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Vulnerability Alert

Microsoft Windows GDI+ PNG Image Processing Integer Overflow Vulnerability

 
Threat Type:CWE-94: Code Injection
IntelliShield ID:19132
Version:3
First Published:2009 October 13 18:36 GMT
Last Published:2009 November 05 15:22 GMT
Port: Not available
CVE:CVE-2009-3126
BugTraq ID:36649
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:9.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:6.9
Related Resources:
View related IPS Signature
 
 
Version Summary:

Microsoft has re-released a security bulletin with corrected information that indicates Visio Viewer version 2007 is not affected unless SP1 or SP2 has been applied.

 
 
Description

Multiple Microsoft products contain a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code.

This vulnerability exists due to incorrect memory calculations performed after the processing of a PNG image.? An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to view a malicious file.? If the user views the file, 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

The following Microsoft products are affected:

  • Internet Explorer 6 SP1 on Windows 2000 SP4 and prior
  • Office XP SP3 and prior
  • Office 2003 SP3 and prior
  • Office 2007 SP2 and prior
  • Office Groove 2007 SP1 and prior
  • Office Project 2002 SP1 and prior
  • Office Excel Viewer 2003 SP3 and prior
  • Office Excel Viewer 2007
  • Office Word Viewer 2003 SP3 and prior
  • Office Word Viewer 2007
  • Office PowerPoint Viewer 2007 SP1 and prior
  • Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2 and prior
  • Visio 2002 SP2 and prior
  • Visio Viewer 2007 SP1 and SP2
  • Expression Web 2
  • Works 8.5
  • Report Viewer 2005 SP1 Redistributable Package
  • Report Viewer 2008 Redistributable Package SP1 and prior
  • Forefront Client Security 1.0 on Microsoft Windows 2000 SP4
  • SQL Server 2000 Reporting Services SP2
  • SQL Server 2005 SP3
  • SQL Server 2005 x64 Edition SP3
  • SQL Server 2005 for Itanium-based Systems SP3
  • Windows XP SP3 and prior
 
IntelliShield Analysis

An attacker cannot directly exploit this vulnerability and instead must rely upon user participation to successfully accomplish an exploit.? The attacker must convince a user to view a malicious image file.? Attackers may provide images to users as e-mail attachments, possibly embedded in another document type, or by posting images on public websites.

A successful exploit could allow the attacker to execute arbitrary code with the privileges of the user.? Systems that limit user privileges have a reduced risk of compromise in the event of an exploit, as an exploit would run in a restricted security context.? However, on a system that grants users elevated privileges, the attacker could execute code to completely compromise the system.

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

The update available from Microsoft corrects this vulnerability by properly validating data before use in memory operations.

 
Vendor Announcements

Microsoft has re-released a security bulletin at the following link: MS09-062

 
Impact

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

 
Technical Information

This vulnerability exists due to incorrect memory calculations performed after the processing of a PNG image.? An integer overflow may occur when the GDI+ component processes image data, resulting in an incorrect allocation of memory.? An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to view a malicious image.? The processing of a malicious image could trigger an error condition that results in memory corruption.? An attacker could leverage the memory corruption to execute arbitrary code with the privileges of the user.

 
Safeguards

Administrators are advised to apply the available software updates.

Administrators may consider restricting access to the gdiplus.dll component.

Administrators may consider unregistering the vgx.dll library.

Users are advised not to visit websites or follow links that have suspicious characteristics or cannot be verified as safe.

Users are advised not to open media files from suspicious or unrecognized sources. If users cannot verify that media files are safe, they are advised not to open them.

Users are advised to run applications with the least necessary privileges.

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
21479/0GDI+ PNG Integer Overflow VulnerabilityS4412009 Oct 13 
24000/0GDI+ PNG Integer Overflow VulnerabilityS4732010 Feb 25 
 
Alert History
 

Version 2, October 29, 2009, 9:10 AM: Microsoft has re-released a security bulletin and updated software to address the Windows GDI+ PNG image processing integer overflow vulnerability.  Microsoft has indicated that Microsoft Visio Viewer 2007 is also affected.

Version 1, October 13, 2009, 2:36 PM: Multiple Microsoft products contain a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code with the privileges of the user.  Updates are available.



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

Primary Products:
Microsoft, Inc.Forefront Client Security Original Release Base
Microsoft, Inc.Groove 2007 Base, SP1
Microsoft, Inc.Internet Explorer 6.0 SP1
Microsoft, Inc.Microsoft Expression Web 2
Microsoft, Inc.Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats Original Release Base, SP1, SP2
Microsoft, Inc.Microsoft Office Excel Viewer 2003 Base, SP1, SP2, SP3 | 2007 Base
Microsoft, Inc.Microsoft Office Word Viewer 2003 Base, SP1, SP2, SP3
Microsoft, Inc.Microsoft PowerPoint Viewer 2007 Base, SP1
Microsoft, Inc.Microsoft Report Viewer 2005 Base, SP1 | 2008 Base, SP1
Microsoft, Inc.Microsoft Works 8.5 Base
Microsoft, Inc.Office XP (2002) Base, SP1, SP2, SP3 | 2003 Base, SP1, SP2, SP3, Multilingual User Interface Pack | 2007 Base, SP1, SP2
Microsoft, Inc.Project 2002 Base, SP1
Microsoft, Inc.SQL Server 2005 Base, SP1, SP2 | 2005 (Itanium) Base, SP1, SP2 | 2005 (x64) Base, SP1, SP2
Microsoft, Inc.SQL Server Reporting Services (SSRS) 2000 Base, SP1, SP2
Microsoft, Inc.Visio 2002 Base, SP1, SP2
Microsoft, Inc.Visio Viewer 2007 SP1, SP2
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 XP Home Edition Base, SP1, SP2, SP3 | Professional Edition Base, SP1, SP2, SP3
Microsoft, Inc.Word Viewer 2007 Base

Associated Products:
Microsoft, Inc.Visio Viewer 2007 Base




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