VDB
CVE-2020-28242
CVE-2020-28242
PUBLISHED
CVSS 6.5 MEDIUM
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.
EPSS 1.56% · 73.4th percentile
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
1.56%
73.4th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | asterisk | 0, 1:13.17.2~dfsg-2ubuntu1, 1:13.18.3~dfsg-1ubuntu2 |
| Ubuntu:Pro:16.04:LTS | asterisk | *, 0, 1:13.1.0~dfsg-1.1ubuntu4 |
| Ubuntu:20.04:LTS | asterisk | 1:16.2.1~dfsg-2build2, 1:16.2.1~dfsg-2build3, 1:16.2.1~dfsg-2ubuntu1 |
Timeline
- Nov 6, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Dec 28, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 4, 2022 EPSS Score
- Sep 6, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-28242 third-party-advisory
- http://downloads.asterisk.org/pub/security/AST-2020-002.html third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-28242 third-party-advisory