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HTTP: Microsoft Office Excel Index Parsing Code Execution

A code execution vulnerability exists in Microsoft Office Excel products. The vulnerability is due to an improper validation of a maliciously crafted index value in an Excel document. Remote attackers can exploit this vulnerability by enticing target users to open a malicious Excel file, potentially causing arbitrary code to be injected and executed in the security context of the current user. In an attack scenario, where arbitrary code is injected and executed on the target machine, the behaviour of the target is dependent on the intention of the malicious code. If such an attack is not executed successfully, the vulnerable application may terminate as a result of invalid memory access.

Extended Description

Microsoft Excel is prone to a remote code-execution vulnerability. Attackers can exploit this issue by enticing victims into opening a specially crafted Excel ('.xls') file. Successful exploits can allow attackers to execute arbitrary code with the privileges of the user running the application.

Affected Products

• Microsoft excel_2002 SP1
• Microsoft excel_2002 SP2
• Microsoft excel_2002 SP3
• Microsoft excel_2002
• Microsoft excel_2003 SP1
• Microsoft excel_2003 SP2
• Microsoft excel_2003 SP3
• Microsoft excel_2003
• Microsoft excel_2007 SP1
• Microsoft excel_2007 SP2
• Microsoft excel_2007
• Microsoft excel_compatibility_pack
• Microsoft excel_viewer SP1
• Microsoft excel_viewer SP2
• Microsoft office_2004_for_mac
• Microsoft office_2008_for_mac
• Microsoft office_compatibility_pack_2007 SP1
• Microsoft office_compatibility_pack_2007 SP2
• Microsoft office_excel_viewer_2003 SP3
• Microsoft office_excel_viewer_2003
• Microsoft open_xml_file_format_converter_for_mac

References

• BugTraq: 36909
• CVE: CVE-2009-3132