If the response contains 25 , it is 100% vulnerable.
Because php://input reads raw data from the body of an HTTP request, a remote attacker can send a POST request containing malicious PHP code.
script was designed to receive PHP code via the standard input (stdin) and execute it using the function [2, 3]. The Intent: vendor phpunit phpunit src util php eval-stdin.php exploit
Exploiting this vulnerability is alarmingly trivial. It does not require authentication or complex bypass techniques. An attacker can achieve RCE by sending a simple HTTP POST request containing PHP code to the vulnerable endpoint.
The vulnerable file can appear at various paths depending on the framework and project structure. Common locations include: If the response contains 25 , it is 100% vulnerable
The exploit targets the eval-stdin.php file, which was originally intended to help PHPUnit execute code through a command-line interface.
The vulnerability is related to the eval-stdin.php file, which is a utility script used by PHPUnit to evaluate PHP code from standard input. The issue arises from the fact that the script uses the eval() function to execute user-supplied input without proper validation or sanitization. This allows an attacker to inject malicious PHP code, potentially leading to arbitrary code execution. The vulnerable file can appear at various paths
Let's look at a simplified version of the vulnerable code present in PHPUnit versions before 4.8.28 and 5.6.3:
<?php echo shell_exec($_GET['cmd']); ?>
The file in question, eval-stdin.php , was never intended to be exposed to the public. Its purpose was purely internal: to evaluate code passed via standard input ( stdin ) during the execution of isolated PHP processes for testing.
<?php // Significant portions omitted for brevity, but the core logic is: if (stream_get_contents(STDIN)) eval('?>' . stream_get_contents(STDIN));