Amazing-Mirror/fragattacks
1
0
Fork 0
mirror of https://github.com/vanhoefm/fragattacks.git synced 2025-02-17 17:43:06 -05:00
Code Issues Projects Releases Wiki Activity

FILS: Check FILS Indication element against local network profile

Browse Source 
Do not try to use FILS authentication unless the AP indicates support
for the type the local network profile enforces.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2017-03-12 22:59:52 +02:00
parent 1c243e402b
commit 6498351670
1 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
wpa_supplicant/sme.c
View File

@ -557,6 +557,37 @@ static void sme_send_authentication(struct wpa_supplicant *wpa_s,
* networks). */ * networks). */
if (params.auth_alg == WPA_AUTH_ALG_OPEN && if (params.auth_alg == WPA_AUTH_ALG_OPEN &&
wpa_key_mgmt_fils(ssid->key_mgmt)) { wpa_key_mgmt_fils(ssid->key_mgmt)) {
const u8 *indic;
u16 fils_info;
/*
* Check FILS Indication element (FILS Information field) bits
* indicating supported authentication algorithms against local
* configuration (ssid->fils_dh_group). Try to use FILS
* authentication only if the AP supports the combination in the
* network profile. */
indic = wpa_bss_get_ie(bss, WLAN_EID_FILS_INDICATION);
if (!indic || indic[1] < 2) {
wpa_printf(MSG_DEBUG, "SME: " MACSTR
" does not include FILS Indication element - cannot use FILS authentication with it",
MAC2STR(bss->bssid));
goto no_fils;
}
fils_info = WPA_GET_LE16(indic + 2);
if (ssid->fils_dh_group == 0 && !(fils_info & BIT(9))) {
wpa_printf(MSG_DEBUG, "SME: " MACSTR
" does not support FILS SK without PFS - cannot use FILS authentication with it",
MAC2STR(bss->bssid));
goto no_fils;
}
if (ssid->fils_dh_group != 0 && !(fils_info & BIT(10))) {
wpa_printf(MSG_DEBUG, "SME: " MACSTR
" does not support FILS SK with PFS - cannot use FILS authentication with it",
MAC2STR(bss->bssid));
goto no_fils;
}
if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
ssid, 0, ssid, 0,
wpa_bss_get_fils_cache_id(bss)) == wpa_bss_get_fils_cache_id(bss)) ==
@ -582,6 +613,7 @@ static void sme_send_authentication(struct wpa_supplicant *wpa_s,
wpa_s->sme.auth_alg = auth_alg; wpa_s->sme.auth_alg = auth_alg;
} }
} }
no_fils:
#endif /* CONFIG_FILS */ #endif /* CONFIG_FILS */
wpa_supplicant_cancel_sched_scan(wpa_s); wpa_supplicant_cancel_sched_scan(wpa_s);