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 2.11.1 and prior, parsing an incoming SIP message that contains a malformed multipart can potentially cause out-of-bound read access. This issue affects all PJSIP users that accept SIP multipart. The patch is available as commit in the `master` branch. There are no known workarounds.
https://www.debian.org/security/2022/dsa-5285
https://security.gentoo.org/glsa/202210-37
https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html
https://github.com/pjsip/pjproject/security/advisories/GHSA-7fw8-54cv-r7pm
https://github.com/pjsip/pjproject/commit/077b465c33f0aec05a49cd2ca456f9a1b112e896
http://seclists.org/fulldisclosure/2022/Mar/2
http://packetstormsecurity.com/files/166227/Asterisk-Project-Security-Advisory-AST-2022-006.html