Automated scanners use search queries (like the one in the title of this article) to find open directories listing the PHPUnit path. Step-by-Step Remediation
Disclaimer: This article is for educational purposes. Always test security changes in a staging environment. If you want me to, I can:
This protects not only eval-stdin.php but also countless other test files, .git folders, and configuration examples that may be present.
eval-stdin.php is a PHP script that comes bundled with PHPUnit. Its primary function is to read PHP code from standard input (stdin) and evaluate it. This utility is particularly useful when you need to execute PHP code dynamically during testing. Automated scanners use search queries (like the one
Give you for your server setup (Apache, Nginx, or Docker). Provide a check-list for hardening your PHP application. Suggest tools to test if your fix is working.
refers to a critical Remote Code Execution (RCE) vulnerability known as CVE-2017-9841 . This vulnerability arises when the directory of a PHP project—specifically the
: Never commit your vendor folder to version control. If you want me to, I can: This
: If STDIN is empty, eval('?>') does nothing — not a problem.
https://yourdomain.com/vendor/phpunit/phpunit/src/Util/PHP/
If eval-stdin.php is directly accessible via a URL (e.g., ://example.com ), it can be used to execute arbitrary PHP code on your server [1]. The Attack Vector This utility is particularly useful when you need
testing framework—is left publicly accessible on a web server. The CVE-2017-9841 Vulnerability Vulnerability Type: Unauthenticated Remote Code Execution (RCE). Target File: /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php Root Cause: eval-stdin.php script was designed to process code via standard input ( ). However, in vulnerable versions, it used file_get_contents('php://input') coupled with
An attacker might send the following HTTP request to the vulnerable endpoint:
: A Google dork used to find web servers with directory listing enabled, allowing anyone to browse files.