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Work around interop issue with WPA type EAPOL-Key 4/4 in WPA2 mode

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Some deployed station implementations seem to send msg 4/4 with
incorrect type value in WPA2 mode. Add a workaround to ignore that issue
so that such stations can interoperate with hostapd authenticator. The
validation checks were added in commit
f8e96eb6fd.

Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2012-01-22 12:23:28 +02:00
parent f9121813d7
commit 74590e710f
1 changed files with 8 additions and 1 deletions
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9
src/ap/wpa_auth.c
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@ -795,7 +795,14 @@ void wpa_receive(struct wpa_authenticator *wpa_auth,
} }
if (sm->wpa == WPA_VERSION_WPA2) { if (sm->wpa == WPA_VERSION_WPA2) {
if (key->type != EAPOL_KEY_TYPE_RSN) { if (key->type == EAPOL_KEY_TYPE_WPA) {
/*
* Some deployed station implementations seem to send
* msg 4/4 with incorrect type value in WPA2 mode.
*/
wpa_printf(MSG_DEBUG, "Workaround: Allow EAPOL-Key "
"with unexpected WPA type in RSN mode");
} else if (key->type != EAPOL_KEY_TYPE_RSN) {
wpa_printf(MSG_DEBUG, "Ignore EAPOL-Key with " wpa_printf(MSG_DEBUG, "Ignore EAPOL-Key with "
"unexpected type %d in RSN mode", "unexpected type %d in RSN mode",
key->type); key->type);