eval('?>' . file_get_contents('php://stdin'));
testing framework when it is accidentally deployed to production environments with its directory publicly accessible. Vulnerable Function : The file eval-stdin.php contained the following code: eval('?> '. file_get_contents('php://input')); : It reads raw data from the HTTP POST body ( php://input ) and passes it directly into the function without any authentication or sanitization. : An attacker can execute arbitrary PHP code (e.g., system("id");
<?php system('id'); ?>
The script reads raw POST data from php://stdin , checks if it starts with <?php , and then executes everything after it. An attacker can exploit this by crafting a POST request:
CVE-2017-9841 is a critical, easily exploitable vulnerability that has been used in devastating real-world attacks. The flaw's simplicity—an exposed eval() function on a public-facing script—underscores a fundamental security principle: . vendor phpunit phpunit src util php eval-stdin.php cve
if the server was previously vulnerable.
The following PHPUnit versions are affected: eval('
:
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 flaw's simplicity—an exposed eval() function on a
This vulnerability exists in the eval-stdin.php file, which is part of the testing framework. The script was designed to process input for unit tests but was inadvertently left with a major security flaw: it uses eval() on raw data from the php://input wrapper.