CVE-2024-24821: high-severity vulnerability in composer
Code execution and possible privilege escalation via compromised InstalledVersions.php or installed.php in Composer
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.3%
Composer is a dependency Manager for the PHP language. In affected versions several files within the local working directory are included during the invocation of Composer and in the context of the executing user. As such, under certain conditions arbitrary code execution may lead to local privilege escalation, provide lateral user movement or malicious code execution when Composer is invoked within a directory with tampered files. All Composer CLI commands are affected, including composer.phar's self-update. The following scenarios are of high risk: Composer being run with sudo, Pipelines which may execute Composer on untrusted projects, Shared environments with developers who run Composer individually on the same project. This vulnerability has been addressed in versions 2.7.0 and 2.2.23. It is advised that the patched versions are applied at the earliest convenience. Where not possible, the following should be addressed: Remove all sudo composer privileges for all users to mitigate root privilege escalation, and avoid running Composer within an untrusted directory, or if needed, verify that the contents of `vendor/composer/InstalledVersions.php` and `vendor/composer/installed.php` do not include untrusted code. A reset can also be done on these files by the following:```sh
rm vendor/composer/installed.php vendor/composer/InstalledVersions.php
composer install --no-scripts --no-plugins
```
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products
composer · composerRelated CVEs — composer
In the same product, most dangerous first.
CVE-2021-29472HIGHMissing argument delimiter can lead to code execution via VCS repository URLs or source download URLs on systems with Mercurial in composerEPSS 4.8%CVE-2024-35242HIGHComposer vulnerable to command injection via malicious git/hg branch namesEPSS 3.3%CVE-2021-41116HIGHCommand injection in composer on WindowsEPSS 2.8%CVE-2022-24828HIGHMissing input validation can lead to command execution in composerEPSS 1.9%CVE-2026-40261HIGHComposer has Command Injection via Malicious Perforce ReferenceEPSS 1.7%CVE-2023-43655MEDIUMRemote Code Execution via web-accessible composer.pharEPSS 1.5%