Check Point Advisories

Microsoft SharePoint W3WP Denial of Service (MS13-067; CVE-2013-0081)

Check Point Reference: CPAI-2013-2910
Date Published: 10 Sep 2013
Severity: High
Last Updated: Sunday 18 January, 2015
Source:
Industry Reference:CVE-2013-0081
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70
Who is Vulnerable?
Vulnerability Description A denial of service vulnerability exists in Microsoft SharePoint Server. The vulnerability is caused when Microsoft SharePoint does not properly handle starting an unassigned workflow. A remote attacker may exploit this issue by entering a specially crafted URL to a system running an affected version of SharePoint Server. An attacker who successfully exploited this vulnerability could cause the W3WP process on an affected version of SharePoint Server to terminate, causing the SharePoint site, and any other sites running under that process, to become unavailable until the process is restarted.

Protection Overview

This protection will detect and block attempts to send specially crafted URLs.

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, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75 / R71 / R70

  1. In the IPS tab, click Protections and find the Microsoft SharePoint W3WP Denial of Service (MS13-067) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Server Enforcement Violation.
Attack Information:  Microsoft SharePoint W3WP Denial of Service (MS13-067)

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