CVE-2021-43804
CVSS V2 High 7.5
CVSS V3 High 7.3
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 affected versions if the incoming RTCP BYE message contains a reason's length, this declared length is not checked against the actual received packet size, potentially resulting in an out-of-bound read access. This issue affects all users that use PJMEDIA and RTCP. A malicious actor can send a RTCP BYE message with an invalid reason length. Users are advised to upgrade as soon as possible. There are no known workarounds.
Overview
- CVE ID
- CVE-2021-43804
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-12-22T18:15:07
- Last Modified Date
- 2023-02-02T18:08:18
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:* | 1 | OR | 2.11.1 | |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 7.5
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- LOW
- Base Score
- 7.3
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.4
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/pjsip/pjproject/commit/8b621f192cae14456ee0b0ade52ce6c6f258af1e | Patch Third Party Advisory |
| https://github.com/pjsip/pjproject/security/advisories/GHSA-3qx3-cg72-wrh9 | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html | |
| https://security.gentoo.org/glsa/202210-37 | Third Party Advisory |
| https://www.debian.org/security/2022/dsa-5285 |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-43804 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43804 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-04-04 00:41:27 | Added to TrackCVE | |||
| 2022-12-06 04:34:03 | 2021-12-22T18:15Z | 2021-12-22T18:15:07 | CVE Published Date | updated |
| 2022-12-06 04:34:03 | 2022-11-18T16:15:12 | CVE Modified Date | updated | |
| 2022-12-06 04:34:03 | Undergoing Analysis | Vulnerability Status | updated | |
| 2022-12-06 04:34:08 | References | updated | ||
| 2023-02-02 18:11:21 | 2023-02-02T18:08:18 | CVE Modified Date | updated | |
| 2023-02-02 18:11:21 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |