Rule

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Sid
19225

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Summary:
This event is generated when an attempt is made to exploit a known vulnerability in excel.

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Impact:
Denial of Service. Information disclosure. Loss of integrity. 

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Detailed Information:
Microsoft Excel 2002 SP3, 2003 SP3, and 2007 SP2; Office 2004 and 2008 for Mac; Open XML File Format Converter for Mac; Excel Viewer SP2; and Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2 do not properly validate record information during parsing of Excel spreadsheets, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted spreadsheet, aka "Excel Out of Bounds Array Access Vulnerability."

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Affected Systems:
microsoft excel 2002
microsoft excel 2003
microsoft excel 2007

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Attack Scenarios:
An attacker can host a web site that will return code of their choosing to the object when a victim clicks on a malicious link.

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Ease of Attack:
Simple. Exploits exist.

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action:
Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches.

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Contributors:
Sourcefire Vulnerability Research Team
This document was generated from data supplied by the National Vulnerability Database. A product of the National Institute of Standards and Technology.
For more information see http://nvd.nist.gov/

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Additional References:

NIST CVE-2011-1274:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2011-1274
 
Common Weakness Enumeration:
http://cwe.mitre.org/data/definitions/120.html
 
Common Attack Pattern Enumeration and Classification:
http://capec.mitre.org/data/definitions/100.html

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