The string refers to a Remote Code Execution (RCE) vulnerability in , specifically tracked as CVE-2017-9841
, your site is being actively scanned for one of the most famous "low-hanging fruit" vulnerabilities in PHP history. What is the Vulnerability? The issue lies in the eval-stdin.php file, which was included in PHPUnit versions before . The code in these versions used on the content of php://input , essentially inviting anyone on the internet to send a index of vendor phpunit phpunit src util php evalstdinphp
evaluate method to avoid using eval.Given these elements, here are a few possible interpretations: The string refers to a Remote Code Execution
The EvalStdin.php file in the PHPUnit framework provides a utility method for evaluating PHP code from STDIN. However, the use of eval in this method introduces significant security risks. To ensure the security and integrity of the system, it is essential to follow best practices, such as avoiding eval, validating and sanitizing input, and limiting privileges. If possible, consider alternative approaches that do not involve evaluating user-supplied input as PHP code. Refactor the evaluate method to avoid using eval
Example exploit using curl:
The vulnerability in vendor/phpunit/phpunit/src/Util/PHP/EvalStdin.php serves as a textbook example of CWE-434: Unrestricted Upload of File with Dangerous Type and CWE-306: Missing Authentication for Critical Function.
composer update), leaving production environments running PHPUnit versions from 4.x or 5.x.vendor directory in their web server configuration (a common oversight), the site is vulnerable.