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Improper escaping of command arguments on Windows leading to command injection

High severity GitHub Reviewed Published Oct 5, 2021 in composer/composer • Updated Feb 5, 2024

Package

composer composer/composer (Composer)

Affected versions

< 1.10.23
>= 2.0.0-alpha1, < 2.1.9

Patched versions

1.10.23
2.1.9

Description

Impact

Windows users running Composer to install untrusted dependencies are affected and should definitely upgrade for safety. Other OSs and WSL are not affected.

Patches

1.10.23 and 2.1.9 fix the issue

Workarounds

None

References

@Seldaek Seldaek published to composer/composer Oct 5, 2021
Published by the National Vulnerability Database Oct 5, 2021
Reviewed Oct 5, 2021
Published to the GitHub Advisory Database Oct 5, 2021
Last updated Feb 5, 2024

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

EPSS score

0.388%
(73rd percentile)

Weaknesses

CVE ID

CVE-2021-41116

GHSA ID

GHSA-frqg-7g38-6gcf

Source code

Credits

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