From e76cc51d5e1d10f7df3855f5a5f233da1140486e Mon Sep 17 00:00:00 2001 From: Alexander Traud Date: Wed, 29 Mar 2017 15:04:05 +0200 Subject: [PATCH] srtp: Allow zero as tag value for a sRTP Crypto Suite. ASTERISK-25490 #close Change-Id: I1c5fc0942c33c96d62b24203aad0f1e1a1a0131f --- res/res_srtp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/res/res_srtp.c b/res/res_srtp.c index a611e61657..c47a8d55e8 100644 --- a/res/res_srtp.c +++ b/res/res_srtp.c @@ -782,8 +782,8 @@ static int res_sdp_crypto_parse_offer(struct ast_rtp_instance *rtp, struct ast_s return -1; } - /* RFC4568 9.1 - tag is 1-9 digits, greater than zero */ - if (sscanf(tag, "%30d", &tag_from_sdp) != 1 || tag_from_sdp <= 0 || tag_from_sdp > 999999999) { + /* RFC4568 9.1 - tag is 1-9 digits */ + if (sscanf(tag, "%30d", &tag_from_sdp) != 1 || tag_from_sdp < 0 || tag_from_sdp > 999999999) { ast_log(LOG_WARNING, "Unacceptable a=crypto tag: %s\n", tag); return -1; }