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CVE-2021-40084

Date: August 24, 2021

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.

Language: SHELL

Severity Score

Related Resources (6)

https://bugs.debian.org/992058
https://github.com/artix-linux/opensysusers/releases
https://nvd.nist.gov/vuln/detail/CVE-2021-40084
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-40084
https://security-tracker.debian.org/tracker/CVE-2021-40084
https://www.mend.io/vulnerability-database/CVE-2021-40084

Severity Score

Weakness Type (CWE)

Code Injection

CWE-94

Command Injection

CWE-77

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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