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Update Protection against Microsoft SharePoint Help Page Denial of Service Vulnerability (MS10-039)

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Check Point Reference: CPAI-2010-200
Date Published:
Severity:
Last Updated:
Source: Microsoft Security Bulletin MS10-039
Industry Reference(s): CVE-2010-1264
Protection Provided by: Security Gateway
  • R71
  • R70
IPS-1
  • IPS-1
  • IPS-1 NGX R65
Who is Vulnerable?
Microsoft Office SharePoint Server 2007 SP1
Microsoft Office SharePoint Server 2007 SP2 (32-bit editions)
Microsoft Office SharePoint Server 2007 SP1
Microsoft Office SharePoint Server 2007 SP2 (64-bit editions)
Vulnerability Description
A denial of service vulnerability has been discovered in Microsoft SharePoint Server 2007. Windows SharePoint Services provide a platform for collaboration applications and document management. Office SharePoint Server is an integrated suite of server capabilities built on top of Windows SharePoint Services. A remote attacker may exploit this vulnerability to cause the Web server to become non-responsive.
Update/Patch Available
Update patches:
Microsoft Security Bulletin MS10-039
Vulnerability Details
The vulnerability is due to the way that Microsoft SharePoint handles specially crafted requests sent to the Help page. A remote attacker can exploit this issue by sending a maliciously crafted HTTP request to the Help page of the SharePoint server. Successful exploitation of this vulnerability could allow the attacker to create a denial of service condition.

Protection Overview
This protection will detect and block malicious HTTP requests made to the vulnerable SharePoint server.

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/R71

How Can I Protect My Network?
1. In the IPS tab, click Protections > By Protocol > Web Intelligence > Application Layer.
2. In the right pane, double-click the Microsoft SharePoint Help Page Denial of Service (MS10-039) 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: SharePoint Enforcement Violation
Attack Information: Microsoft SharePoint help page denial of service (MS10-039)

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 Web Intelligence > WWW 2, and select the IIS Attacks protection group.
3. Click Microsoft IIS/SharePoint Denial of Service (MS10-040) (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: Attacks against IIS web servers
Description: Microsoft IIS/SharePoint Denial of Service (MS10-040)