composer install --no-dev --optimize-autoloader
If the server returns the word Test , the file is present and executable. In that case, assume the server is already compromised.
if (!defined('STDOUT')) // script dies if not in CLI mode index of vendor phpunit phpunit src util php eval-stdin.php
The vendor/ folder should never be directly accessible from the web. Add rules to deny access:
for legacy vulnerabilities. They are checking to see if you have an outdated, exposed directory that they can exploit. How to secure your project Add rules to deny access: for legacy vulnerabilities
$ echo "<?php echo 'Hello, World!';" | php vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php
Assume your site is at /var/www/html . Here’s a complete cleanup: Here’s a complete cleanup: Its original purpose was
Its original purpose was strictly for testing. It accepts PHP code via standard input ( STDIN ) and evaluates it using eval() . The entire source code of the file (in vulnerable versions) is remarkably short:
Here is a comprehensive breakdown of what this vulnerability means, how attackers exploit it, and how to secure your server. What is CVE-2017-9841?