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Additional CVE-2014-0224 protection.

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Return a fatal error if an attempt is made to use a zero length
master secret.
(cherry picked from commit 006cd7083f)
This commit is contained in:
Dr. Stephen Henson 2014-05-16 12:55:16 +01:00
parent b4322e1de8
commit a7c682fb6f
1 changed files with 1 additions and 1 deletions
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2
ssl/s3_pkt.c
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@ -1727,7 +1727,7 @@ int ssl3_do_change_cipher_spec(SSL *s)
if (s->s3->tmp.key_block == NULL)
{
if (s->session == NULL)
if (s->session == NULL || s->session->master_key_length == 0)
{
/* might happen if dtls1_read_bytes() calls this */
SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC,SSL_R_CCS_RECEIVED_EARLY);