CVE-2020-28242
CVSS V2 Medium 4
CVSS V3 Medium 6.5
Description
An issue was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1 and Certified Asterisk before 16.8-cert5. If Asterisk is challenged on an outbound INVITE and the nonce is changed in each response, Asterisk will continually send INVITEs in a loop. This causes Asterisk to consume more and more memory since the transaction will never terminate (even if the call is hung up), ultimately leading to a restart or shutdown of Asterisk. Outbound authentication must be configured on the endpoint for this to occur.
Overview
- CVE ID
- CVE-2020-28242
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2020-11-06T06:15:11
- Last Modified Date
- 2022-06-05T03:11:42
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:asterisk:certified_asterisk:*:*:*:*:*:*:*:* | 1 | OR | 16.8.0 | |
| cpe:2.3:a:asterisk:open_source:*:*:*:*:*:*:*:* | 1 | OR | 13.0 | 13.37.1 |
| cpe:2.3:a:asterisk:open_source:*:*:*:*:*:*:*:* | 1 | OR | 16.0 | 16.14.1 |
| cpe:2.3:a:asterisk:open_source:*:*:*:*:*:*:*:* | 1 | OR | 17.0 | 17.8.1 |
| cpe:2.3:a:asterisk:open_source:*:*:*:*:*:*:*:* | 1 | OR | 18.0 | 18.0.1 |
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 4
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 2.9
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 |
|---|---|
| http://downloads.asterisk.org/pub/security/AST-2020-002.html | Vendor Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QUS54QTQCYKR36EIULYD544GXDA644HB/ | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/04/msg00001.html |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-28242 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28242 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-04-04 00:38:44 | Added to TrackCVE | |||
| 2022-12-05 16:12:14 | 2020-11-06T06:15Z | 2020-11-06T06:15:11 | CVE Published Date | updated |
| 2022-12-05 16:12:14 | 2022-06-05T03:11:42 | CVE Modified Date | updated | |
| 2022-12-05 16:12:14 | Analyzed | Vulnerability Status | updated |