This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.

The directory listing or exposure of index of /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php points to a severe, historically critical security vulnerability. This path is tied to CVE-2017-9841, a Remote Code Execution (RCE) flaw in PHPUnit, a popular testing framework for the PHP programming language.

PHP Unit 4.8.28 - Remote Code Execution (RCE ... - Exploit-DB

The core of this issue is a remote code execution (RCE) vulnerability identified as . This security flaw existed in the eval-stdin.php script of PHPUnit, a popular framework for automated testing in PHP [6†L2-L3]. The vulnerability affects PHPUnit versions before 4.8.28 and the 5.x series before 5.6.3 [6†L3-L4]. It earned a critical CVSS v3 score of 9.8 due to its ease of exploitation and devastating potential for a full system compromise [7†L24].

(for on-demand testing), move it outside the public web root (e.g., to /usr/local/phpunit or a directory not served by your web server).

: The specific helper script responsible for taking an input stream and evaluating it as live PHP code. The Mechanism of CVE-2017-9841

The stream wrapper php://input reads raw data directly from the body of an HTTP POST request. When an application's root web directory incorrectly includes the vendor folder, an unauthenticated remote attacker can submit a standard web request directly to this file:

The file typically contains logic similar to this simplified snippet:

If a system is vulnerable, the impact is .

The code inside this file essentially calls eval() on user input: eval(file_get_contents('php://stdin')); Use code with caution.

: The script reads raw PHP code from a POST request and executes it on the server without any authentication.