Vendor Phpunit Phpunit Src Util Php Eval-stdin.php Cve — Bonus Inside

A proof-of-concept exploit has been publicly disclosed, demonstrating how an attacker can execute arbitrary code on a vulnerable system. The exploit involves providing malicious input to the eval-stdin.php script, which is then executed by the vulnerable PHPUnit instance.

PHPUnit is one of the most widely used testing frameworks for PHP, with over 100 million downloads. As a crucial component of the PHP ecosystem, ensuring its security is paramount. Recently, a critical vulnerability was discovered in PHPUnit, which allows attackers to execute arbitrary code on vulnerable systems. This article provides an in-depth analysis of the vulnerability, its impact, and steps to mitigate it. vendor phpunit phpunit src util php eval-stdin.php cve

The vulnerability, identified as CVE-2022-0847, affects PHPUnit versions prior to 9.5.0. It resides in the util.php file within the src directory of PHPUnit, specifically in the eval-stdin.php script. This script is used to evaluate PHP code from standard input. As a crucial component of the PHP ecosystem,

POST /vendor/phpunit/phpunit/src/util/php/eval-stdin.php HTTP/1.1 Host: vulnerable-system.com Content-Type: application/x-www-form-urlencoded making the vulnerability particularly severe.

To obtain the patch, update your PHPUnit installation to version 9.5.0 or later using Composer:

Vulnerable

The vulnerability arises from the fact that the eval-stdin.php script does not properly sanitize user input. An attacker can exploit this by providing malicious input, which will be executed on the server without proper validation. This allows for arbitrary code execution, making the vulnerability particularly severe.