kenmirrors/asterisk
1
0
Fork 0
mirror of https://github.com/asterisk/asterisk.git synced 2025-09-18 10:51:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

res_pjsip_session: Check if sequence header is missing

Browse Source 
The pjsip_msg_find_hdr function can return NULL. This patch adds a check
when searching for the sequence header to make sure a NULL pointer is never
de-referenced.

Change-Id: I19af23aeeded65be016be92360e8cb7ffe51fad2
This commit is contained in:
Kevin Harwell
2018-01-03 10:41:46 -06:00
parent 84d0871380
commit 62f862e2cd
1 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
res/res_pjsip_session.c
View File

@@ -3309,6 +3309,12 @@ static void handle_outgoing_response(struct ast_sip_session *session, pjsip_tx_d
struct ast_sip_session_supplement *supplement;
struct pjsip_status_line status = tdata->msg->line.status;
pjsip_cseq_hdr *cseq = pjsip_msg_find_hdr(tdata->msg, PJSIP_H_CSEQ, NULL);
if (!cseq) {
ast_log(LOG_ERROR, "Cannot send response due to missing sequence header");
return;
}
ast_debug(3, "Method is %.*s, Response is %d %.*s\n", (int) pj_strlen(&cseq->method.name),
pj_strbuf(&cseq->method.name), status.code, (int) pj_strlen(&status.reason),
pj_strbuf(&status.reason));