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CVE-2019-18976

Published: 22 November 2019

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.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
asterisk
Launchpad, Ubuntu, Debian
impish Not vulnerable

groovy Not vulnerable

hirsute Not vulnerable

xenial Needs triage

jammy Not vulnerable

kinetic Not vulnerable

lunar Not vulnerable

bionic Needs triage

disco Not vulnerable
(1:16.2.1~dfsg-1)
eoan Not vulnerable

focal Not vulnerable

trusty Does not exist

upstream
Released (1:16.1.1~dfsg-1)
mantic Not vulnerable

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H