Update Protection against Microsoft Windows LSASS Length Validation Privilege Escalation Vulnerability (MS11-014)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-081
Date Published:
Severity:
Source:	Microsoft Security Bulletin MS11-014
Industry Reference(s):	CVE-2011-0039
Protection Provided by:	Security Gateway R75 R71 R70 VPN-1 NGX R65 VSX NGX R65
Who is Vulnerable? 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)
Vulnerability Description An elevation of privilege vulnerability has been reported in the way that the Microsoft Windows Local Security Authority Subsystem Service (LSASS) processes specially crafted authentication requests. The Local Security Authority Subsystem Service (LSASS) provides an interface for managing local security, domain authentication, and Active Directory service processes. It handles authentication for the client and for the server. The vulnerability could allow an attacker to run code with elevated privileges. An attacker who successfully exploited this vulnerability could take complete control of an affected system.

Update/Patch Available Apply patches: Microsoft Security Bulletin MS11-014
Vulnerability Details The vulnerability is due to an error when the Windows LSASS processes a specially crafted authentication request. An attacker could run a specially crafted application that could exploit the issue. An attacker who successfully exploited this vulnerability could gain complete control over the affected system.

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/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 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 LSASS Length Validation Privilege Escalation (MS11-014) 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 LSASS length validation privilege escalation (MS11-014)

Security Gateway: R70/R71

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 Windows LSASS Length Validation Privilege Escalation (MS11-014) 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 LSASS length validation privilege escalation (MS11-014)

VPN-1 NGX R65 & VSX NGX R65

How Can I Protect My Network?
1. In the SmartDefense tab, click Application Intelligence > Content Protection > Microsoft Windows LSASS Length Validation Privilege Escalation (MS11-014).
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: Content Protection Violation
Attack Information: Microsoft Windows LSASS length validation privilege escalation (MS11-014)

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