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Vulnerability Alert

Microsoft Windows Active Template Library Object Type Mismatch Code Execution Vulnerability

 
Threat Type:CWE-94: Code Injection
IntelliShield ID:18774
Version:1
First Published:2009 August 11 18:03 GMT
Last Published:2009 August 11 18:03 GMT
Port: Not available
CVE:CVE-2009-2494
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:9.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:6.9
 
Version Summary:

Microsoft Windows Active Template Library contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code.  Updates are available.

 
 
Description

Microsoft Windows Active Template Library contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code.

This vulnerability exists due to improper memory operations on invalid data.  An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to visit a malicious website.  If the user views the site, the attacker could execute arbitrary code with the privileges of the user.

Microsoft has confirmed this vulnerability in a security bulletin and released software updates that correct it.

 
Warning Indicators

Multiple components of the following Microsoft systems are vulnerable:

  • Windows 2000 SP4 and prior
  • Windows XP Media Center Edition 2005
  • Windows XP SP3 and prior
  • Windows XP Professional x64 Edition SP2 and prior
  • Windows Server 2003 SP2 and prior
  • Windows Server 2003 x64 Edition SP2 and prior
  • Windows Server 2003 for Itanium-based Systems SP2 and prior
  • Windows Vista SP2 and prior
  • Windows Vista x64 Edition SP2 and prior
  • Windows Server 2008 for 32-bit Systems SP2 and prior
  • Windows Server 2008 for x64-based Systems SP2 and prior
  • Windows Server 2008 for Itanium-based Systems SP2 and prior
 
IntelliShield Analysis

An attacker cannot directly exploit this vulnerability and instead relies upon user participation in order to accomplish an exploit.  The attacker must convince a user to view a malicious website.  The attacker may provide links to users within e-mail messages or post malicious content on public websites in an attempt to launch exploits against any users visiting the website.

Because the vulnerability exists in the Microsoft ATL rather than the ATL included with Visual Studio, the exposure of this vulnerability may be reduced.  Applications are much more likely to use the Visual Studio ATL, making identification and targeting of an application affected by this vulnerability more difficult.

The Cisco Applied Intelligence team has created an Applied Mitigation Bulletin to address vulnerabilities that Microsoft disclosed in the August 2009 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 August 2009 

The update available from Microsoft corrects this vulnerability by properly checking stream data reads.

 
Vendor Announcements

Microsoft has released a security bulletin at the following link: MS09-037

 
Impact

An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code with the privileges of the user.  If that user holds elevated privileges, the attacker could execute code resulting in a complete system compromise.

 
Technical Information

The vulnerability exists within the Microsoft Active Template Library.  Any application relying upon the library may be leveraged to exploit the vulnerability, including ActiveX controls that may be instantiated within Internet Explorer.

This vulnerability exists due to improper memory operations on invalid data.  When the Microsoft Active Template Library (ATL) reads data from an input stream, that data input may be set to an invalid type.  The deletion of the data from memory could trigger an error condition, corrupting memory areas.

An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to visit a malicious website designed to pass malformed data to an ActiveX control relying upon the ATL.  The processing of the malformed data could cause memory corruption that the attacker could leverage to execute arbitrary code with the privileges of the user.

 
Safeguards

Administrators are advised to apply the applicable software updates.

Users should verify that unsolicited links are safe to follow.

Administrators are advised to use an unprivileged account for routine activities.

Additional safeguards are available in Microsoft Security Advisory 973882.

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

 
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 Windows Update website. Microsoft Windows Server Update Services (WSUS), Systems Management Server, and System Center Configuration Manager can assist administrators in deploying software updates.


Signatures
 
Cisco Intrusion Prevention System (IPS) 6.0
Signature IDSignature NameReleaseLatest Release Date
31279/0Windows ATL Object Type Mismatch Code ExecutionS6112011 Dec 06 
38326/0VideoLAN VLC Media Player SMB URI Buffer Overflow VulnerabilityS6712012 Sep 26 
 
Alert History
 

Initial Release



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

Primary Products:
Microsoft, Inc.Windows 2000 Advanced Server Base, SP1, SP2, SP3, SP4 | Professional Base, SP1, SP2, SP3, SP4 | Server Base, SP1, SP2, SP3, SP4
Microsoft, Inc.Windows Server 2003 Datacenter Edition Base, SP1, SP2 | Datacenter Edition, 64-bit (Itanium) Base, SP1, SP2 | Datacenter Edition x64 (AMD/EM64T) Base, SP2 | Enterprise Edition Base, SP1, SP2 | Enterprise Edition, 64-bit (Itanium) Base, SP1, SP2 | Enterprise Edition x64 (AMD/EM64T) Base, SP2 | Standard Edition Base, SP1, SP2 | Standard Edition, 64-bit (Itanium) Base, SP1, SP2 | Standard Edition x64 (AMD/EM64T) Base, SP2 | Web Edition Base, SP1, SP2
Microsoft, Inc.Windows Server 2008 Datacenter Edition Base, SP1, SP2 | Datacenter Edition, 64-bit Base, SP1, SP2 | Itanium-Based Systems Edition Base, SP1, SP2 | Enterprise Edition Base, SP1, SP2 | Enterprise Edition, 64-bit Base, SP1, SP2 | Essential Business Server Standard Base, SP1, SP2 | Essential Business Server Premium Base, SP1, SP2 | Essential Business Server Premium, 64-bit Base, SP1, SP2 | Standard Edition Base, SP1, SP2 | Standard Edition, 64-bit Base, SP1, SP2 | Web Server Base, SP1, SP2 | Web Server, 64-bit Base, SP1, SP2
Microsoft, Inc.Windows Vista Home Basic Base, SP1, SP2 | Home Premium Base, SP1, SP2 | Business Base, SP1, SP2 | Enterprise Base, SP1, SP2 | Ultimate Base, SP1, SP2 | Home Basic x64 Edition Base, SP1, SP2 | Home Premium x64 Edition Base, SP1, SP2 | Business x64 Edition Base, SP1, SP2 | Enterprise x64 Edition Base, SP1, SP2 | Ultimate x64 Edition Base, SP1, SP2
Microsoft, Inc.Windows XP Home Edition Base, SP1, SP2, SP3 | Professional Edition Base, SP1, SP2, SP3 | Professional x64 (AMD/EM64T) Base, SP2 | Media Center Edition 2005

Associated Products:
N/A




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