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Category:   Application (Generic)  >   Microsoft Virtual PC/Server Vendors:   Microsoft
Microsoft Virtual PC/Server Heap Overflow Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1018567
SecurityTracker URL:  http://securitytracker.com/id/1018567
CVE Reference:   CVE-2007-0948   (Links to External Site)
Updated:  Nov 14 2007
Original Entry Date:  Aug 14 2007
Impact:   User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2004, 2004 SP1, 2005, 2005 R2; 6.1 for Mac, 7 for Mac
Description:   A vulnerability was reported in Microsoft Virtual PC and Microsoft Virtual Server. A local user can obtain elevated privileges on the target system.

A local user with administrator permissions on the the guest operating system can trigger a heap overflow and execute arbitrary code on the target host system or other guest operating systems.

Microsoft Virtual Server 2005 R2 SP1 and Microsoft Virtual PC 2007 are not affected.

Rafal Wojtczuk of McAfee Avert Labs reported this vulnerability.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   On August 14, 2007, Microsoft issued a fix. However, this original fix did not apply properly on some systems.

On November 13, 2007, Microsoft re-issued the fix. The new fix does not need to be applied on systems where the original update was successful.

The vendor has issued the following revised fixes:

Microsoft Virtual PC 2004:

http://www.microsoft.com/downloads/details.aspx?FamilyId=cbdeaa50-7115-4673-97c4-10009f9c5c42

Microsoft Virtual PC 2004 Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?FamilyId=17ffe5a2-3551-4858-93b6-5e25af87d808

Microsoft Virtual Server 2005 Standard Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=bc02ea6d-2884-4637-9894-3413a71329ee

Microsoft Virtual Server 2005 Enterprise Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=da474b6f-9f0c-43f6-b432-050f7e76967d

Microsoft Virtual Server 2005 R2 Standard Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=43fa1327-8e5e-4c92-901f-1ff2a0a087b4

Microsoft Virtual Server 2005 R2 Enterprise Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=c2fc16c4-1fb0-4c09-b04a-684b40df8517

Microsoft Virtual PC for Mac Version 6.1, Microsoft Virtual PC for Mac Version 7:

http://www.microsoft.com/mac/downloads.aspx#VPC

A restart is required.

The Microsoft advisory is available at:

http://www.microsoft.com/technet/security/bulletin/ms07-049.mspx

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms07-049.mspx (Links to External Site)
Cause:   Boundary error
Underlying OS:   UNIX (OS X), Windows (Any)

Message History:   None.


 Source Message Contents

Date:  Tue, 14 Aug 2007 14:48:51 -0400
Subject:  Microsoft Security Bulletin MS07-049 - Important: Vulnerability in Virtual PC and Virtual Server Could Allow Elevation of Privilege (937986)


http://www.microsoft.com/technet/security/bulletin/ms07-049.mspx

CVE-2007-0948
 
 


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