continue to identify the AP_VLAN interface the
station should be assigned to. Each AP_VLAN interface corresponds to an
instance of struct hostapd_vlan that is uniquely identified by int
vlan_id within an BSS.
New: Each station and struct hostapd_vlan holds a struct
vlan_description vlan_desc member that describes the uplink
configuration requested. Currently this is just an int untagged IEEE
802.1q VID, but can be extended to tagged VLANs and other settings
easily.
When the station was about to be assigned its vlan_id, vlan_desc and
vlan_id will now be set simultaneously by ap_sta_set_vlan(). So
sta->vlan_id can still be tested for whether the station needs to be
moved to an AP_VLAN interface.
To ease addition of tagged VLAN support, a member notempty is added to
struct vlan_description. Is is set to 1 if an untagged or tagged VLAN
assignment is requested and needs to be validated. The inverted form
allows os_zalloc() to initialize an empty description.
Though not depended on by the code, vlan_id assignment ensures:
* vlan_id = 0 will continue to mean no AP_VLAN interface
* vlan_id < 4096 will continue to mean vlan_id = untagged vlan id
with no per_sta_vif and no extra tagged vlan.
* vlan_id > 4096 will be used for per_sta_vif and/or tagged vlans.
This way struct wpa_group and drivers API do not need to be changed in
order to implement tagged VLANs or per_sta_vif support.
DYNAMIC_VLAN_* will refer to (struct vlan_description).notempty only,
thus grouping of the stations for per_sta_vif can be used with
DYNAMIC_VLAN_DISABLED, but not with CONFIG_NO_VLAN, as struct
hostapd_vlan is still used to manage AP_VLAN interfaces.
MAX_VLAN_ID will be checked in hostapd_vlan_valid and during setup of
VLAN interfaces and refer to IEEE 802.1q VID. VLAN_ID_WILDCARD will
continue to refer to int vlan_id.
Renaming vlan_id to vlan_desc when type changed from int to struct
vlan_description was avoided when vlan_id was also used in a way that
did not depend on its type (for example, when passed to another
function).
Output of "VLAN ID %d" continues to refer to int vlan_id, while "VLAN
%d" will refer to untagged IEEE 802.1q VID.
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
If P2P support is included in wpa_supplicant build (CONFIG_P2P=y), but
P2P functionality is explicitly disabled (e.g., "P2P_SET disabled 1"),
couple of AP management frame processing steps did not check against
hapd->p2p_group being NULL and could end up dereferencing a NULL pointer
if a Probe Request frame or (Re)Association Request frame was received
with a P2P IE in it. Fix this by skipping these steps if hapd->p2p_group
is NULL.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes it somewhat easier for the station to be able to receive and
process the encrypted WNM-Notification frames that the AP previously
sentt immediately after receiving EAPOL-Key msg 4/4. While the station
is supposed to have the TK configured for receive before sending out
EAPOL-Key msg 4/4, not many actual implementations do that. As such,
there is a race condition in being able to configure the key at the
station and the AP sending out the first encrypted frame after EAPOL-Key
4/4. The extra 100 ms time here makes it more likely for the station to
have managed to configure the key in time.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
IEEE Std 802.11-2012 13.3.1 states that the AID should be generated on
the local node for each peer. Previously, we were using the peer link ID
(generated by the peer) which may not be unique among all peers. Correct
this by reusing the AP AID generation code.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Add new GO frequency move policy. The P2P_GO_FREQ_MOVE_SCM_ECSA prefers
SCM if all the clients advertise eCSA support and the candidate
frequency is one of the group common frequencies.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Previously, station's VHT information elements were copied and passed
regardless of the AP's VHT configuration. As a result, AP with VHT
disabled in configuration could have ended up transmitting packets in
VHT rates though AP is not advertising VHT support. Fix this by copying
the station's VHT capabilities only when AP supports VHT (both hardware
and configuration).
Signed-off-by: Ashok Raj Nagarajan <arnagara@qti.qualcomm.com>
This extends the previous tracking design to add a station entry based
on other management frames than Probe Request frames. For example, this
covers a case where the station is using passive scanning.
Signed-off-by: Jouni Malinen <j@w1.fi>
The new no_auth_if_seen_on=<ifname> parameter can now be used to
configure hostapd to reject authentication from a station that was seen
on another radio.
This can be used with enabled track_sta_max_num configuration on another
interface controlled by the same hostapd process to reject
authentication attempts from a station that has been detected to be
capable of operating on another band, e.g., to try to reduce likelihood
of the station selecting a 2.4 GHz BSS when the AP operates both a 2.4
GHz and 5 GHz BSS concurrently.
Note: Enabling this can cause connectivity issues and increase latency for
connecting with the AP.
Signed-off-by: Jouni Malinen <j@w1.fi>
The mesh SAE auth often fails with master branch. By bisect I found
commit eb5fee0bf5 ('SAE: Add side-channel
protection to PWE derivation with ECC') causes this issue. This does not
mean the commit has a bug. This is just a CPU resource issue.
After the commit, sae_derive_pwe_ecc() spends 101(msec) on my PC (Intel
Atom N270 1.6GHz). But dot11RSNASAERetransPeriod is 40(msec). So
auth_sae_retransmit_timer() is always called and it can causes
continuous frame exchanges. Before the commit, it was 23(msec).
On the IEEE 802.11 spec, the default value of dot11RSNASAERetransPeriod
is defined as 40(msec). But it looks short because generally mesh
functionality will be used on low spec devices. Indeed Raspberry Pi B+
(ARM ARM1176JZF-S 700MHz) requires 287(msec) for new
sae_derive_pwe_ecc().
So this patch makes the default to 1000(msec) and makes it configurable.
This issue does not occur on infrastructure SAE because the
dot11RSNASAERetransPeriod is not used on it.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
The new CONFIG_NO_RC4=y build option can be used to remove all internal
hostapd and wpa_supplicant uses of RC4. It should be noted that external
uses (e.g., within a TLS library) do not get disabled when doing this.
This removes capability of supporting WPA/TKIP, dynamic WEP keys with
IEEE 802.1X, WEP shared key authentication, and MSCHAPv2 password
changes.
Signed-off-by: Jouni Malinen <j@w1.fi>
This adds the FST IEs received from the FST module into Beacon, Probe
Response, and (Re)Association Response frames.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This check explicitly for reflection attack and stops authentication
immediately if that is detected instead of continuing to the following
4-way handshake that would fail due to the attacker not knowing the key
from the SAE exchange.
Signed-off-by: Jouni Malinen <j@w1.fi>
In theory, the previous version could have resulted in reading one byte
beyond the end of the management frame RX buffer if the local driver
were to deliver a truncated Public Action frame for processing. In
practice, this did not seem to happen with mac80211-based drivers and
even if it were, the extra octet would be an uninitialized value in a
buffer rather than read beyond the end of the buffer.
Signed-off-by: Jouni Malinen <j@w1.fi>
Previously, mesh state machine transmits updated Commit Message when
receiving a Confirm Message in Committed state. According to the
standard, it should (re)send the latest Commit Message previously sent.
IEEE Std 802.11-2012, 11.3.8.6.4 Protocol instance behavior - Committed
state:
"Upon receipt of a Con event, ... If Sync is not greater than
dot11RSNASAESync, the protocol instance shall increment Sync, transmit
the last Commit Message sent to the peer, and set the t0
(retransmission) timer."
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
Check the element length in the parser and remove the length field from
struct ieee802_11_elems since the element is of fixed length.
Signed-off-by: Jouni Malinen <j@w1.fi>
