CVE-2022-23608

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.

How to fix CVE-2022-23608

To remediate CVE-2022-23608, upgrade the affected package to a fixed version below.

• —upgrade to 2.12-r0 or later
• —upgrade to 1:16.28.0~dfsg-0+deb11u1 or later
• —upgrade to 20210112.2.b757bac~ds1-1+deb11u1 or later

Is CVE-2022-23608 being exploited?

Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.

Affected packages (3)

• from 0, < 2.12-r0
• from 0, < 1:16.28.0~dfsg-0+deb11u1
• from 0, < 20210112.2.b757bac~ds1-1+deb11u1

CVSS scores

References (2)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2022-23608
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2022-23608