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CVE-2023-43655

Date: September 29, 2023

Composer is a dependency manager for PHP. Users publishing a composer.phar to a public web-accessible server where the composer.phar can be executed as a php file may be subject to a remote code execution vulnerability if PHP also has "register_argc_argv" enabled in php.ini. Versions 2.6.4, 2.2.22 and 1.10.27 patch this vulnerability. Users are advised to upgrade. Users unable to upgrade should make sure "register_argc_argv" is disabled in php.ini, and avoid publishing composer.phar to the web as this is not best practice.

Language: PHP

Severity Score

Related Resources (15)

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7AWYAUZNH565NWPIKGEIYBWHYNM5JGAE
https://github.com/composer/composer/commit/95e091c921037b7b6564942845e7b738f6b95c9c
https://security-tracker.debian.org/tracker/CVE-2023-43655
https://github.com/composer/composer/commit/4fce14795aba98e40b6c4f5047305aba17a6120d
https://lists.debian.org/debian-lts-announce/2024/03/msg00030.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7AWYAUZNH565NWPIKGEIYBWHYNM5JGAE/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KFOPGPW2KS37O3KJWBRGTUWHTXCQXBS2
https://github.com/composer/composer/commit/955a48e6319c8962e5cd421b07c00ab3c728968c
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/66H2WKFUO255T3BZTL72TNYJYH2XM5FG/
https://nvd.nist.gov/vuln/detail/CVE-2023-43655
https://github.com/composer/composer
https://github.com/composer/composer/security/advisories/GHSA-jm6m-4632-36hf
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KFOPGPW2KS37O3KJWBRGTUWHTXCQXBS2/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/66H2WKFUO255T3BZTL72TNYJYH2XM5FG
https://www.mend.io/vulnerability-database/CVE-2023-43655

Severity Score

Weakness Type (CWE)

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-74

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): HIGH
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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