From ef19db92615f8f29604e0df2ec78036bd003cdfa Mon Sep 17 00:00:00 2001 From: Alexander Traud Date: Wed, 29 Mar 2017 15:27:01 +0200 Subject: [PATCH] srtp: Allow zero as tag value for a sRTP Crypto Suite. ASTERISK-25490 #close Change-Id: I1c5fc0942c33c96d62b24203aad0f1e1a1a0131f --- main/sdp_srtp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/main/sdp_srtp.c b/main/sdp_srtp.c index d77d4630d3..3d1d850397 100644 --- a/main/sdp_srtp.c +++ b/main/sdp_srtp.c @@ -238,8 +238,8 @@ int ast_sdp_crypto_process(struct ast_rtp_instance *rtp, struct ast_sdp_srtp *sr return -1; } - /* RFC4568 9.1 - tag is 1-9 digits, greater than zero */ - if (sscanf(tag, "%30d", &crypto->tag) != 1 || crypto->tag <= 0 || crypto->tag > 999999999) { + /* RFC4568 9.1 - tag is 1-9 digits */ + if (sscanf(tag, "%30d", &crypto->tag) != 1 || crypto->tag < 0 || crypto->tag > 999999999) { ast_log(LOG_WARNING, "Unacceptable a=crypto tag: %s\n", tag); return -1; }