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Insecure Library Loading
Highly critical

Microsoft Excel Multiple Vulnerabilities

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Description


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

1) An error within the processing of IMDATA records can be exploited to corrupt memory via a file containing a specially crafted IMDATA record.

2) An error when processing records can be exploited to corrupt memory via a file containing a specially crafted record.

3) An error when processing strings can be exploited to corrupt memory via a file containing a specially crafted string.

4) An error when processing column records can be exploited to corrupt memory via a file containing a column record with in out-of-range value.

5) A boundary error when processing palette records can be exploited to cause a heap-based buffer overflow via a file containing a specially crafted palette record with a large amount of entries.

Successful exploitation of the vulnerabilities allows execution of arbitrary code.


Solution:
Apply patches.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) Jeff Gennari, US-CERT.
2) Jie Ma, Fortinet Security Research Team.
3) NSFocus Security Team.
4) Greg MacManus, iDefense Labs.
5) Greg MacManus, iDefense Labs.

Original Advisory:
MS07-002 (KB927198):
http://www.microsoft.com/technet/security/Bulletin/MS07-002.mspx

Fortinet:
http://www.fortiguardcenter.com/advisory/FGA-2007-01.html

US-CERT VU#749964:
http://www.kb.cert.org/vuls/id/749964

iDefense Labs:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=460
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=461

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Microsoft Excel Multiple Vulnerabilities

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