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CVE-2020-24916

Published: 9 September 2020

CGI implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to OS command injection.

From the Ubuntu Security Team

It was discovered that Yaws mishandled certain input when running CGI scripts. A remote attacker could use this vulnerability to execute arbitrary commands.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
yaws
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(2.0.8+dfsg-1)
trusty Does not exist

upstream
Released (2.0.8+dfsg-1)
bionic
Released (2.0.4+dfsg-2ubuntu0.1)
focal Needed

groovy Ignored
(end of life)
xenial Needed

jammy Not vulnerable
(2.0.8+dfsg-1)
kinetic Not vulnerable
(2.0.8+dfsg-1)
impish Not vulnerable
(2.0.8+dfsg-1)
lunar Not vulnerable
(2.0.8+dfsg-1)
mantic Not vulnerable
(2.0.8+dfsg-1)

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H