Index Of Vendor Phpunit Phpunit Src Util Php Eval-stdin.php Patched -
$ echo "<?php echo 'Hello, World!';" | php vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php
via .htaccess (Apache) or Nginx config:
This code takes the raw body of an HTTP POST request and evaluates it as PHP code. Why is "index of vendor..." a Danger Sign?
However, if a web server (such as Apache or Nginx) serves this file, a malicious actor can send an HTTP POST request directly to this file. The body of the POST request is treated as the input stream.
If you have already deployed your application, you should not be using composer install without the --no-dev flag. Remove the vendor folder and reinstall without dev dependencies: rm -rf vendor composer install --no-dev Use code with caution. 3. Block Access via .htaccess (Apache) index of vendor phpunit phpunit src util php eval-stdin.php
| 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 |
If you find this file exposed on your system, take the following steps immediately to secure your infrastructure. 1. Remove Development Dependencies from Production
Here is what the vulnerable code essentially looked like:
The original code of eval-stdin.php is deceptively simple: $ echo "<
In a PHP project that uses Composer, a dependency manager for PHP, the vendor directory plays a vital role. Composer is used to manage dependencies, which are libraries or packages that a project relies on. When a project is set up with Composer, it creates a vendor directory where all the dependencies are installed.
eval-stdin.php is a PHP script that was historically included in older versions of PHPUnit (notably versions 4.x and 5.x). Its purpose is simple: it reads input from the standard input (STDIN) and evaluates it as PHP code using the eval() function.
Because attackers and researchers alike are constantly scanning for vulnerable endpoints, search engines like Google or Bing often index these directory listings. A query for intitle:"index of" "eval-stdin.php" will return numerous compromised servers. This is a goldmine for black‑hat hackers—but also a wake‑up call for system administrators.
A: The Eval-Stdin.php file enables PHPUnit to execute tests that require dynamic code evaluation, ensuring reliable and safe test execution. The body of the POST request is treated as the input stream
The vendor/ folder is managed by Composer (the PHP package manager). PHPUnit is a development tool and should never be deployed to a live production server.
However, in older versions of PHPUnit (specifically before 4.8.28 and 5.x before 5.6.3), this script was improperly exposed in the vendor directory, making it accessible via HTTP requests. The Security Vulnerability: CVE-2017-9841
Let’s decode the path:
If you find this file in your /vendor folder or see related access logs, take the following steps immediately: