From e76cc51d5e1d10f7df3855f5a5f233da1140486e Mon Sep 17 00:00:00 2001
From: Alexander Traud <pabstraud@compuserve.com>
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;
}
--
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