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Fix CVE-2014-3470

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Check session_cert is not NULL before dereferencing it.
(cherry picked from commit 8011cd56e39a433b1837465259a9bd24a38727fb)
This commit is contained in:
Dr. Stephen Henson 2014-05-29 15:00:05 +01:00
parent a5d03c54ab
commit e5f706590c
1 changed files with 7 additions and 0 deletions
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7
ssl/s3_clnt.c
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@ -2689,6 +2689,13 @@ int ssl3_send_client_key_exchange(SSL *s)
int ecdh_clnt_cert = 0; int ecdh_clnt_cert = 0;
int field_size = 0; int field_size = 0;
if (s->session->sess_cert == NULL)
{
ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
goto err;
}
/* Did we send out the client's /* Did we send out the client's
* ECDH share for use in premaster * ECDH share for use in premaster
* computation as part of client certificate? * computation as part of client certificate?