CVE-2023-43655

2023-09-2900:00:00

ubuntu.com

composer

php

dependency

manager

vulnerability

rce

upgrade

php.ini

best practice

unix

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

0.005 Low

EPSS

Percentile

76.0%

JSON

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.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchcomposer< anyUNKNOWN
ubuntu20.04noarchcomposer< anyUNKNOWN
ubuntu22.04noarchcomposer< anyUNKNOWN
ubuntu23.10noarchcomposer< anyUNKNOWN
ubuntu24.04noarchcomposer< anyUNKNOWN
ubuntu16.04noarchcomposer< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	composer	< any	UNKNOWN
ubuntu	20.04	noarch	composer	< any	UNKNOWN
ubuntu	22.04	noarch	composer	< any	UNKNOWN
ubuntu	23.10	noarch	composer	< any	UNKNOWN
ubuntu	24.04	noarch	composer	< any	UNKNOWN
ubuntu	16.04	noarch	composer	< any	UNKNOWN