Check Point Advisories

Microsoft Windows RPC UPnP Memory Allocation Denial of Service (CVE-2005-3644)

Vulnerability
Protection

Check Point Reference:	CPAI-2005-330
Date Published:	17 Aug 2010
Severity:	Critical
Last Updated:	Tuesday 17 August, 2010
Source:
Industry Reference:	CVE-2005-3644
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Microsoft Windows Plug and Play (PnP) service allows new devices to be automatically recognized by the operating system. The PnP service is responsible for identifying a new device, and installing the necessary drivers in order to make it functional. The service is started automatically on all recent versions of the Windows operating system and is essential to proper system operation. This feature is implemented via a dynamically linked library. There exists a denial of service vulnerability in the Microsoft Windows Plug and Play service. A remote attacker may leverage this vulnerability by sending a crafted request to the problematic service. This may potentially result in the service using extensive amounts of memory and processor resources leading to a temporary denial of service condition. Upon receiving the malicious RPC requests, the vulnerable target system will consume all available virtual memory. The CPU resource and memory usage will reach full utilization for a limited amount of time. The target system will experience severe performance degradation for this period of time. The system will automatically recover from resource exhaustion after a period of time. If the attack is launched periodically, the target might be rendered into a permanent denial-of-service condition.

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 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

In the IPS tab, click Protections and find the Microsoft Windows RPC UPnP Memory Allocation Denial of Service protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: MS-RPC Enforcement Violation.
Attack Information: Microsoft Windows RPC UPnP memory allocation denial of dervice