CVE-2009-3129
HIGHCVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
5Description
Microsoft Office Excel 2002 SP3, 2003 SP3, and 2007 SP1 and SP2; Office 2004 and 2008 for Mac; Open XML File Format Converter for Mac; Office Excel Viewer 2003 SP3; Office Excel Viewer SP1 and SP2; and Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2 allows remote attackers to execute arbitrary code via a spreadsheet with a FEATHEADER record containing an invalid cbHdrData size element that affects a pointer offset, aka "Excel Featheader Record Memory Corruption Vulnerability."
Analysis
Microsoft Office Excel 2002 through 2007 and Office for Mac contain a memory corruption vulnerability triggered by a specially crafted spreadsheet with a malformed FEATHEADER record, allowing remote code execution.
Technical Context
The CWE-787 flaw occurs when Excel parses the FEATHEADER record in legacy BIFF format files. A crafted record with incorrect size fields causes a heap-based buffer overflow, enabling arbitrary code execution in the context of the user running Excel.
Affected Products
['Microsoft Office Excel 2002 SP3', 'Microsoft Office Excel 2003 SP3', 'Microsoft Office Excel 2007 SP1/SP2', 'Microsoft Office 2004/2008 for Mac', 'Office Excel Viewer 2003 SP3', 'Office Compatibility Pack for Word, Excel, and PowerPoint 2007']
Remediation
Apply Microsoft security update MS09-067. Migrate to current Office versions with Protected View and ASLR mitigations. Block legacy .xls formats at the email gateway.
Priority Score
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External POC / Exploit Code
Leaving vuln.today