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Gentoo Linux Security Advisory                           GLSA 202508-06
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Composer: Multiple Vulnerabilities
     Date: August 06, 2025
     Bugs: #838268
       ID: 202508-06

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Synopsis
=======
Multiple vulnerabilities have been discovered in Composer, the worst of
which can lead to arbitrary code execution.

Background
=========
Composer is a dependency manager for the PHP programming language.

Affected packages
================
Package           Vulnerable    Unaffected
----------------  ------------  ------------
dev-php/composer  <= 9999       Vulnerable!

Description
==========
Integrators using Composer code to call `VcsDriver::getFileContent` can
have a code injection vulnerability if the user can control the `$file`
or `$identifier` argument. This leads to a vulnerability on
packagist.org for example where the composer.json's `readme` field can
be used as a vector for injecting parameters into hg/Mercurial via the
`$file` argument, or git via the `$identifier` argument if you allow
arbitrary data there (Packagist does not, but maybe other integrators
do). Composer itself should not be affected by the vulnerability as it
does not call `getFileContent` with arbitrary data into
`$file`/`$identifier`.

Impact
=====
Please review the referenced CVE identifiers for details.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
Gentoo has discontinued support for composer and the package should be
removed:

  # emerge --sync
  # emerge --ask --verbose  --depclean "dev-php/composer"

References
=========
[ 1 ] CVE-2022-24828
      https://nvd.nist.gov/vuln/detail/CVE-2022-24828
[ 2 ] CVE-2023-43655
      https://nvd.nist.gov/vuln/detail/CVE-2023-43655

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202508-06

Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
======
Copyright 2025 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5