High severity7.5NVD Advisory· Published Nov 22, 2019· Updated Jun 17, 2026
CVE-2019-18976
CVE-2019-18976
Description
An issue was discovered in res_pjsip_t38.c in Sangoma Asterisk through 13.x and Certified Asterisk through 13.21-x. If it receives a re-invite initiating T.38 faxing and has a port of 0 and no c line in the SDP, a NULL pointer dereference and crash will occur. This is different from CVE-2019-18940.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
10cpe:2.3:a:digium:certified_asterisk:13.21:*:*:*:*:*:*:*+ 4 more
- cpe:2.3:a:digium:certified_asterisk:13.21:*:*:*:*:*:*:*
- cpe:2.3:a:digium:certified_asterisk:13.21:cert1:*:*:*:*:*:*
- cpe:2.3:a:digium:certified_asterisk:13.21:cert2:*:*:*:*:*:*
- cpe:2.3:a:digium:certified_asterisk:13.21:cert3:*:*:*:*:*:*
- cpe:2.3:a:digium:certified_asterisk:13.21:cert4:*:*:*:*:*:*
- Sangoma/Asteriskdescription
Patches
Vulnerability mechanics
References
6- downloads.asterisk.org/pub/security/AST-2019-008.htmlnvdVendor Advisory
- lists.debian.org/debian-lts-announce/2022/04/msg00001.htmlnvdMailing ListThird Party Advisory
- packetstormsecurity.com/files/155436/Asterisk-Project-Security-Advisory-AST-2019-008.htmlnvdThird Party AdvisoryVDB Entry
- seclists.org/fulldisclosure/2019/Nov/20nvdMailing ListThird Party Advisory
- www.asterisk.org/downloads/security-advisoriesnvdVendor Advisory
- www.cybersecurity-help.cz/vdb/SB2019112218nvdThird Party Advisory
News mentions
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