by Kastro
Paper/Archive/CVE-2021-43845

CVE-2021-43845

pjsip pjproject — Prevent out-of-bounds read in PJSIP

EPSS 4%CVSS 9.1
critical.is priorityof 100
45
CVSS 9.1 (NVD)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 90.2.902 × 2018.0No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
pjproject<= 2.11.1–CNA

Scores by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
GitHub_M (CNA)8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

References

refgithub.com/pjsip/pjproject/security/advisories/GHSA-r374-qrwv-86hhrefgithub.com/pjsip/pjproject/pull/2924refgithub.com/pjsip/pjproject/commit/f74c1fc22b760d2a24369aa72c74c4a9ab985859reflists.debian.org/debian-lts-announce/2022/03/msg00035.htmladvisorysecurity.gentoo.org/glsa/202210-37reflists.debian.org/debian-lts-announce/2022/11/msg00021.htmladvisorydebian.org/security/2022/dsa-5285reflists.debian.org/debian-lts-announce/2023/08/msg00038.htmlreflists.debian.org/debian-lts-announce/2024/09/msg00030.html