CVE-2021-43804
Out-of-bounds read when parsing RTCP BYE message in PJSIP
02 Description
Out-of-bounds read when parsing RTCP BYE message in PJSIP
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.29% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 82.9% of scored records. A rank, not a probability.
- NVD base score
- 7.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-12-22 00:00Z4 YR AGO
- Last updated
- 2025-11-04 16:09Z11 MO AGO
- Reserved
- 2021-11-16
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.3)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- Weaknesses
- CWE-125Out-of-bounds ReadBase
- Data version
- 5.2
- Document digest
- 49ca1cf1e5fe3e85abbc8966d19a701bacac5901252ee51a539b16b3bb4685f6
05 Affected products
06 References
- github.comhttps://github.com/pjsip/pjproject/security/advisories/GHSA-3qx3-cg72-wrh9
- github.comhttps://github.com/pjsip/pjproject/commit/8b621f192cae14456ee0b0ade52ce6c6f258af1e
- lists.debian.org[debian-lts-announce] 20220328 [SECURITY] [DLA 2962-1] pjproject security updatehttps://lists.debian.org/debian-lts-announce/2022/03/msg00035.html
- security.gentoo.orgGLSA-202210-37https://security.gentoo.org/glsa/202210-37
- lists.debian.org[debian-lts-announce] 20221117 [SECURITY] [DLA 3194-1] asterisk security updatehttps://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
- www.debian.orgDSA-5285https://www.debian.org/security/2022/dsa-5285
- lists.debian.org[debian-lts-announce] 20230829 [SECURITY] [DLA 3549-1] ring security updatehttps://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/09/msg00030.html
07 Fixed in
Debian 12
- ring Fixed in 20230206.0~ds1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- asterisk Fixed in 1:18.12.0~dfsg+~cs6.12.40431413-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- ring Fixed in 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- pjproject No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- pjproject No fix yet
- ring Fixed in 20180228.1.503da2b~ds1-1ubuntu0.1~esm1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.