Update Protection against Microsoft SMB Server Race Condition Denial of Service Vulnerability (MS10-012)

Vulnerability
Protection

Check Point Reference:	CPAI-2010-023
Date Published:
Preemptive Since:
Severity:
Source:	Microsoft Security Bulletin MS10-012
Industry Reference(s):	CVE-2010-0021
Protection Provided by:	Security Gateway R70 VPN-1 NGX R65 VSX NGX R65 IPS-1 IPS-1 IPS-1 NGX R65
Who is Vulnerable? 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 for (Itanium) Windows Server 2008 for (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 for (Itanium)
Vulnerability Description A denial of service vulnerability has been reported in the Microsoft Windows Server Message Block (SMB) implementation. The SMB Protocol is a network file sharing protocol that is implemented in Microsoft Windows. A remote attacker may exploit this vulnerability to create a denial of service condition.

Update/Patch Available Apply patches: Microsoft Security Bulletin MS10-012
Vulnerability Details The vulnerability is due to a race condition in a driver that is part of the SMB stack in Windows. A remote attacker could exploit this flaw via a specially crafted SMB request. Successful exploitation could cause a denial of service condition on the target system.

Protection Overview
This protection will detect and block malformed SMB requests attempting to exploit this vulnerability. IPS-1 has been preemptive against this vulnerability since November 16, 2009. No update is required for IPS-1 users.

In order for the protection to be activated, update your Security Gateway/VPN-1 product to the latest IPS/SmartDefense update. For information on how to update IPS/SmartDefense, 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 > Microsoft Networks.
2. In the right pane, double-click the following protection:

Microsoft SMB Server Race Condition Denial of Service (MS10-012)

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: Windows SMB Protection Violation
Attack Information: Microsoft SMB server race condition denial of service (MS10-012)

VPN-1 NGX R65 & VPN-1 VSX NGX R65

How Can I Protect My Network?
1. In the SmartDefense tab, click Application Intelligence > Microsoft Networks > Microsoft SMB Server Race Condition Denial of Service (MS10-012).
2. In the configuration pane, under Settings > Mode, check Active.
3. Install policy on all modules.

IPS-1 & IPS-1 NGX R65

How Can I Protect My Network?

1. In the IPS-1 Policy Manager, click on the Protection tab.
2. In the Protection tree, click Network Security > SMB, and select the SMB Compliance protection group.
3. Click Microsoft SMB Endless Loop Denial of Service (IPS-1 NGX R65 only).
4. In the configuration pane, under Settings, check Active.
5. Click on Install Policy.

How Do I Know if My Network is Under Attack?

Upon attack, the following entries will be logged:

Alert Name: SMB Compliance
Description: Microsoft SMB Endless Loop Denial of Service

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