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Security Intelligence Operations
Microsoft Windows GDI+ WMF File Processing Integer Overflow Vulnerability |
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| Vulnerability Alert | Powered by  |
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| Threat Type: | Unintended Weakness: Arbitrary Code Execution |
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| IntelliShield ID: | 19125 |
| Version: | 3 |
| First Published: | October 13, 2009 02:20 PM EDT |
| Last Published: | November 05, 2009 10:57 AM EST |
| Vector: | Network |
| Authentication: | None |
| Exploit: | Unproven |
| Port: |
Not Available
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| CVE: | CVE-2009-2500 |
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| Urgency: |
Unlikely Use
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| Credibility: |
Confirmed
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| Severity: |
Moderate Damage
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| CVSS Base: | 9.3 |
CVSS Calculator
CVSS Version 2
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| CVSS Temporal: | 6.9 |
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| 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. |
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| Description |
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Multiple Microsoft products contain a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code.
This vulnerability exists due to insufficient boundary checking on data used in memory operations. An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to view a malicious WMF 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. |
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Warning Indicators |
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The following Microsoft products are affected:
- Internet Explorer 6 SP1 on Microsoft 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
- Word Viewer 2003 SP3 and prior
- 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 SP2 and SP3 and prior
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| IntelliShield Analysis |
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Attackers must rely upon user interaction to accomplish an exploit. An attacker must convince a user to view a malicious WMF image. The image may be contained within a Microsoft Office document, or an attacker may send files directly to users via e-mail messages or post the malicious content on websites.
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 improving rendering of WMF images. |
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Vendor Announcements |
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Microsoft has re-released a security bulletin at the following link: MS09-062 |
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| Impact |
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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. |
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| Technical Information |
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This vulnerability exists due to insufficient boundary checking on data used in memory operations. The processing of overly large user-supplied input within WMF files could trigger an integer overflow, corrupting memory. An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to view a malicious file, potentially as part of a website or embedded within another document type. When viewed, the malicious WMF file could trigger memory corruption that the attacker could leverage to execute arbitrary code with the privileges of the user. |
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| Safeguards |
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Administrators are advised to apply the appropriate 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. |
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| Patches/Software |
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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. |
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| Signatures |
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| Alert History |
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Version 2, October 29, 2009, 8:58 AM: Microsoft has re-released a security bulletin with updated software to address the Windows GDI+ WMF filw processing integer overflow vulnerability. Microsoft has also indicated that an additional product is affected.
Version 1, October 13, 2009, 2:20 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. |
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Product Sets |
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The security vulnerability applies to the following combinations of products.
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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. |
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