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Update Protection against Microsoft License Logging Server RPC Call Heap Overflow Vulnerability (MS09-064)

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Check Point Reference: CPAI-2009-286
Date Published:
Severity:
Last Updated:
Source: Microsoft Security Bulletin MS09-064
Industry Reference(s): CVE-2009-2523
Protection Provided by: Security Gateway
  • R70
VPN-1
  • NGX R65
VSX
  • NGX R65
InterSpect
  • NGX
IPS-1
  • IPS-1
  • IPS-1 NGX R65
Who is Vulnerable?
Microsoft Windows 2000 SP4
Vulnerability Description
A remote code execution vulnerability has been discovered in the way that the Microsoft License Logging Server software handles specially crafted RPC packets. The License Logging service is a tool that was originally designed to help customers manage licenses for the Microsoft server products that are licensed in the Server Client Access License (CAL) model. License Logging service is one of the services used by Windows Small Business Server 2003 or earlier to manage CALs. A remote attacker could exploit this issue to execute arbitrary code on a target system via a specially crafted RPC request.
Update/Patch Available
Apply patches:
Microsoft Security Bulletin MS09-064
Vulnerability Details
The vulnerability is due to an error in the License Logging service that fails to validate the length of a string passed to it through an RPC call. This results in a buffer overflow on the heap. A remote attacker could exploit this vulnerability by sending a specially crafted network message to a computer running the License Logging service. Successful exploitation of this issue could allow the attacker to take complete control of the system.

Protection Overview
This protection will detect and block malformed RPC requests to the License Logging service.

In order for the protection to be activated, update your Security Gateway/VPN-1/InterSpect 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 > MS-RPC > MS-RPC over CIFS.
2. In the right pane, double-click the Microsoft License Logging Server RPC Call Heap Overflow (MS09-064) 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: MS-RPC Enforcement Violation
Attack Information: Microsoft License Logging Server RPC call heap overflow (MS09-064)

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

How Can I Protect My Network?
1. In the SmartDefense tab, click Application Intelligence > MS-RPC > MS-RPC over CIFS > Microsoft License Logging Server RPC Call Heap Overflow (MS09-064).
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: MS-RPC Enforcement Violation
Attack Information: Microsoft License Logging Server RPC call heap overflow (MS09-064)

InterSpect NGX

How Can I Protect My Network?
1. In the left pane, select Profiles > Default Protection and select the SmartDefense page of the profile.
2. In the SmartDefense tree, click Application Intelligence > MS-RPC > MS-RPC over CIFS.
3. Select the following:

Microsoft License Logging Server RPC Call Heap Overflow (MS09-064)

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: MS-RPC Enforcement Violation
Attack Information: Microsoft License Logging Server RPC call heap overflow (MS09-064)

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 Application Intelligence > MS-RPC, and select the LLS License protection group.
3. Click Microsoft License Logging Server RPC Call Heap Overflow (MS09-064) (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: LLSRLicense
Description: Microsoft License Logging Server RPC Call Heap Overflow (MS09-064)