CVE-2013-3496. Local privilege escalation vulnerability in Infotecs products (ViPNet Client\Coordinator, SafeDisk, Personal Firewall)

[chudakovma () gmail com]

CVE-2013-3496. Local privilege escalation vulnerability in Infotecs products (ViPNet Client\Coordinator, SafeDisk, 
Personal Firewall)
 
CVE reference:
CVE-2013-3496

Credit:
Maksim Chudakov (@MChudakov)
Andrey Kurtasanov(andreykurtasanov () gmail com)

Severity:
Medium

Local\Remote:
Local

Vulnerability Class:
Privilege Escalation

Vendor URL:
http://www.infotecs.biz/

Affected OS:
Windows

Vulnerable systems:
ViPNet Client 3.2.10 (15632) and prior
ViPNet Coordinator 3.2.10 (15632) and prior
ViPNet SafeDisk 4.1 (0.5643) and prior
VipNet Personal Firewall 3.1 and prior
Possibly same issues in other Infotecs products and other versions

Overview:
A local privilege escalation vulnerability exists in the Infotecs products (ViPNet Client, SafeDisk, Personal Firewall 
and possibly other products), which could be exploited by an attacker to execute commands on the affected machine under 
the context of the SYSTEM user or user with local administrative privileges.

Technical Background:
The vulnerability exists because Infotecs products installs to folder with insecure permissions. "Everyone" group has 
"Full Control" rights to the files/folders in the following path: "%Program Files%\Infotecs\[product_name]". It means 
that any unprivileged user can modify, delete or change permissions of any file in data the folder consists of data, 
executable and configuration files. 

Solution:
1) Request a patch from Vendor or
2) Go to every executable and dll file within a ViPNet folder and change permissions manually

Disclosure Timeline:
25/03/2013 Initial vendor notification
08/04/2013 Vendor response that patches has been released
20/05/2013 Advisory released