1. Symantec/
  2. Security Response/
  3. Attack Signatures/
  4. HTTP MSIE VML RecolorInfo Code Exec

HTTP MSIE VML RecolorInfo Code Exec

Severity: High

This attack could pose a serious security threat. You should take immediate action to stop any damage or prevent further damage from happening.

Description

This signature detects attempts to exploit a remote code execution vulnerability that exists in the Vector Markup Language (VML) implementation in Microsoft Windows.

Additional Information

Microsoft Windows is prone to a buffer-overrun vulnerability that arises because of an error in the processing of Vector Markup Language documents in 'Vgx.dll'. When a vulnerable application is used to view a maliciously designed Vector Markup Language document, a buffer overrun occurs.

The problem occurs because the product of two integers multiplied together is not properly bounds checked. This could permit an attacker to allocate a smaller amount of memory than is required, and potentialy overwrite a function pointer stored on the heap.

An attacker can exploit this issue to execute arbitrary code within the context of the affected application.

Affected

  • Microsoft Internet Explorer 5.0.1, 5.0.1 SP1, 5.0.1 SP2, 5.0.1 SP3, 5.0.1 SP4, 6.0, 6.0 SP1, 6.0 SP2, 7.0, 7.0 beta2
  • Microsoft Windows 2000 Advanced Server SP1, SP2, SP3, SP4
  • Microsoft Windows 2000 Datacenter Server SP1, SP2, SP3, SP4
  • Microsoft Windows 2000 Professional SP1, SP2, SP3, SP4
  • Microsoft Windows 2000 Server SP1, SP2, SP3, SP4
  • Microsoft Windows Server 2003 Datacenter Edition SP1
  • Microsoft Windows Server 2003 Datacenter Edition Itanium SP1
  • Microsoft Windows Server 2003 Datacenter x64 Edition
  • Microsoft Windows Server 2003 Enterprise Edition SP1
  • Microsoft Windows Server 2003 Enterprise Edition Itanium SP1
  • Microsoft Windows Server 2003 Enterprise x64 Edition
  • Microsoft Windows Server 2003 Standard Edition SP1
  • Microsoft Windows Server 2003 Standard x64 Edition
  • Microsoft Windows Server 2003 Web Edition SP1
  • Microsoft Windows XP
  • Microsoft Windows XP Home SP1, SP2
  • Microsoft Windows XP Media Center Edition SP1, SP2
  • Microsoft Windows XP Professional SP1, SP2
  • Microsoft Windows XP Professional x64 Edition
  • Microsoft Windows XP Tablet PC Edition SP1, SP2

Response

Workaround:
The following workarounds may help defend against exploitation of this vulnerability:

- Set Internet and Local intranet security zone settings to 'High'.
- Restrict websites to only your trusted sites.n- Disable JavaScripting in the browser.
- View emails in plain text.

Microsoft has released detailed workaround information regarding this issue; please see the referenced advisory for more information.Solution:The vendor has released security advisory MS07-004 detailing updates to address this issue in supported versions of affected applications. Please see the referenced advisory for details on obtaining and applying the appropriate updates.

Microsoft Internet Explorer 7.0 beta1:
Microsoft Patch Security Update for Internet Explorer 7 for Windows XP Service Pack 2 (KB929969)
Microsoft Patch Security Update for Internet Explorer 7 for Windows XP x64 Edition (KB929969)
Microsoft Patch Security Update for Internet Explorer 7 for Windows Server 2003 (KB929969)
Microsoft Patch Security Update for Internet Explorer 7 for Windows Server 2003 for Itanium-based Systems (KB929969)
Microsoft Patch Security Update for Internet Explorer 7 for Windows Server 2003 x64 Edition (KB929969)


Microsoft Internet Explorer 5.0.1 SP4:
Microsoft Patch Security Update for Internet Explorer 5.01 Service Pack 4 (KB929969)


Microsoft Internet Explorer 6.0 SP1:
Microsoft Patch Security Update for Internet Explorer 6 Service Pack 1 (KB929969)


Microsoft Windows Server 2003 Datacenter Edition :
Microsoft Patch Security Update for Windows Server 2003 (KB929969)


Microsoft Windows Server 2003 Datacenter Edition SP1:
Microsoft Patch Security Update for Windows Server 2003 (KB929969)


Microsoft Windows Server 2003 Datacenter Edition 64-bit :
Microsoft Patch Security Update for Windows Server 2003 for Itanium-based Systems (KB929969)


Microsoft Windows Server 2003 Datacenter Edition 64-bit SP1:
Microsoft Patch Security Update for Windows Server 2003 for Itanium-based Systems (KB929969)


Microsoft Windows Server 2003 Datacenter x64 Edition:
Microsoft Patch Security Update for Windows Server 2003 x64 Edition (KB929969)


Microsoft Windows Server 2003 Enterprise Edition :
Microsoft Patch Security Update for Windows Server 2003 (KB929969)


Microsoft Windows Server 2003 Enterprise Edition SP1:
Microsoft Patch Security Update for Windows Server 2003 (KB929969)


Microsoft Windows Server 2003 Enterprise Edition 64-bit :
Microsoft Patch Security Update for Windows Server 2003 for Itanium-based Systems (KB929969)


Microsoft Windows Server 2003 Enterprise Edition 64-bit SP1:
Microsoft Patch Security Update for Windows Server 2003 for Itanium-based Systems (KB929969)


Microsoft Windows Server 2003 Enterprise x64 Edition:
Microsoft Patch Security Update for Windows Server 2003 x64 Edition (KB929969)


Microsoft Windows Server 2003 Standard Edition :
Microsoft Patch Security Update for Windows Server 2003 (KB929969)


Microsoft Windows Server 2003 Standard Edition SP1:
Microsoft Patch Security Update for Windows Server 2003 (KB929969)


Microsoft Windows Server 2003 Standard x64 Edition:
Microsoft Patch Security Update for Windows Server 2003 x64 Edition (KB929969)


Microsoft Windows Server 2003 Web Edition :
Microsoft Patch Security Update for Windows Server 2003 (KB929969)


Microsoft Windows Server 2003 Web Edition SP1:
Microsoft Patch Security Update for Windows Server 2003 (KB929969)


Microsoft Windows XP Home SP2:
Microsoft Patch Security Update for Windows XP Service Pack 2 (KB929969)


Microsoft Windows XP Media Center Edition SP2:
Microsoft Patch Security Update for Windows XP Service Pack 2 (KB929969)


Microsoft Windows XP Professional SP2:
Microsoft Patch Security Update for Windows XP Service Pack 2 (KB929969)


Microsoft Windows XP Professional x64 Edition:
Microsoft Patch Security Update for Windows XP x64 Edition (KB929969) - English


Microsoft Windows XP Tablet PC Edition SP2:
Microsoft Patch Security Update for Windows XP Service Pack 2 (KB929969)
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