CVE-2021-37706
CVSS V2 High 9.3
CVSS V3 Critical 9.8
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 STUN message contains an ERROR-CODE attribute, the header length is not checked before performing a subtraction operation, potentially resulting in an integer underflow scenario. This issue affects all users that use STUN. A malicious actor located within the victim’s network may forge and send a specially crafted UDP (STUN) message that could remotely execute arbitrary code on the victim’s machine. Users are advised to upgrade as soon as possible. There are no known workarounds.
Overview
- CVE ID
- CVE-2021-37706
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-12-22T18:15:07
- Last Modified Date
- 2023-02-02T18:08:22
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:a:asterisk:certified_asterisk:*:*:*:*:*:*:*:* | 1 | OR | 16.8.0 | |
| cpe:2.3:a:asterisk:certified_asterisk:16.8.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert10:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert11:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert12:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert2:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert3:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert4:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert5:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert6:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert7:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert8:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert9:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* | 1 | OR | 16.0.0 | 16.24.1 |
| cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* | 1 | OR | 18.0.0 | 18.10.1 |
| cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* | 1 | OR | 19.0.0 | 19.2.1 |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:C/I:C/A:C
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 9.3
- Severity
- HIGH
- Exploitability Score
- 8.6
- Impact Score
- 10
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| http://packetstormsecurity.com/files/166225/Asterisk-Project-Security-Advisory-AST-2022-004.html | Third Party Advisory VDB Entry |
| http://seclists.org/fulldisclosure/2022/Mar/0 | Mailing List Patch Third Party Advisory |
| https://github.com/pjsip/pjproject/commit/15663e3f37091069b8c98a7fce680dc04bc8e865 | Patch Third Party Advisory |
| https://github.com/pjsip/pjproject/security/advisories/GHSA-2qpg-f6wf-w984 | 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-2021-37706 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37706 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-04-04 00:41:28 | Added to TrackCVE | |||
| 2022-12-06 04:33:19 | 2021-12-22T18:15Z | 2021-12-22T18:15:07 | CVE Published Date | updated |
| 2022-12-06 04:33:19 | 2022-11-18T16:15:10 | CVE Modified Date | updated | |
| 2022-12-06 04:33:19 | Undergoing Analysis | Vulnerability Status | updated | |
| 2022-12-06 04:33:24 | References | updated | ||
| 2023-02-02 18:11:21 | 2023-02-02T18:08:22 | CVE Modified Date | updated | |
| 2023-02-02 18:11:21 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |