Home/CVE/Integer underflow in Microsoft Excel 2002 SP3, 2003 SP3, 2007 SP2, and 2010; Office 2004 and 2008 for Mac; Open XML File
CVE

CVE-2011-0097

Integer underflow in Microsoft Excel 2002 SP3, 2003 SP3, 2007 SP2, and 2010; Office 2004 and 2008 for Mac; Open XML File

Integer underflow in Microsoft Excel 2002 SP3, 2003 SP3, 2007 SP2, and 2010.

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 allows remote attackers to execute arbitrary code via a crafted 400h substream in an Excel file, which triggers a stack-based buffer overflow, aka "Excel Integer Overrun Vulnerability.".

HIGH · CVSS 9.3 EPSS 0.65217
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 2% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules13 YARA rules0
▤

Affected Products & Versions

5
microsoft excelall versions
microsoft excel viewerall versions
microsoft officeall versions
microsoft office compatibility packall versions
microsoft open xml file format converterall versions
◈

Sigma Hunt Rules

13
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighPython Function Execution Security Warning Disabled In Excel
producthighPotential Excel.EXE DCOM Lateral Movement Via ActivateMicrosoftApp
producthighPotential Persistence Via Excel Add-in - Registry
producthighPython Function Execution Security Warning Disabled In Excel - Registry
productmediumMicrosoft Excel Add-In Loaded From Uncommon Location
producthighSuspicious Microsoft Office Child Process - MacOS
▣

Scoring & Timeline

9.3
HIGH · CVSS v2 (legacy) · secure@microsoft.com
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:M/Au:N/C:C/I:C/A:C
Published to NVD13 Apr 2011 · 06:55 PM
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://osvdb.org/71758
http://secunia.com/advisories/39122Vendor Advisory
http://secunia.com/secunia_research/2011-31Vendor Advisory
http://www.securityfocus.com/bid/47201
http://www.securitytracker.com/id?1025337
http://www.us-cert.gov/cas/techalerts/TA11-102A.htmlUS Government Resource
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