gnutls/fix-CVE-2020-11501-zeroed-random.patch

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2020-04-22 16:00:29 +08:00
From c01011c2d8533dbbbe754e49e256c109cb848d0d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20B=C3=BChler?= <stbuehler@web.de>
Date: Fri, 27 Mar 2020 17:17:57 +0100
Subject: [PATCH] dtls client hello: fix zeroed random (fixes #960)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This broke with bcf4de03 "handshake: treat reply to HRR as a reply to
hello verify request", which failed to "De Morgan" properly.
Signed-off-by: Stefan Bühler <stbuehler@web.de>
---
lib/handshake.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/handshake.c b/lib/handshake.c
index 1e6164c..5c8f33a 100644
--- a/lib/handshake.c
+++ b/lib/handshake.c
@@ -2164,7 +2164,7 @@ static int send_client_hello(gnutls_session_t session, int again)
/* Generate random data
*/
if (!(session->internals.hsk_flags & HSK_HRR_RECEIVED) &&
- !(IS_DTLS(session) && session->internals.dtls.hsk_hello_verify_requests == 0)) {
+ !(IS_DTLS(session) && session->internals.dtls.hsk_hello_verify_requests != 0)) {
ret = _gnutls_gen_client_random(session);
if (ret < 0) {
gnutls_assert();
--
1.8.3.1