Wireless access point daemon, patched with ubus support
33179cd291
In associations using PMF (IEEE 802.11w/MFP), the infrastructure implements SA teardown protection by rejecting an (Re)Association Request frame from an already-associated client. The AP responds with error 30 (Association request rejected temporarily) to instruct the (potentially spoofing) client to back off, while it issues an SA Query procedure to the already-associated client. If the client can respond to it within the back-off period, it considers the new association to be a spoof attempt. However, there are cases where a legitimate client might need to handle this error response - consider if the STA has deauthenticated, but the AP cannot hear it (out of range). If the MFP STA has deleted its keys, it cannot respond to the SA Query procedure. This association comeback process has commonly been implemented in the driver, e.g., within mac80211 in case of the Linux drivers that use SME in userspace. However, there are drivers that do not implement this functionality. Extended wpa_supplicant to cover such cases as well. The current implementation interprets this association error as a true error, and will either add the BSS to the list of ignored BSSIDs, or continue to try other BSSes. This can cause wpa_supplicant to back off trying to reconnect for progressively longer intervals, depending on the infrastructure's configured comeback timeout. Allow wpa_supplicant to interpret the error, searching for the Timeout Interval element in the (Re)Association Response frame and starting a timer in the SME layer to re-associate after the timeout. This can be a long delay (1-4 seconds in my experience), but it is likely much shorter than bouncing between nearby BSSes. This does not change behavior for drivers that implement association comeback timer internally since they do not report the temporary association rejection status code to user space. Signed-off-by: Harry Bock <hbock@zebra.com> |
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| doc | ||
| eap_example | ||
| hostapd | ||
| hs20 | ||
| radius_example | ||
| src | ||
| tests | ||
| wlantest | ||
| wpa_supplicant | ||
| wpadebug | ||
| wpaspy | ||
| .gitignore | ||
| Android.mk | ||
| build_release | ||
| CONTRIBUTIONS | ||
| COPYING | ||
| README | ||
wpa_supplicant and hostapd -------------------------- Copyright (c) 2002-2022, Jouni Malinen <j@w1.fi> and contributors All Rights Reserved. These programs are licensed under the BSD license (the one with advertisement clause removed). If you are submitting changes to the project, please see CONTRIBUTIONS file for more instructions. This package may include either wpa_supplicant, hostapd, or both. See README file respective subdirectories (wpa_supplicant/README or hostapd/README) for more details. Source code files were moved around in v0.6.x releases and compared to earlier releases, the programs are now built by first going to a subdirectory (wpa_supplicant or hostapd) and creating build configuration (.config) and running 'make' there (for Linux/BSD/cygwin builds). License ------- This software may be distributed, used, and modified under the terms of BSD license: Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name(s) of the above-listed copyright holder(s) nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.