CVE-2021-32686 – Denial of Service in PJSIP

https://notcve.org/view.php?id=CVE-2021-32686

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 PJSIP before version 2.11.1, there are a couple of issues found in the SSL socket. First, a race condition between callback and destroy, due to the accepted socket having no group lock. Second, the SSL socket parent/listener may get destroyed during handshake. Both issues were reported to happen intermittently in heavy load TLS connections. • https://github.com/pjsip/pjproject/commit/d5f95aa066f878b0aef6a64e60b61e8626e664cd https://github.com/pjsip/pjproject/pull/2716 https://github.com/pjsip/pjproject/releases/tag/2.11.1 https://github.com/pjsip/pjproject/security/advisories/GHSA-cv8x-p47p-99wr https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html https://security.gentoo.org/glsa/202210-37 https://www.debian.org/security/2021/dsa-4999 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •