RSN: Do not try to connect if PMF disabled and AP requires it

Instead of trying to associate in configuration that is known to result
in the AP rejecting the association, reject the BSS candidate based on
the MFPR=1 RSN capability when STA configuration has PMF disabled.

Signed-off-by: Jouni Malinen <j@w1.fi>

diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index ea1f142..aab752c 100644 (file)
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -564,6 +564,13 @@ static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
                        break;
                }
 #endif /* CONFIG_IEEE80211W */
+               if ((ie.capabilities & WPA_CAPABILITY_MFPR) &&
+                   wpas_get_ssid_pmf(wpa_s, ssid) ==
+                   NO_MGMT_FRAME_PROTECTION) {
+                       wpa_dbg(wpa_s, MSG_DEBUG,
+                               "   skip RSN IE - no mgmt frame protection enabled but AP requires it");
+                       break;
+               }
 
                wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
                return 1;