Vulnerability Alert

Microsoft Windows win32k Kernel Driver Message Handling Privilege Escalation Vulnerability

 
Threat Type:CWE-119: Buffer Errors
IntelliShield ID:27739
Version:3
First Published:2013 January 08 18:13 GMT
Last Published:2013 July 30 13:59 GMT
Port: Not available
CVE:CVE-2013-0008
Urgency:Possible use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:6.8 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:5.6
 
Version Summary:Functional code that demonstrates an exploit of the Microsoft Windows win32k Kernel driver message handling privilege escalation vulnerability is publicly available.
 
 
Description
Microsoft Windows contains a vulnerability that could allow an local attacker to gain elevated privileges.

The vulnerability is due to improper handling of window broadcast messages by the affected software. A local attacker could exploit the vulnerability by convincing a user to run a crafted application. A successful exploit could allow the attacker to execute arbitrary code with the elevated privileges of the Windows kernel.

Functional code that exploits this vulnerability is available as part of the Metasploit framework.

Microsoft confirmed the vulnerability in a security bulletin and released software updates.
 
Warning Indicators
The following Microsoft platforms are affected:
  • Windows Vista SP2
  • Windows Vista x64 Edition SP2
  • Windows Server 2008 for 32-bit Systems SP2
  • Windows Server 2008 for x64-based Systems SP2
  • Windows Server 2008 for Itanium-based Systems SP2
  • Windows 7 for 32-bit Systems SP1 and prior
  • Windows 7 for x64-based Systems SP1 and prior
  • Windows Server 2008 R2 for x64-based Systems SP1 and prior
  • Windows Server 2008 R2 for Itanium-based Systems SP1 and prior
  • Windows 8 for 32-bit Systems
  • Windows 8 for x64-based Systems
  • Windows Server 2012
  • Windows RT
 
IntelliShield Analysis
To exploit this vulnerability, an attacker must have valid login credentials and log in locally to a targeted system. Because of these access requirements, an attacker may use further social engineering techniques to convince a user to run a malicious program to trigger this vulnerability.

Microsoft has corrected this vulnerability by modifying the way the Windows kernel-mode driver handles window broadcast messages.

The Cisco Applied Intelligence team has created an Applied Mitigation Bulletin to address vulnerabilities that Microsoft disclosed in the January 2013 security bulletin release. This Cisco bulletin, which assists administrators in identifying or mitigating these vulnerabilities using Cisco devices, is available at the following link: Cisco Applied Mitigation Bulletin: Microsoft Security Bulletin Release for January 2013
 
Vendor Announcements
Microsoft has released a security bulletin at the following link: MS13-005
 
Impact
A local attacker could exploit this vulnerability to execute arbitrary code on the local system with the elevated privileges of the Windows kernel, possibly resulting in a complete system compromise.
 
Technical Information
The vulnerability is due to improper handling of window broadcast messages by the affected software.

A local attacker could exploit this vulnerability by convincing a user to run a malicious program that is designed to send malicious input to the Windows kernel driver. The processing of the malicious input could cause errors that the attacker could use to execute arbitrary code on the vulnerable system with the elevated privileges of the Windows kernel.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to access local systems.

Administrators may consider using the Microsoft Baseline Security Analyzer (MBSA) scan tool to identify common security misconfigurations and missing security updates on system endpoints.

Administrators are advised to monitor affected systems.
 
Patches/Software
Microsoft customers can obtain updates directly by using the links in the security bulletin. These updates are also distributed by Windows automatic update features and available on the Microsoft Update service. Microsoft Windows Server Update Services (WSUS), Systems Management Server, and System Center Configuration Manager can assist administrators in deploying software updates.
 
Alert History
 
Version 2, February 8, 2013, 11:49 AM: Proof-of-concept code that demonstrates an exploit of the Microsoft Windows win32k Kernel driver message handling privilege escalation vulnerability is publicly available.

Version 1 January 8, 2013, 1:13 PM: Microsoft Windows contains a vulnerability that could allow a local attacker to elevate privileges. Updates are available.


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
Microsoft, Inc.Windows 7 for 32-bit systems Base, SP1 | for x64-based systems Base, SP1
Microsoft, Inc.Windows RT Original Release Base
Microsoft, Inc.Windows Server 2008 Datacenter Edition SP2 | Datacenter Edition, 64-bit SP2 | Itanium-Based Systems Edition SP2 | Enterprise Edition SP2 | Enterprise Edition, 64-bit SP2 | Essential Business Server Standard SP2 | Essential Business Server Premium SP2 | Essential Business Server Premium, 64-bit SP2 | Standard Edition SP2 | Standard Edition, 64-bit SP2 | Web Server SP2 | Web Server, 64-bit SP2
Microsoft, Inc.Windows Server 2008 R2 x64-Based Systems Edition Base, SP1 | Itanium-Based Systems Edition Base, SP1
Microsoft, Inc.Windows Server 2012 Original Release Base
Microsoft, Inc.Windows Vista Home Basic SP2 | Home Premium SP2 | Business SP2 | Enterprise SP2 | Ultimate SP2 | Home Basic x64 Edition SP2 | Home Premium x64 Edition SP2 | Business x64 Edition SP2 | Enterprise x64 Edition SP2 | Ultimate x64 Edition SP2
Microsoft, Inc.Windows 8 for 32-bit systems Base | for x64-based systems Base

Associated Products:
N/A




Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service. This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment.


LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
Powered by  IntelliShield