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Vulnerability CVE-2021-37706
Published: 2021-12-22
| 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. |
Type:
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
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