Laravel allows environment manipulation via query string

Vulnerability

Overview

CVE-2024-52301 affects the Laravel web application framework. When the PHP directive register_argc_argv is set to on, an attacker can craft a special query string that, when requested, alters the environment used by the framework to handle the request. This allows the attacker to control the application's environment variable, which can lead to unintended configuration changes. [1][2]

Exploitation

Details

The vulnerability is exploitable by sending a specially crafted URL to the application. No authentication is required, and the attack can be performed over the network. The prerequisite is that the server must have register_argc_argv enabled in PHP configuration. By manipulating the query string, the attacker influences how Laravel detects the current environment (e.g., local, production), potentially enabling debug modes or loading different configuration sets. [1][2]

Impact

Successful exploitation permits an attacker to force the application to run in an arbitrary environment. This could expose sensitive information (e.g., in debug output), bypass security restrictions, or cause the application to use development-only configuration that may include weaker security settings. The impact depends on how the application uses environment-specific behavior. [2]

Mitigation

The vulnerability has been patched in Laravel versions 6.20.45, 7.30.7, 8.83.28, 9.52.17, 10.48.23, and 11.31.0. The fix involves ignoring argv values for environment detection on non-CLI SAPIs, preventing the query string manipulation from affecting environment determination. Users are strongly advised to upgrade to the appropriate patched version. Additionally, disabling register_argc_argv on production servers can serve as a mitigation until upgrades are applied. [1][2]