VDB
CVE-2020-28242
CVE-2020-28242
PUBLISHED
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 0.41% · 61.5th percentile
Risk Scores
EPSS Score
0.41%
61.5th 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 |
Exploit Intelligence
Timeline
- Nov 6, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Apr 3, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 4, 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