# On development/staging: composer install
<?php
The search query "index of vendor phpunit phpunit src util php eval-stdin.php" refers to a critical vulnerability, officially tracked as CVE-2017-9841 . This flaw is frequently targeted by automated scanners and malware like Androxgh0st to gain unauthorized access to web servers. Vulnerability Overview
The primary fix is to update PHPUnit to a patched version (4.8.28+ or 5.6.3+) via Composer. Run composer update phpunit/phpunit . index of vendor phpunit phpunit src util php eval-stdin.php
<?php system('id'); ?>
That single line reads anything from php://stdin and executes it as PHP code using eval() . When PHPUnit is run from the command line, this script is used internally to spawn subprocesses for isolated test execution. The problem arises when an attacker can . Because there are no authentication or permission checks, an HTTP request that includes arbitrary PHP code in the request body will cause the server to execute it with the privileges of the web server user.
function that can be triggered via a simple HTTP POST request. National Institute of Standards and Technology (.gov) # On development/staging: composer install <
In versions of PHPUnit before and 5.x before 5.6.3 , the file eval-stdin.php was included in the source code to help execute tests. However, it contains a dangerous line of code that reads raw data from an HTTP POST request and executes it directly as PHP code. PHPUnit.Eval-stdin.PHP.Remote.Code.Execution
<?php declare(strict_types=1); /* * This file is part of PHPUnit. * * (c) Sebastian Bergmann <sebastian@phpunit.de> */ if (defined('STDIN')) eval(file_get_contents('php://stdin'));
Your document root should point to a public/ or web/ directory that contains only entry point files (e.g., index.php , assets/ ). The vendor/ folder should live the document root. Example structure: Run composer update phpunit/phpunit
During normal development, this file helps PHPUnit spawn subprocesses that run isolated test cases. But when exposed to the internet, it becomes a trivial backdoor: an attacker can send arbitrary PHP code and have it executed directly on the server.
composer require --dev phpunit/phpunit:^9.0 # or newer
PHPUnit is the de facto standard testing framework for the PHP programming language. It allows developers to write unit tests to ensure their code behaves as expected before deploying it to production environments. The Purpose of eval-stdin.php
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)
Add a location block to your server configuration: location /vendor/ deny all; return 404; Use code with caution. 5. Update PHPUnit