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Process Transition Disable KDE in station mode

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Check whether the Transition Disable KDE is received from an
authenticated AP and if so, whether it contains valid indication for
disabling a transition mode. If that is the case, update the local
network profile by removing the less secure options.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2020-03-26 00:10:16 +02:00 • committed by Jouni Malinen
parent 82cc0b0cc2
commit 9d1857cf35
7 changed files with 95 additions and 0 deletions
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5
src/rsn_supp/wpa.c
View file

@ -1771,6 +1771,8 @@ static void wpa_supplicant_process_3_of_4(struct wpa_sm *sm,
sm->cur_pmksa = sa;
}
if (ie.transition_disable)
wpa_sm_transition_disable(sm, ie.transition_disable[0]);
sm->msg_3_of_4_ok = 1;
return;
@ -4809,6 +4811,9 @@ int fils_process_assoc_resp(struct wpa_sm *sm, const u8 *resp, size_t len)
sm->fils_completed = 1;
forced_memzero(&gd, sizeof(gd));
if (kde.transition_disable)
wpa_sm_transition_disable(sm, kde.transition_disable[0]);
return 0;
fail:
forced_memzero(&gd, sizeof(gd));

1
src/rsn_supp/wpa.h
View file

@ -85,6 +85,7 @@ struct wpa_sm_ctx {
void (*fils_hlp_rx)(void *ctx, const u8 *dst, const u8 *src,
const u8 *pkt, size_t pkt_len);
int (*channel_info)(void *ctx, struct wpa_channel_info *ci);
void (*transition_disable)(void *ctx, u8 bitmap);
};

6
src/rsn_supp/wpa_i.h
View file

@ -426,6 +426,12 @@ static inline int wpa_sm_channel_info(struct wpa_sm *sm,
return sm->ctx->channel_info(sm->ctx->ctx, ci);
}
static inline void wpa_sm_transition_disable(struct wpa_sm *sm, u8 bitmap)
{
if (sm->ctx->transition_disable)
sm->ctx->transition_disable(sm->ctx->ctx, bitmap);
}
int wpa_eapol_key_send(struct wpa_sm *sm, struct wpa_ptk *ptk,
int ver, const u8 *dest, u16 proto,