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 prior to and including 2.12.1 a stack buffer overflow vulnerability affects PJSIP users that use STUN in their applications, either by: setting a STUN server in their account/media config in PJSUA/PJSUA2 level, or directly using `pjlib-util/stun_simple` API. A patch is available in commit 450baca which should be included in the next release. There are no known workarounds for this issue.
https://www.debian.org/security/2023/dsa-5358
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/2023/02/msg00029.html
https://github.com/pjsip/pjproject/security/advisories/GHSA-26j7-ww69-c4qj
https://github.com/pjsip/pjproject/commit/450baca94f475345542c6953832650c390889202