Commit 80bd7b41 authored by Dr. Stephen Henson's avatar Dr. Stephen Henson Committed by Matt Caswell
Browse files

Fix SRP ciphersuite DoS vulnerability. 



If a client attempted to use an SRP ciphersuite and it had not been
set up correctly it would crash with a null pointer read. A malicious
server could exploit this in a DoS attack.

Thanks to Joonas Kuorilehto and Riku Hietamäki from Codenomicon
for reporting this issue.

CVE-2014-2970
Reviewed-by: default avatarTim Hudson <tjh@openssl.org>
parent fb0bc2b2

ssl/t1_lib.c

+7 −0
Original line number Diff line number Diff line
@@ -1088,6 +1088,13 @@ void ssl_set_client_disabled(SSL *s) 
		c->mask_k |= SSL_kPSK;

		}

#endif /* OPENSSL_NO_PSK */

#ifndef OPENSSL_NO_SRP

	if (!(s->srp_ctx.srp_Mask & SSL_kSRP))

		{

		c->mask_a |= SSL_aSRP;

		c->mask_k |= SSL_kSRP;

		}

#endif

	c->valid = 1;

	}