What’s Vulnerable › Vulnerabilities

CVE-2022-21722: Potential out-of-bound read during RTP/RTCP parsing in PJSIP

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-27 · updated 2026-06-17
• Weakness: CWE-125

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 version 2.11.1 and prior, there are various cases where it is possible that certain incoming RTP/RTCP packets can potentially cause out-of-bound read access. This issue affects all users that use PJMEDIA and accept incoming RTP/RTCP. A patch is available as a commit in the `master` branch. There are no known workarounds.

Affected products

• Debian Linux: 9.0, 10.0
• teluu pjsip: through 2.11.1

References

• https://github.com/pjsip/pjproject/commit/22af44e68a0c7d190ac1e25075e1382f77e9397a
• https://github.com/pjsip/pjproject/security/advisories/GHSA-m66q-q64c-hv36
• https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html
• https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
• https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
• https://security.gentoo.org/glsa/202210-37
• https://www.debian.org/security/2022/dsa-5285
• https://github.com/pjsip/pjproject/commit/22af44e68a0c7d190ac1e25075e1382f77e9397a
• https://github.com/pjsip/pjproject/security/advisories/GHSA-m66q-q64c-hv36
• https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html
• https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
• https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html

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