CVE-2019-18976 — Vulnetix

CVE-2019-18976 PUBLISHED

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.

EPSS 0.17% · 37.4th percentile

Risk Scores

EPSS Score

0.17%

37.4th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:18.04:LTS	asterisk	0, 1:13.17.2~dfsg-1ubuntu1, 1:13.18.1~dfsg-1ubuntu1
Ubuntu:Pro:16.04:LTS	asterisk	0, 1:13.1.0~dfsg-1.1ubuntu4, 1:13.1.0~dfsg-1.1ubuntu4.1

Exploit Intelligence

Timeline

Nov 21, 2019 CVE Published
Apr 14, 2021 EPSS Score
Jun 23, 2021 EPSS Score
Oct 26, 2021 EPSS Score
Dec 27, 2021 EPSS Score
Jan 6, 2022 EPSS Score
Feb 28, 2022 EPSS Score
Apr 1, 2022 EPSS Score
May 1, 2022 EPSS Score
Sep 4, 2022 EPSS Score
Nov 6, 2022 EPSS Score
Jan 8, 2023 EPSS Score

References

https://ubuntu.com/security/CVE-2019-18976 third-party-advisory
https://downloads.asterisk.org/pub/security/AST-2019-008.html third-party-advisory
https://issues.asterisk.org/jira/browse/ASTERISK-28612 third-party-advisory
http://downloads.asterisk.org/pub/security/AST-2019-008.html third-party-advisory
https://packetstormsecurity.com/files/155436/Asterisk-Project-Security-Advisory-AST-2019-008.html third-party-advisory
https://seclists.org/fulldisclosure/2019/Nov/20 third-party-advisory
https://www.asterisk.org/downloads/security-advisories third-party-advisory
https://www.cybersecurity-help.cz/vdb/SB2019112218?affChecked=1 third-party-advisory
https://www.cve.org/CVERecord?id=CVE-2019-18976 third-party-advisory

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