PT-2011-3529 · Microsoft · Office+6

Published 2011-09-15 · Updated 2018-10-12 · CVE-2011-1989

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Microsoft Excel versions 2003 SP3 through 2007 SP2 Microsoft Excel 2010 Gold and SP1 Office 2004, 2008, and 2011 for Mac Open XML File Format Converter for Mac Excel Viewer SP2 Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2 Excel Services on Office SharePoint Server 2007 SP2 Excel Services on Office SharePoint Server 2010 Gold and SP1 Excel Web App 2010 Gold and SP1

Description The issue is related to the improper parsing of conditional expressions associated with formatting requirements in Microsoft Excel, allowing remote attackers to execute arbitrary code via a crafted spreadsheet. This could enable an attacker to take complete control of an affected system, install programs, view, change, or delete data, or create new accounts with full user rights.

Recommendations For Microsoft Excel 2003 SP3, update to a newer version to mitigate the risk. For Microsoft Excel 2007 SP2, update to a newer version to mitigate the risk. For Microsoft Excel 2010 Gold and SP1, update to a newer version to mitigate the risk. For Office 2004, 2008, and 2011 for Mac, update to a newer version to mitigate the risk. For Open XML File Format Converter for Mac, update to a newer version to mitigate the risk. For Excel Viewer SP2, update to a newer version to mitigate the risk. For Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2, update to a newer version to mitigate the risk. For Excel Services on Office SharePoint Server 2007 SP2, update to a newer version to mitigate the risk. For Excel Services on Office SharePoint Server 2010 Gold and SP1, update to a newer version to mitigate the risk. For Excel Web App 2010 Gold and SP1, update to a newer version to mitigate the risk.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2011-1989

ZDI-11-280

Affected Products

Excel Viewer

Excel Web App

Office Excel

Office

Office Compatibility Pack

Office Sharepoint Server

Open Xml File Format Converter For Mac

References · 8

• https://zerodayinitiative.com/advisories/ZDI-11-280 · Security Note
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-072 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2011-1989 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1989 · Security Note
• http://technet.microsoft.com/en-us/security/bulletin/MS11-072 · Note
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12974 · Note
• http://us-cert.gov/cas/techalerts/TA11-256A.html · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1989 · Note