mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-12-30 16:12:58 -05:00
09748a3527
Fixes CVE-2017-{13078,13079,13080,13081,13082,13087,13088}.
See these announcements for more information:
https://w1.fi/security/2017-1/wpa-packet-number-reuse-with-replayed-messages.txt
https://www.krackattacks.com/
* gnu/packages/patches/wpa-supplicant-CVE-2017-13082.patch,
gnu/packages/patches/wpa-supplicant-fix-key-reuse.patch,
gnu/packages/patches/wpa-supplicant-fix-nonce-reuse.patch
gnu/packages/patches/wpa-supplicant-fix-zeroed-keys.patch,
gnu/packages/patches/wpa-supplicant-krack-followups.patch: New files.
* gnu/packages/admin.scm (wpa-supplicant-minimal)[source]: Use them.
* gnu/local.mk (dist_patch_DATA): Add them.
86 lines
2.7 KiB
Diff
86 lines
2.7 KiB
Diff
Don't install a zeroed encryption key:
|
|
|
|
https://w1.fi/security/2017-1/wpa-packet-number-reuse-with-replayed-messages.txt
|
|
|
|
Patch copied from upstream:
|
|
https://w1.fi/security/2017-1/rebased-v2.6-0004-Prevent-installation-of-an-all-zero-TK.patch
|
|
|
|
From 8f82bc94e8697a9d47fa8774dfdaaede1084912c Mon Sep 17 00:00:00 2001
|
|
From: Mathy Vanhoef <Mathy.Vanhoef@cs.kuleuven.be>
|
|
Date: Fri, 29 Sep 2017 04:22:51 +0200
|
|
Subject: [PATCH 4/8] Prevent installation of an all-zero TK
|
|
|
|
Properly track whether a PTK has already been installed to the driver
|
|
and the TK part cleared from memory. This prevents an attacker from
|
|
trying to trick the client into installing an all-zero TK.
|
|
|
|
This fixes the earlier fix in commit
|
|
ad00d64e7d8827b3cebd665a0ceb08adabf15e1e ('Fix TK configuration to the
|
|
driver in EAPOL-Key 3/4 retry case') which did not take into account
|
|
possibility of an extra message 1/4 showing up between retries of
|
|
message 3/4.
|
|
|
|
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@cs.kuleuven.be>
|
|
---
|
|
src/common/wpa_common.h | 1 +
|
|
src/rsn_supp/wpa.c | 5 ++---
|
|
src/rsn_supp/wpa_i.h | 1 -
|
|
3 files changed, 3 insertions(+), 4 deletions(-)
|
|
|
|
diff --git a/src/common/wpa_common.h b/src/common/wpa_common.h
|
|
index d200285..1021ccb 100644
|
|
--- a/src/common/wpa_common.h
|
|
+++ b/src/common/wpa_common.h
|
|
@@ -215,6 +215,7 @@ struct wpa_ptk {
|
|
size_t kck_len;
|
|
size_t kek_len;
|
|
size_t tk_len;
|
|
+ int installed; /* 1 if key has already been installed to driver */
|
|
};
|
|
|
|
struct wpa_gtk {
|
|
diff --git a/src/rsn_supp/wpa.c b/src/rsn_supp/wpa.c
|
|
index 7a2c68d..0550a41 100644
|
|
--- a/src/rsn_supp/wpa.c
|
|
+++ b/src/rsn_supp/wpa.c
|
|
@@ -510,7 +510,6 @@ static void wpa_supplicant_process_1_of_4(struct wpa_sm *sm,
|
|
os_memset(buf, 0, sizeof(buf));
|
|
}
|
|
sm->tptk_set = 1;
|
|
- sm->tk_to_set = 1;
|
|
|
|
kde = sm->assoc_wpa_ie;
|
|
kde_len = sm->assoc_wpa_ie_len;
|
|
@@ -615,7 +614,7 @@ static int wpa_supplicant_install_ptk(struct wpa_sm *sm,
|
|
enum wpa_alg alg;
|
|
const u8 *key_rsc;
|
|
|
|
- if (!sm->tk_to_set) {
|
|
+ if (sm->ptk.installed) {
|
|
wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
|
|
"WPA: Do not re-install same PTK to the driver");
|
|
return 0;
|
|
@@ -659,7 +658,7 @@ static int wpa_supplicant_install_ptk(struct wpa_sm *sm,
|
|
|
|
/* TK is not needed anymore in supplicant */
|
|
os_memset(sm->ptk.tk, 0, WPA_TK_MAX_LEN);
|
|
- sm->tk_to_set = 0;
|
|
+ sm->ptk.installed = 1;
|
|
|
|
if (sm->wpa_ptk_rekey) {
|
|
eloop_cancel_timeout(wpa_sm_rekey_ptk, sm, NULL);
|
|
diff --git a/src/rsn_supp/wpa_i.h b/src/rsn_supp/wpa_i.h
|
|
index 9a54631..41f371f 100644
|
|
--- a/src/rsn_supp/wpa_i.h
|
|
+++ b/src/rsn_supp/wpa_i.h
|
|
@@ -24,7 +24,6 @@ struct wpa_sm {
|
|
struct wpa_ptk ptk, tptk;
|
|
int ptk_set, tptk_set;
|
|
unsigned int msg_3_of_4_ok:1;
|
|
- unsigned int tk_to_set:1;
|
|
u8 snonce[WPA_NONCE_LEN];
|
|
u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */
|
|
int renew_snonce;
|
|
--
|
|
2.7.4
|
|
|