CVE-2021-43845
Prevent out-of-bounds read in PJSIP
- State
- Published
- Severity
- 8.2 High
- Published
- Dec 27, 2021
- Updated
- Nov 4, 2025
- Reserved
- Nov 16, 2021
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.2 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L | GitHub_M |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
pjprojectpjsip |
|
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
- [debian-lts-announce] 20220328 [SECURITY] [DLA 2962-1] pjproject security updatemailing-list
- GLSA-202210-37vendor-advisory
- [debian-lts-announce] 20221117 [SECURITY] [DLA 3194-1] asterisk security updatemailing-list
- DSA-5285vendor-advisory
- [debian-lts-announce] 20230829 [SECURITY] [DLA 3549-1] ring security updatemailing-list
- https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html
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