CVE-2022-24792

Name	CVE-2022-24792
Description	PJSIP is a free and open source multimedia communication library written in C. A denial-of-service vulnerability affects applications on a 32-bit systems that use PJSIP versions 2.12 and prior to play/read invalid WAV files. The vulnerability occurs when reading WAV file data chunks with length greater than 31-bit integers. The vulnerability does not affect 64-bit apps and should not affect apps that only plays trusted WAV files. A patch is available on the `master` branch of the `pjsip/project` GitHub repository. As a workaround, apps can reject a WAV file received from an unknown source or validate the file first.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
References	DLA-3036-1
Debian Bugs	1014976

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
asterisk (PTS)	buster	1:16.2.1~dfsg-1+deb10u2	vulnerable
	bullseye (security), bullseye	1:16.16.1~dfsg-1+deb11u1	vulnerable
	bookworm, sid	1:18.14.0~dfsg+~cs6.12.40431414-1	fixed
ring (PTS)	buster	20190215.1.f152c98~ds1-1+deb10u1	vulnerable
	sid, bullseye	20210112.2.b757bac~ds1-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
asterisk	source	stretch	(not affected)
asterisk	source	(unstable)	1:18.14.0~~rc1~dfsg+~cs6.12.40431414-1			1014976
pjproject	source	stretch	2.5.5~dfsg-6+deb9u5		DLA-3036-1
pjproject	source	(unstable)	(unfixed)
ring	source	(unstable)	(unfixed)	unimportant

Notes

[stretch] - asterisk <not-affected> (Vulnerable code not present)
code is present in ring but ring only uses the pjsip code, not pjmedia
https://github.com/pjsip/pjproject/security/advisories/GHSA-rwgw-vwxg-q799
https://github.com/pjsip/pjproject/commit/947bc1ee6d05be10204b918df75a503415fd3213
should only affect 32bit builds.