[sr-dev] git:kamailio_3.0: nathelper(k): safety check for content length

Module: sip-router Branch: kamailio_3.0 Commit: 682ef1b6104ec62e4ec60eefa404c9403f6645c8 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=682ef1b… Author: Daniel-Constantin Mierla <miconda(a)gmail.com> Committer: Daniel-Constantin Mierla <miconda(a)gmail.com> Date: Wed Mar 17 20:00:59 2010 +0100 nathelper(k): safety check for content length - patch by Marcus Hunger, SF#2961414 (cherry picked from commit fb4f98a341322904a92c6f12396f5795a3275c08) --- modules_k/nathelper/nhelpr_funcs.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/modules_k/nathelper/nhelpr_funcs.c b/modules_k/nathelper/nhelpr_funcs.c index 07271f2..3fb5f65 100644 --- a/modules_k/nathelper/nhelpr_funcs.c +++ b/modules_k/nathelper/nhelpr_funcs.c @@ -196,7 +196,13 @@ int extract_body(struct sip_msg *msg, str *body ) LM_ERR("message body has length zero\n"); goto error; } - + + if (body->len + body->s > msg->buf + msg->len) { + LM_ERR("content-length exceeds packet-length by %d\n", + (body->len + body->s) - (msg->buf + msg->len)); + goto error; + } + /* no need for parse_headers(msg, EOH), get_body will * parse everything */ /*is the content type correct?*/