From: Secunia Security Advisories (sec-advsecunia.com)
Date: Tue Jul 10 2007 - 16:02:15 CDT

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TITLE:
Microsoft Excel Multiple Code Execution Vulnerabilities

SECUNIA ADVISORY ID:
SA25995

VERIFY ADVISORY:
http://secunia.com/advisories/25995/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
From remote

SOFTWARE:
Microsoft Office Excel 2007
http://secunia.com/product/14161/
Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint
2007 File Formats
http://secunia.com/product/14165/
Microsoft Excel Viewer 2003
http://secunia.com/product/7700/
Microsoft Excel 2003
http://secunia.com/product/4970/
Microsoft Excel 2002
http://secunia.com/product/4043/
Microsoft Excel 2000
http://secunia.com/product/3054/
Microsoft Office 2000
http://secunia.com/product/24/
Microsoft Office XP
http://secunia.com/product/23/
Microsoft Office 2003 Professional Edition
http://secunia.com/product/2276/
Microsoft Office 2003 Small Business Edition
http://secunia.com/product/2277/
Microsoft Office 2003 Standard Edition
http://secunia.com/product/2275/
Microsoft Office 2003 Student and Teacher Edition
http://secunia.com/product/2278/
Microsoft Office 2007
http://secunia.com/product/13228/

DESCRIPTION:
Some vulnerabilities have been reported in Microsoft Excel, which can
be exploited by malicious people to compromise a user's system.

1) An unspecified calculation error when handling version-related
information can be exploited to corrupt memory via a specially
crafted Excel file.

2) An error in the validation of the number of active worksheets can
be exploited to corrupt memory via a specially crafted Excel file.

3) An error when validating the beginning of file attributes
associated with workspace information can be exploited via a
specially crafted Excel file.

Successful exploitation of the vulnerabilities may allow execution of
arbitrary code.

NOTE: Additional unspecified security issues discovered internally by
Microsoft have also been reported.

SOLUTION:
Apply patches.

Microsoft Excel 2000 SP3:
http://www.microsoft.com/downloads/details.aspx?FamilyId=83D94D8E-DDA6-4D74-B40D-476C2F0A3AF4

Microsoft Excel 2002 SP3:
http://www.microsoft.com/downloads/details.aspx?FamilyId=5E09D13B-D4B0-48FD-9880-73C180570267

Microsoft Excel 2003 SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyId=9D93C0CE-5124-4234-BA84-3C27005E010F

Microsoft Excel 2003 Viewer:
http://www.microsoft.com/downloads/details.aspx?FamilyId=11F42977-8828-494A-A183-D1ABA827B708

Microsoft Office Excel 2007:
http://www.microsoft.com/downloads/details.aspx?FamilyId=9AB28283-0320-4527-B033-5E80EF32CD34

Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint
2007 File Formats:
http://www.microsoft.com/downloads/details.aspx?FamilyId=E592AE5B-09AC-4F5B-B457-A54C9850AD4A

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
MS07-036 (KB936542):
http://www.microsoft.com/technet/security/Bulletin/MS07-036.mspx

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About:
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everybody keeping their systems up to date against the latest
vulnerabilities.

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