generic-library/openssl
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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.
This commit is contained in:
Dr. Stephen Henson 2014-05-16 12:55:16 +01:00
parent bc8923b1ec
commit 006cd7083f
1 changed files with 1 additions and 1 deletions
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2
ssl/s3_pkt.c
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@ -1459,7 +1459,7 @@ int ssl3_do_change_cipher_spec(SSL *s)
if (s->s3->tmp.key_block == NULL) 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 */ /* might happen if dtls1_read_bytes() calls this */
SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC,SSL_R_CCS_RECEIVED_EARLY); SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC,SSL_R_CCS_RECEIVED_EARLY);