VulnerabilityModified
CVE-2021-43845
A malicious actor can send a RTCP XR message with an invalid packet size.
CRITICAL 9.1EPSS 3.72%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.72%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 3.72% probability · 89th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- teluu/pjsip · debian/debian linux
- Source
- security-advisories@github.com
References
- https://github.com/pjsip/pjproject/commit/f74c1fc22b760d2a24369aa72c74c4a9ab985859Patch, Third Party Advisory
- https://github.com/pjsip/pjproject/pull/2924Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/pjsip/pjproject/security/advisories/GHSA-r374-qrwv-86hhPatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00035.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00021.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
- https://security.gentoo.org/glsa/202210-37Third Party Advisory
- https://www.debian.org/security/2022/dsa-5285Third Party Advisory
- https://github.com/pjsip/pjproject/commit/f74c1fc22b760d2a24369aa72c74c4a9ab985859Patch, Third Party Advisory
- https://github.com/pjsip/pjproject/pull/2924Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/pjsip/pjproject/security/advisories/GHSA-r374-qrwv-86hhPatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00035.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00021.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
- https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html
- https://security.gentoo.org/glsa/202210-37Third Party Advisory
- https://www.debian.org/security/2022/dsa-5285Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.