CVE-2020-28242 describes a denial-of-service vulnerability in Asterisk Open Source versions 13.x, 16.x, 17.x, and 18.x, as well as Certified Asterisk before 16.8-cert5. When Asterisk is challenged on an outbound INVITE and the nonce changes in each response, it enters an infinite loop, consuming increasing memory and ultimately leading to a system restart or shutdown. This vulnerability has a CVSS score of 6.5 (Medium), indicating a network-based attack with low complexity and high availability impact, requiring low privileges. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 16.8.0CPE matchmatch criteria | cpe:2.3:a:asterisk:certified_asterisk:*:*:*:*:*:*:*:* | ||
>= 13.0, < 13.37.1CPE matchmatch criteria | cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* | ||
>= 16.0, < 16.14.1CPE matchmatch criteria | cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* | ||
>= 17.0, < 17.8.1CPE matchmatch criteria | cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* | ||
>= 18.0, < 18.0.1CPE matchmatch criteria | cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.