diff options
Diffstat (limited to 'gnu/packages/patches/wpa-supplicant-fix-nonce-reuse.patch')
| -rw-r--r-- | gnu/packages/patches/wpa-supplicant-fix-nonce-reuse.patch | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/gnu/packages/patches/wpa-supplicant-fix-nonce-reuse.patch b/gnu/packages/patches/wpa-supplicant-fix-nonce-reuse.patch deleted file mode 100644 index d8dd9cd204..0000000000 --- a/gnu/packages/patches/wpa-supplicant-fix-nonce-reuse.patch +++ /dev/null @@ -1,72 +0,0 @@ -Fix a nonce re-use bug: - -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-v2.6-0005-Fix-PTK-rekeying-to-generate-a-new-ANonce.patch - -From 12fac09b437a1dc8a0f253e265934a8aaf4d2f8b Mon Sep 17 00:00:00 2001 -From: Jouni Malinen <j@w1.fi> -Date: Sun, 1 Oct 2017 12:32:57 +0300 -Subject: [PATCH 5/8] Fix PTK rekeying to generate a new ANonce - -The Authenticator state machine path for PTK rekeying ended up bypassing -the AUTHENTICATION2 state where a new ANonce is generated when going -directly to the PTKSTART state since there is no need to try to -determine the PMK again in such a case. This is far from ideal since the -new PTK would depend on a new nonce only from the supplicant. - -Fix this by generating a new ANonce when moving to the PTKSTART state -for the purpose of starting new 4-way handshake to rekey PTK. - -Signed-off-by: Jouni Malinen <j@w1.fi> ---- - src/ap/wpa_auth.c | 24 +++++++++++++++++++++--- - 1 file changed, 21 insertions(+), 3 deletions(-) - -diff --git a/src/ap/wpa_auth.c b/src/ap/wpa_auth.c -index 707971d..bf10cc1 100644 ---- a/src/ap/wpa_auth.c -+++ b/src/ap/wpa_auth.c -@@ -1901,6 +1901,21 @@ SM_STATE(WPA_PTK, AUTHENTICATION2) - } - - -+static int wpa_auth_sm_ptk_update(struct wpa_state_machine *sm) -+{ -+ if (random_get_bytes(sm->ANonce, WPA_NONCE_LEN)) { -+ wpa_printf(MSG_ERROR, -+ "WPA: Failed to get random data for ANonce"); -+ sm->Disconnect = TRUE; -+ return -1; -+ } -+ wpa_hexdump(MSG_DEBUG, "WPA: Assign new ANonce", sm->ANonce, -+ WPA_NONCE_LEN); -+ sm->TimeoutCtr = 0; -+ return 0; -+} -+ -+ - SM_STATE(WPA_PTK, INITPMK) - { - u8 msk[2 * PMK_LEN]; -@@ -2458,9 +2473,12 @@ SM_STEP(WPA_PTK) - SM_ENTER(WPA_PTK, AUTHENTICATION); - else if (sm->ReAuthenticationRequest) - SM_ENTER(WPA_PTK, AUTHENTICATION2); -- else if (sm->PTKRequest) -- SM_ENTER(WPA_PTK, PTKSTART); -- else switch (sm->wpa_ptk_state) { -+ else if (sm->PTKRequest) { -+ if (wpa_auth_sm_ptk_update(sm) < 0) -+ SM_ENTER(WPA_PTK, DISCONNECTED); -+ else -+ SM_ENTER(WPA_PTK, PTKSTART); -+ } else switch (sm->wpa_ptk_state) { - case WPA_PTK_INITIALIZE: - break; - case WPA_PTK_DISCONNECT: --- -2.7.4 - |