CVE-2021-40084

CRITICAL

opensysusers < 0.6 - Command Injection via sysusers.d GECOS Field

Title source: llm

Description

opensysusers through 0.6 does not safely use eval on files in sysusers.d that may contain shell metacharacters. For example, it allows command execution via a crafted GECOS field whereas systemd-sysusers (a program with the same specification) does not do that.

References (2)

Core 2

Core References

Exploit, Mailing List, Third Party Advisory x_refsource_misc

https://bugs.debian.org/992058

Release Notes, Third Party Advisory x_refsource_misc

https://github.com/artix-linux/opensysusers/releases

Scores

CVSS v3 9.8

EPSS 0.0271

EPSS Percentile 84.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-94

Status published

Products (1)

artixlinux/opensysusers < 0.6

Published Aug 25, 2021

Tracked Since Feb 18, 2026