Php 5.3.10 Exploit | HOT – REVIEW |

When PHP is run in CGI mode (using php-cgi ), the web server passes request data to the PHP binary via command-line arguments. Normally, a request to index.php translates to:

However, the RCE payload is specific. Spaces are not allowed in URLs naturally, so they must be replaced with + or %20 . php 5.3.10 exploit

Disclaimer: This post is for educational purposes and authorized security testing only. Exploiting systems you do not own is illegal. When PHP is run in CGI mode (using

While modern PHP versions (8.x) are not vulnerable, countless legacy systems, old routers, IoT devices, and forgotten shared hosting environments still run this version. Today, we are going to dissect —the PHP CGI Argument Injection exploit. The Vulnerability: What went wrong? To understand the exploit, you must understand CGI (Common Gateway Interface) . Disclaimer: This post is for educational purposes and

/usr/bin/php-cgi /path/to/index.php The bug occurred in how PHP parsed the query string. If an attacker sent a request without a script name (e.g., http://target.com/?-s ), the PHP engine would misinterpret the query string .

/usr/bin/php-cgi -s Because there is no script specified, PHP defaults to showing the source code of the standard input (the HTTP body). By sending a request with ? and -s , the attacker effectively turns the server into a file reader.