CVE-2021-46837
CVSS V2 None
CVSS V3 Medium 6.5
Description
res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certified Asterisk before 16.8-cert7, allows an attacker to trigger a crash by sending an m=image line and zero port in a response to a T.38 re-invite initiated by Asterisk. This is a re-occurrence of the CVE-2019-15297 symptoms but not for exactly the same reason. The crash occurs because there is an append operation relative to the active topology, but this should instead be a replace operation.
Overview
- CVE ID
- CVE-2021-46837
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2022-08-30T07:15:07
- Last Modified Date
- 2023-01-28T01:20:40
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| 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: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:digium:asterisk:*:*:*:*:*:*:*:* | 1 | OR | 16.0.0 | 16.16.2 |
| cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* | 1 | OR | 17.0.0 | 17.9.3 |
| cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* | 1 | OR | 18.0.0 | 18.2.2 |
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://downloads.asterisk.org/pub/security/AST-2021-006.html | Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html | |
| https://www.debian.org/security/2022/dsa-5285 |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-46837 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46837 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-08-30 08:01:15 | Added to TrackCVE | |||
| 2023-01-28 02:13:45 | 2023-01-28T01:20:40 | CVE Modified Date | updated | |
| 2023-01-28 02:13:45 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |