Home Page | Skip to Navigation | Skip to Content | Skip to Search | Skip to Footer

Update Protection against Microsoft Windows Explorer Invalid URL File Parsing Stack Overflow

Subscribe

Check Point Reference: CPAI-2006-260
Date Published:
Severity:
Last Updated:
Source: SecurityFocus Bugtraq ID: 18838
Industry Reference(s): CVE-2006-3351
Protection Provided by: Security Gateway
  • R75
Who is Vulnerable?
Microsoft Windows 2000
Microsoft Windows XP
Microsoft Windows Server 2003
Vulnerability Description
The Microsoft Windows series of operating systems is one of the most popular systems in use on workstations, home computers, and servers. All versions of the OS include a graphical shell interface, called Windows Explorer.
Vulnerability Details
There exists a stack exhaustion vulnerability in Microsoft Windows Explorer. The flaw is caused by the improper parsing of URL strings contained within a .url file. An attacker can exploit this vulnerability by enticing a user to open a crafted .url file, resulting in abnormal termination of the affected program.
The target application will usually terminate immediately as a result of an attack attempt. If the malicious file is stored on the Desktop of the active user, the application will continually read the file and terminate. In most cases, this renders the Windows operating system unusable until the file is manually removed.

Protection Overview
This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, Protection tab and select the version of your choice.

To configure the defense, select your product from the list below and follow the related protection steps.

Security Gateway R75

How Can I Protect My Network?
1. In the IPS tab, click Protections > By Protocol > IPS Software Blade > Application Intelligence > Content Protection.
2. In the right pane, double-click the Microsoft Windows Explorer Invalid URL File Parsing Stack Overflow protection.
3. In the Protection Details window, click on Edit. Choose the protection's Action (Override IPS Policy with: Prevent/Detect), and apply Additional Settings.
4. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:

Attack Name: Content Protection Violation
Attack Information: Microsoft Windows Explorer invalid URL file parsing stack overflow