CVE-2021-37706 | BDVDB-2026-166377 Detail
pjsippjproject
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.
Impact#
Per CVSS v3.1: confidentiality impact low, integrity impact low, availability impact low. Attack vector: network.
Weaknesses#
- CWE-191 Integer Underflow (Wrap or Wraparound)
References#
- https://github.com/pjsip/pjproject/security/advisories/GHSA-2qpg-f6wf-w984
- https://github.com/pjsip/pjproject/commit/15663e3f37091069b8c98a7fce680dc04bc8e865
- http://seclists.org/fulldisclosure/2022/Mar/0
- http://packetstormsecurity.com/files/166225/Asterisk-Project-Security-Advisory-AST-2022-004.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html
- https://security.gentoo.org/glsa/202210-37
- https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
- https://www.debian.org/security/2022/dsa-5285
- https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
- https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.