. Configure your web server to block access to /vendor/ .
As a defense-in-depth measure, explicitly block access to the vendor directory in your web server configuration. location /vendor deny all; return 404; Use code with caution. Summary Table: CVE-2017-9841 CVE ID CVE-2017-9841 Severity Critical (9.8) File Path vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php Vulnerable Versions < 4.8.28, < 5.6.3 Action Update PHPUnit & composer install --no-dev vendor phpunit phpunit src util php eval-stdin.php cve
The original code used a dangerous combination of functions: eval('?> ' . file_get_contents('php://input')); Use code with caution. Copied to clipboard location /vendor deny all; return 404; Use code with caution
vendor/phpunit/phpunit src/util/php/eval-stdin.php a lethal combination of unauthenticated access
The string vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php represents one of the most heavily targeted files in web security history. Cataloged as , this critical remote code execution (RCE) vulnerability continues to dominate global malicious threat scanning logs. Despite its age, a lethal combination of unauthenticated access, trivial exploitation, and systemic deployment flaws keeps this flaw highly relevant for modern security teams. Anatomy of the Vulnerability
Several open-source tools can help you scan for this vulnerability at scale:
POST /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php HTTP/1.1 Host: victim.com Content-Type: application/x-www-form-urlencoded
