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.
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Composer | Getcomposer | * | 1.10.27 (excluding) |
| Composer | Getcomposer | 2.0.0 (including) | 2.2.21 (excluding) |
| Composer | Getcomposer | 2.3.0 (including) | 2.6.4 (excluding) |
| Composer | Ubuntu | bionic | * |
| Composer | Ubuntu | lunar | * |
| Composer | Ubuntu | mantic | * |
| Composer | Ubuntu | trusty | * |
| Composer | Ubuntu | xenial | * |