CVE-2021-43845

Summary

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.

Affected Software

Weaknesses

• CWE-125: CWE-125: Out-of-bounds Read

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/pjsip/pjproject/security/advisories/GHSA-r374-qrwv-86hh
• https://github.com/pjsip/pjproject/pull/2924
• https://github.com/pjsip/pjproject/commit/f74c1fc22b760d2a24369aa72c74c4a9ab985859
• 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

References

• https://github.com/pjsip/pjproject/security/advisories/GHSA-r374-qrwv-86hh
• https://github.com/pjsip/pjproject/pull/2924
• https://github.com/pjsip/pjproject/commit/f74c1fc22b760d2a24369aa72c74c4a9ab985859
• 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

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