curl -X POST -d '' http://target-site.com Use code with caution.
: Shipping development dependencies (like PHPUnit) to production environments rather than using composer install --no-dev vulhub/phpunit/CVE-2017-9841/README.md at master - GitHub
Organizations can mitigate this vulnerability through several vectors: vendor phpunit phpunit src util php eval-stdin.php exploit
refers to a critical Remote Code Execution (RCE) vulnerability tracked as CVE-2017-9841
For :
This deep-dive analysis covers the mechanics of the exploit, the underlying source code flaw, how automated scanners look for it, and robust remediation strategies. Understanding the Vulnerability Architecture
Never install dev dependencies in production. curl -X POST -d ' ' http://target-site
The script reads anything sent to STDIN (standard input) and passes it directly to eval() . In a CLI (command-line interface) environment, this is safe because only authorized users have shell access. However, when this file is placed in a web-accessible directory, an attacker can use the php://input wrapper or a POST request body to supply the STDIN data.
Run this command from your project root to see if you are vulnerable: The script reads anything sent to STDIN (standard
In a web environment, php://stdin corresponds to the HTTP POST request body. Consequently, any HTTP POST request sent to this file — with a body beginning with <?php — would be blindly executed by the server.