diff options
Diffstat (limited to 'net-wireless/wpa_supplicant/files/rebased-v2.6-0001-WPA-Ignore-unauthenticated-encrypted-EAPOL-Key-data.patch')
| -rw-r--r-- | net-wireless/wpa_supplicant/files/rebased-v2.6-0001-WPA-Ignore-unauthenticated-encrypted-EAPOL-Key-data.patch | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/net-wireless/wpa_supplicant/files/rebased-v2.6-0001-WPA-Ignore-unauthenticated-encrypted-EAPOL-Key-data.patch b/net-wireless/wpa_supplicant/files/rebased-v2.6-0001-WPA-Ignore-unauthenticated-encrypted-EAPOL-Key-data.patch deleted file mode 100644 index a62b52c6b9a8..000000000000 --- a/net-wireless/wpa_supplicant/files/rebased-v2.6-0001-WPA-Ignore-unauthenticated-encrypted-EAPOL-Key-data.patch +++ /dev/null @@ -1,44 +0,0 @@ -From 3e34cfdff6b192fe337c6fb3f487f73e96582961 Mon Sep 17 00:00:00 2001 -From: Mathy Vanhoef <Mathy.Vanhoef@cs.kuleuven.be> -Date: Sun, 15 Jul 2018 01:25:53 +0200 -Subject: [PATCH] WPA: Ignore unauthenticated encrypted EAPOL-Key data - -Ignore unauthenticated encrypted EAPOL-Key data in supplicant -processing. When using WPA2, these are frames that have the Encrypted -flag set, but not the MIC flag. - -When using WPA2, EAPOL-Key frames that had the Encrypted flag set but -not the MIC flag, had their data field decrypted without first verifying -the MIC. In case the data field was encrypted using RC4 (i.e., when -negotiating TKIP as the pairwise cipher), this meant that -unauthenticated but decrypted data would then be processed. An adversary -could abuse this as a decryption oracle to recover sensitive information -in the data field of EAPOL-Key messages (e.g., the group key). -(CVE-2018-14526) - -Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@cs.kuleuven.be> ---- - src/rsn_supp/wpa.c | 11 +++++++++++ - 1 file changed, 11 insertions(+) - -diff -upr wpa_supplicant-2.6.orig/src/rsn_supp/wpa.c wpa_supplicant-2.6/src/rsn_supp/wpa.c ---- wpa_supplicant-2.6.orig/src/rsn_supp/wpa.c 2016-10-02 21:51:11.000000000 +0300 -+++ wpa_supplicant-2.6/src/rsn_supp/wpa.c 2018-08-08 16:55:11.506831029 +0300 -@@ -2016,6 +2016,17 @@ int wpa_sm_rx_eapol(struct wpa_sm *sm, c - - if ((sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN) && - (key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) { -+ /* -+ * Only decrypt the Key Data field if the frame's authenticity -+ * was verified. When using AES-SIV (FILS), the MIC flag is not -+ * set, so this check should only be performed if mic_len != 0 -+ * which is the case in this code branch. -+ */ -+ if (!(key_info & WPA_KEY_INFO_MIC)) { -+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, -+ "WPA: Ignore EAPOL-Key with encrypted but unauthenticated data"); -+ goto out; -+ } - if (wpa_supplicant_decrypt_key_data(sm, key, ver, key_data, - &key_data_len)) - goto out; |