CVE ID:	CVE-2021-37706
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 affected versions if the incoming STUN message contains an ERROR-CODE attribute, the header length is not checked before performing a subtraction operation, potentially resulting in an integer underflow scenario. This issue affects all users that use STUN. A malicious actor located within the victim’s network may forge and send a specially crafted UDP (STUN) message that could remotely execute arbitrary code on the victim’s machine. Users are advised to upgrade as soon as possible. There are no known workarounds.
Test IDs:	1.3.6.1.4.1.25623.1.0.892962
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2021-37706 https://github.com/pjsip/pjproject/security/advisories/GHSA-2qpg-f6wf-w984 Debian Security Information: DSA-5285 (Google Search) https://www.debian.org/security/2022/dsa-5285 http://seclists.org/fulldisclosure/2022/Mar/0 https://security.gentoo.org/glsa/202210-37 http://packetstormsecurity.com/files/166225/Asterisk-Project-Security-Advisory-AST-2022-004.html https://github.com/pjsip/pjproject/commit/15663e3f37091069b8c98a7fce680dc04bc8e865 https://github.com/pjsip/pjproject/commit/15663e3f37091069b8c98a7fce680dc04bc8e865 https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html