Technical Description

Multiple vulnerabilities have been identified in Microsoft Office, which could be exploited by attackers to take complete control of an affected system.

The first issue is caused by a memory corruption error when processing version information, which could be exploited to execute arbitrary code by tricking a user into opening a specially crafted Excel file.

The second vulnerability is caused by a memory corruption error when processing the number of active worksheets, which could be exploited to execute arbitrary code by tricking a user into opening a specially crafted Excel file.

The third issue is caused by a memory corruption error when denoting the start of a Workspace designation, which could be exploited to execute arbitrary code by tricking a user into opening a specially crafted Excel file.

Affected Products

Microsoft Office 2000 Service Pack 3
Microsoft Office XP Service Pack 3
Microsoft Office 2003 Service Pack 2
Microsoft Office System 2007

Microsoft Excel 2000 Service Pack 3
Microsoft Excel 2002 Service Pack 3
Microsoft Excel 2003 Service Pack 2
Microsoft Excel 2003 Viewer
Microsoft Office Excel 2007
Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats

Solution

Apply patches :
http://www.microsoft.com/technet/security/Bulletin/MS07-036.mspx

References

http://www.vupen.com/english/advisories/2007/2478
http://www.microsoft.com/technet/security/Bulletin/MS07-036.mspx

Credits

Vulnerabilities reported by the vendor.

ChangeLog

2007-07-10 : Initial release

Vulnerability Management

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