CVE-2022-23608 Information

Description

PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP SDP RTP STUN TURN and ICE. In versions up to and including 2.11.1 when in a dialog set (or forking) scenario a hash key shared by multiple UAC dialogs can potentially be prematurely freed when one of the dialogs is destroyed . The issue may cause a dialog set to be registered in the hash table multiple times (with different hash keys) leading to undefined behavior such as dialog list collision which eventually leading to endless loop. A patch is available in commit db3235953baa56d2fb0e276ca510fefca751643f which will be included in the next release. There are no known workarounds for this issue.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://github.com/pjsip/pjproject/security/advisories/GHSA-ffff-m5fm-qm62 https://github.com/pjsip/pjproject/commit/db3235953baa56d2fb0e276ca510fefca751643f http://seclists.org/fulldisclosure/2022/Mar/1 http://packetstormsecurity.com/files/166226/Asterisk-Project-Security-Advisory-AST-2022-005.html https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html https://lists.debian.org/debian-lts-announce/2022/03/msg00040.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8