From e2994cf09969166e9596a07eca91bcbe61524b30 Mon Sep 17 00:00:00 2001 From: Matt Caswell Date: Mon, 7 Nov 2016 15:07:56 +0000 Subject: [PATCH] Load the sessionid directly in SSLv2 compat ClientHello Don't use a sub-packet, just load it. Reviewed-by: Kurt Roeckx Reviewed-by: Rich Salz --- ssl/statem/statem_srvr.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/ssl/statem/statem_srvr.c b/ssl/statem/statem_srvr.c index 2ec862caca..7cc3dfac54 100644 --- a/ssl/statem/statem_srvr.c +++ b/ssl/statem/statem_srvr.c @@ -950,7 +950,7 @@ MSG_PROCESS_RETURN tls_process_client_hello(SSL *s, PACKET *pkt) /* * Handle an SSLv2 backwards compatible ClientHello * Note, this is only for SSLv3+ using the backward compatible format. - * Real SSLv2 is not supported, and is rejected above. + * Real SSLv2 is not supported, and is rejected below. */ unsigned int ciphersuite_len, session_id_len, challenge_len; PACKET challenge; @@ -973,7 +973,7 @@ MSG_PROCESS_RETURN tls_process_client_hello(SSL *s, PACKET *pkt) if (!PACKET_get_sub_packet(pkt, &clienthello.ciphersuites, ciphersuite_len) - || !PACKET_get_sub_packet(pkt, &session_id, + || !PACKET_copy_bytes(pkt, clienthello.session_id, clienthello.session_id_len) || !PACKET_get_sub_packet(pkt, &challenge, challenge_len) /* No extensions. */ @@ -1002,7 +1002,10 @@ MSG_PROCESS_RETURN tls_process_client_hello(SSL *s, PACKET *pkt) } else { /* Regular ClientHello. */ if (!PACKET_copy_bytes(pkt, clienthello.random, SSL3_RANDOM_SIZE) - || !PACKET_get_length_prefixed_1(pkt, &session_id)) { + || !PACKET_get_length_prefixed_1(pkt, &session_id) + || !PACKET_copy_all(&session_id, clienthello.session_id, + SSL_MAX_SSL_SESSION_ID_LENGTH, + &clienthello.session_id_len)) { al = SSL_AD_DECODE_ERROR; SSLerr(SSL_F_TLS_PROCESS_CLIENT_HELLO, SSL_R_LENGTH_MISMATCH); goto f_err; @@ -1057,10 +1060,8 @@ MSG_PROCESS_RETURN tls_process_client_hello(SSL *s, PACKET *pkt) } if (!PACKET_copy_all(&compression, clienthello.compressions, - MAX_COMPRESSIONS_SIZE, &clienthello.compressions_len) - || !PACKET_copy_all(&session_id, clienthello.session_id, - SSL_MAX_SSL_SESSION_ID_LENGTH, - &clienthello.session_id_len)) { + MAX_COMPRESSIONS_SIZE, + &clienthello.compressions_len)) { al = SSL_AD_DECODE_ERROR; SSLerr(SSL_F_TLS_PROCESS_CLIENT_HELLO, SSL_R_LENGTH_MISMATCH); goto f_err; -- 2.25.1