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RSN+WPA: Fix RSNE removing in EAPOL-Key msg 3/4 when RSNXE is included

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When the AP advertised RSNE, RSNXE, and WPA IE, hostapd incorrectly
removed the RSNE in the EAPOL-Key msg 3/4 if the STA associates with
WPA, leaving only RSNXE instead of WPA IE. WPA STA fails to connect to
such AP as the WPA IE is missing.

Since RSNXE is not really used in non-RSN connection, just remove it
here with RSNE.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
This commit is contained in:
Andrei Otcheretianski 2021-01-21 17:40:33 +02:00 committed by Jouni Malinen
parent dc19779592
commit fa859ebb19
1 changed files with 4 additions and 0 deletions
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4
src/ap/wpa_auth.c
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@ -3393,6 +3393,8 @@ SM_STATE(WPA_PTK, PTKINITNEGOTIATING)
wpa_ie_len > wpa_ie[1] + 2U && wpa_ie[0] == WLAN_EID_RSN) {
/* WPA-only STA, remove RSN IE and possible MDIE */
wpa_ie = wpa_ie + wpa_ie[1] + 2;
if (wpa_ie[0] == WLAN_EID_RSNX)
wpa_ie = wpa_ie + wpa_ie[1] + 2;
if (wpa_ie[0] == WLAN_EID_MOBILITY_DOMAIN)
wpa_ie = wpa_ie + wpa_ie[1] + 2;
wpa_ie_len = wpa_ie[1] + 2;
@ -5397,6 +5399,8 @@ int wpa_auth_resend_m3(struct wpa_state_machine *sm,
wpa_ie_len > wpa_ie[1] + 2 && wpa_ie[0] == WLAN_EID_RSN) {
/* WPA-only STA, remove RSN IE and possible MDIE */
wpa_ie = wpa_ie + wpa_ie[1] + 2;
if (wpa_ie[0] == WLAN_EID_RSNX)
wpa_ie = wpa_ie + wpa_ie[1] + 2;
if (wpa_ie[0] == WLAN_EID_MOBILITY_DOMAIN)
wpa_ie = wpa_ie + wpa_ie[1] + 2;
wpa_ie_len = wpa_ie[1] + 2;