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Out-of-bounds Read The advisory has been revoked - it doesn't affect any version of package pjproject  (opens in a new tab)

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EPSS
3.72% (89th percentile)

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  • Snyk IDSNYK-UBUNTU1604-PJPROJECT-2430660
  • published21 Mar 2026
  • disclosed27 Dec 2021
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Introduced: 27 Dec 2021

CVE-2021-43845  (opens in a new tab)
CWE-125  (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:16.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pjproject package and not the pjproject package as distributed by Ubuntu.

PJSIP is a free and open source multimedia communication library. In version 2.11.1 and prior, if incoming RTCP XR message contain block, the data field is not checked against the received packet size, potentially resulting in an out-of-bound read access. This affects all users that use PJMEDIA and RTCP XR. A malicious actor can send a RTCP XR message with an invalid packet size.