CVE-2019-18976

HOCH 7.5CVE-2019-18976 · Published 22/11/2019 · updated 17/06/2026

Package	Affected versions	Patched versions
asterisk digium	`≥ 13.0.0, ≤ 13.29.1`	No fix yet
certified asterisk digium	`= 13.21`	No fix yet

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.

References

downloads.asterisk.org/pub/security/AST-2019-008.html · Vendor Advisory
lists.debian.org/debian-lts-announce/2022/04/msg00001.html · Mailing List
packetstormsecurity.com/files/155436/Asterisk-Project-Security-Advisory-AST-2019-008.html · Third Party Advisory
seclists.org/fulldisclosure/2019/Nov/20 · Mailing List
asterisk.org/downloads/security-advisories · Vendor Advisory
cybersecurity-help.cz/vdb/SB2019112218 · Third Party Advisory

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free