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.
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
| Link | Tags |
|---|---|
| https://github.com/pjsip/pjproject/security/advisories/GHSA-2qpg-f6wf-w984 | third party advisory patch |
| https://github.com/pjsip/pjproject/commit/15663e3f37091069b8c98a7fce680dc04bc8e865 | third party advisory patch |
| http://seclists.org/fulldisclosure/2022/Mar/0 | mailing list third party advisory patch |
| http://packetstormsecurity.com/files/166225/Asterisk-Project-Security-Advisory-AST-2022-004.html | vdb entry third party advisory |
| https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html | third party advisory mailing list |
| https://security.gentoo.org/glsa/202210-37 | third party advisory vendor advisory |
| https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html | third party advisory mailing list |
| https://www.debian.org/security/2022/dsa-5285 | third party advisory vendor advisory |
| https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html | mailing list |