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Update Protection against Microsoft SMB Server Null Pointer Denial of Service Vulnerability (MS10-012)

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Check Point Reference: CPAI-2010-028
Date Published:
Preemptive Since:
Severity:
Source: Microsoft Security Bulletin MS10-012
Industry Reference(s): CVE-2010-0022
Protection Provided by: Security Gateway
  • R70
VPN-1
  • NGX R65
VSX
  • NGX R65
IPS-1
  • IPS-1
  • IPS-1 NGX R65
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 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 insufficient validation by the Microsoft SMB Protocol software of the share and servername fields in malformed SMB packets. A remote attacker could exploit this flaw by constructing a specially crafted SMB packet and sending it to a target server. Successful exploitation could cause a denial of service condition on the affected system.

Protection Overview
This protection will detect and block malformed SMB requests attempting to exploit this vulnerability. IPS-1 has been preemptive against this vulnerabililty since January 9, 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 Null Pointer 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 null pointer 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 Null Pointer Denial of Service (MS10-012).
2. In the configuration pane, under Settings > Mode, check Active.
3. 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 null pointer denial of service (MS10-012)

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 Samba protection group.
3. Click Samba Root File System Access Security Bypass (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 entry will be logged:

Alert Name: Samba
Description: Samba Root File System Access Security Bypass