cat > /var/www/html/vendor/.htaccess <<EOF Order Deny,Allow Deny from all EOF
This article provides a comprehensive overview of the index of vendor phpunit phpunit src util php eval-stdin.php security issue, covering what it is, how it is exploited, and how to protect your web applications. What is vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php ?
When navigating through the directories of a PHP project, you might stumble upon an "Index of" error or listing, particularly when accessing a URL or path directly. This often occurs when a server doesn't have directory indexing enabled or when there's a misconfiguration. However, the specific path vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php raises questions about its purpose within the PHPUnit framework. index of vendor phpunit phpunit src util php eval-stdin.php
If you’ve ever come across a web directory listing showing a path like vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php , you may have stumbled upon a critical security vulnerability. This article dives deep into what this file is, why its exposure is dangerous, how attackers abuse it, and—most importantly—how to protect your PHP applications.
eval('?>' . file_get_contents('php://stdin')); cat > /var/www/html/vendor/
This script was removed in later versions of PHPUnit (from version 6.x onward), but remains present in older versions (PHPUnit 4.x, 5.x, and some 6.x betas) that are still in use in legacy projects.
| Attack Vector | Impact | |---------------|--------| | Direct HTTP POST request | Arbitrary code execution | | Chained with file upload or LFI | Escalate to system compromise | | Automated scanners (e.g., Nuclei, wpscan) | Mass exploitation | This often occurs when a server doesn't have
that allows remote code execution (RCE). This vulnerability occurs when the eval-stdin.php file is exposed to the public internet, often because the folder is web-accessible. National Institute of Standards and Technology (.gov) Understanding the Vulnerability eval-stdin.php
: The script eval-stdin.php uses file_get_contents('php://input') to read the body of a POST request and passes it directly to eval() . This allows an attacker to execute arbitrary PHP code without any authentication.