Microsoft Excel Featheader Record Memory Corruption Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-03-03
• EPSS: 84% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official description

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."

CISA: Microsoft Office Excel 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.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 24 Mar 2022): Apply updates per vendor instructions.

• Patch on docs.microsoft.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• archives.neohapsis.com/archives/bugtraq/2009-11/0080.htmlBroken Link
• labs.idefense.com/intelligence/vulnerabilities/display.phpBroken Link
• osvdb.org/59860Broken Link
• www.exploit-db.com/exploits/14706ExploitThird Party AdvisoryVDB Entry
• www.securityfocus.com/bid/36945Broken LinkThird Party AdvisoryVDB Entry
• www.securitytracker.com/idBroken LinkThird Party AdvisoryVDB Entry
• www.us-cert.gov/cas/techalerts/TA09-314A.htmlThird Party AdvisoryUS Government Resource
• www.zerodayinitiative.com/advisories/ZDI-09-083Third Party AdvisoryVDB Entry
• docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-067PatchVendor Advisory
• oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6521Broken Link
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource