Published: 22/11/2019 Updated: 03/06/2022

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

An issue exists in res_pjsip_t38.c in Sangoma Asterisk up to and including 13.x and Certified Asterisk up to and including 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.

Vulnerable Product	Search on Vulmon	Subscribe to Product
digium certified asterisk 13.21
digium asterisk
debian debian linux 9.0

Asterisk Project Security Advisory - Product Asterisk Summary Re-invite with T38 and malformed SDP causes crash Nature of Advisory Remote Crash Susceptibility Remote Authenticated Sessions ...

CWE-476 https://www.cybersecurity-help.cz/vdb/SB2019112218?affChecked=1 https://www.asterisk.org/downloads/security-advisories http://downloads.asterisk.org/pub/security/AST-2019-008.html https://packetstormsecurity.com/files/155436/Asterisk-Project-Security-Advisory-AST-2019-008.html https://seclists.org/fulldisclosure/2019/Nov/20 https://lists.debian.org/debian-lts-announce/2022/04/msg00001.html https://nvd.nist.gov http://seclists.org/fulldisclosure/2019/Nov/20

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CVE-2019-18976

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