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

Update Protection against Microsoft WinVerifyTrust Signature Validation Security Bypass Vulnerability (MS10-019)

Subscribe

Check Point Reference: CPAI-2010-073
Date Published:
Severity:
Source: Microsoft Security Bulletin MS10-019
Industry Reference(s): CVE-2010-0486
Protection Provided by: Security Gateway
  • R70
Who is Vulnerable?
Microsoft Windows 2000 SP4
Windows XP SP2
Windows XP SP3
Windows XP Professional x64 Edition SP2
Windows Server 2003 SP2
Windows Server 2003 x64 Edition SP2
Windows Server 2003 with SP2 (Itanium)
Windows Vista
Windows Vista SP1
Windows Vista SP2
Windows Vista x64 Edition
Windows Vista x64 Edition SP1
Windows Vista x64 Edition SP2
Windows Server 2008 for 32-bit Systems
Windows Server 2008 for 32-bit Systems SP2
Windows Server 2008 for x64-based Systems
Windows Server 2008 for x64-based Systems SP2
Windows Server 2008 (Itanium)
Windows Server 2008 (Itanium) SP2
Windows 7 for 32-bit Systems
Windows 7 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 (Itanium)
Vulnerability Description
A remote code execution vulnerability has been discovered in the Windows Authenticode Signature Verification function used for portable executable (PE) and cabinet file formats. A cabinet is a single file, usually suffixed with .CAB, that stores compressed files in a file library. A compressed file can be spread over several cabinet files. During installation, the setup application decompresses the files stored in a cabinet and copies them to the user's system. A remote attacker could exploit this vulnerability via a specially crafted signed PE or cabinet file. Successful exploitation of this vulnerability may allow execution of arbitrary code on a target system.
Update/Patch Available
Apply patches:
Microsoft Security Bulletin MS10-019
Vulnerability Details
The vulnerability is caused when the Windows Authenticode Signature Verification function omits fields from the file digest when signing and verifying a PE or cabinet file. An attacker can exploit this flaw to execute arbitrary code on a vulnerable system via a malicious PE or CAB file. Successful exploitation may allow the attacker to take complete control of a target system.

Protection Overview
This protection will detect and block the transferring of executable files, signed with weak legacy digital signature, over HTTP.

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 R70

How Can I Protect My Network?
1. In the IPS tab, click Protections > By Protocol > Application Intelligence > Content Protection.
2. In the right pane, double-click the Microsoft WinVerifyTrust Signature Validation Security Bypass (MS10-019) 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 WinVerifyTrust signature validation security bypass (MS10-019)