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CVE-2022-24793

Published: 6 April 2022

PJSIP is a free and open source multimedia communication library written in C. A buffer overflow vulnerability in versions 2.12 and prior affects applications that use PJSIP DNS resolution. It doesn't affect PJSIP users who utilize an external resolver. This vulnerability is related to CVE-2023-27585. The difference is that this issue is in parsing the query record `parse_rr()`, while the issue in CVE-2023-27585 is in `parse_query()`. A patch is available in the `master` branch of the `pjsip/pjproject` GitHub repository. A workaround is to disable DNS resolution in PJSIP config (by setting `nameserver_count` to zero) or use an external resolver instead.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
pjproject
Launchpad, Ubuntu, Debian
bionic Needs triage

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Needs triage

ring
Launchpad, Ubuntu, Debian
bionic
Released (20180228.1.503da2b~ds1-1ubuntu0.1~esm1)
Available with Ubuntu Pro
focal
Released (20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1)
impish Ignored
(end of life)
lunar Not vulnerable
(20230206.0~ds1-5)
mantic Not vulnerable
(20230206.0~ds2-1.3)
trusty Ignored
(end of standard support)
upstream Needs triage

xenial Ignored
(end of standard support)
sflphone
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
upstream Needs triage

xenial Ignored
(end of standard support)

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