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27 lines
791 B
27 lines
791 B
7 years ago
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commit 4ad43d511f6cf064c66eb4bfd0fb0919b5dd8a86
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Author: Dr. Stephen Henson <steve@openssl.org>
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Date: Thu May 29 15:00:05 2014 +0100
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Fix CVE-2014-3470
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Check session_cert is not NULL before dereferencing it.
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diff --git a/ssl/s3_clnt.c b/ssl/s3_clnt.c
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index d35376d..4324f8d 100644
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--- a/ssl/s3_clnt.c
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+++ b/ssl/s3_clnt.c
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@@ -2511,6 +2511,13 @@ int ssl3_send_client_key_exchange(SSL *s)
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int ecdh_clnt_cert = 0;
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int field_size = 0;
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+ if (s->session->sess_cert == NULL)
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+ {
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+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
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+ SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
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+ goto err;
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+ }
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+
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/* Did we send out the client's
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* ECDH share for use in premaster
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* computation as part of client certificate?
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