Executive Summary

TitleVulnerability in Microsoft Excel Could Allow Remote Code Execution (2640241)
NameMS11-096First vendor Publication2011-12-13
VendorMicrosoftLast vendor Modification2011-12-21
Severity (Vendor) ImportantRevision 1.1

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score9.3Attack RangeNetwork
Cvss Impact Score10Attack ComplexityMedium
Cvss Expoit Score8.6AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores


Severity Rating: Important

Revision Note: V1.1 (December 21, 2011): Added Microsoft Office Compatibility Pack Service Pack 3 to the Non-Affected Software table. This is an informational change only. There were no changes to the detection logic or the update files.

Summary: This security update resolves a privately reported vulnerability in Microsoft Office. The vulnerability could allow remote code execution if a user opens a specially crafted Excel file. An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. Installing and configuring Office File Validation (OFV) to prevent the opening of suspicious files blocks the attack vectors for exploiting the vulnerabilities described in CVE-2011-3403.

Original Source

Url : http://technet.microsoft.com/en-us/security/bulletin/ms11-096

CWE : Common Weakness Enumeration

100 %CWE-94Failure to Control Generation of Code ('Code Injection')

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:14702
Oval ID: oval:org.mitre.oval:def:14702
Title: Record Memory Corruption Vulnerability
Description: Microsoft Excel 2003 SP3 and Office 2004 for Mac do not properly handle objects in memory, which allows remote attackers to execute arbitrary code via a crafted Excel spreadsheet, aka "Record Memory Corruption Vulnerability."
Family: windows Class: vulnerability
Reference(s): CVE-2011-3403
Version: 5
Platform(s): Microsoft Windows XP
Microsoft Windows Server 2003
Microsoft Windows Vista
Microsoft Windows Server 2008
Microsoft Windows Server 2008 R2
Microsoft Windows 7
Product(s): Microsoft Excel 2003
Definition Synopsis:

CPE : Common Platform Enumeration


OpenVAS Exploits

2011-12-14Name : Microsoft Office Excel Remote Code Execution Vulnerability (2640241)
File : nvt/secpod_ms11-096.nasl

Open Source Vulnerability Database (OSVDB)

77661Microsoft Office Excel Record Parsing Object Handling Remote Memory Corruption

Snort® IPS/IDS

2014-01-10Microsoft Office Excel Lel record memory corruption attempt
RuleID : 21422 - Revision : 11 - Type : FILE-OFFICE
2014-01-10Microsoft Office Excel Lel record memory corruption attempt
RuleID : 20718 - Revision : 11 - Type : FILE-OFFICE

Nessus® Vulnerability Scanner

2011-12-13Name : Arbitrary code can be executed on the remote host through Microsoft Office.
File : smb_nt_ms11-096.nasl - Type : ACT_GATHER_INFO
2011-12-13Name : An application installed on the remote Mac OS X host is affected by multiple ...
File : macosx_ms_office_dec2011.nasl - Type : ACT_GATHER_INFO

Alert History

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2014-02-17 11:47:11
  • Multiple Updates
2014-01-19 21:30:46
  • Multiple Updates
2013-01-30 13:26:55
  • Multiple Updates