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             AUSCERT External Security Bulletin Redistribution

                               ESB-2010.0516
Vulnerabilities in Microsoft Office Excel Could Allow Remote Code Execution
                                9 June 2010

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Microsoft Office XP Service Pack 3
                   Microsoft Office 2003 Service Pack 3
                   2007 Microsoft Office System Service Pack 1 & 2
                   Microsoft Office 2004 for Mac
                   Microsoft Office 2008 for Mac
                   Open XML File Format Converter for Mac
                   Microsoft Office Excel Viewer Service Pack 1 and Microsoft
                     Office Excel Viewer Service Pack 2
                   Microsoft Office Compatibility Pack for Word, Excel, and
                     PowerPoint 2007 File Formats Service Pack 1 and Microsoft
                     Office Compatibility Pack for  Word, Excel, and PowerPoint
                     2007 File Formats Service Pack 2
Publisher:         Microsoft
Operating System:  Windows
                   Mac OS X
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Execute Arbitrary Code/Commands -- Existing Account            
                   Increased Privileges            -- Existing Account            
Resolution:        Patch/Upgrade
CVE Names:         CVE-2010-1254 CVE-2010-1253 CVE-2010-1252
                   CVE-2010-1251 CVE-2010-1250 CVE-2010-1249
                   CVE-2010-1248 CVE-2010-1247 CVE-2010-1246
                   CVE-2010-1245 CVE-2010-0824 CVE-2010-0823
                   CVE-2010-0822 CVE-2010-0821 

Original Bulletin: 
   http://www.microsoft.com/technet/security/Bulletin/MS10-038.mspx

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Microsoft Security Bulletin MS10-038 - Important

Vulnerabilities in Microsoft Office Excel Could Allow Remote Code Execution
(2027452)

Version: 1.0

General Information

Executive Summary

  This security update resolves fourteen privately reported vulnerabilities in
  Microsoft Office. The more severe vulnerabilities could allow remote code
  execution if a user opens a specially crafted Excel file. An attacker who
  successfully exploited any of these vulnerabilities could gain the same user
  rights as the local 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.

  This security update is rated Important for all supported editions of Microsoft
  Office Excel 2002, Microsoft Office Excel 2003, Microsoft Office Excel 2007,
  Microsoft Office 2004 for Mac, and Microsoft Office 2008 for Mac; Open XML File
  Format Converter for Mac; and all supported versions of Microsoft Office Excel
  Viewer and Microsoft Office Compatibility Pack. For more information, see the
  subsection, Affected and Non-Affected Software, in this section.

  The update addresses the vulnerabilities by changing the way that Microsoft
  Office Excel parses specially crafted Excel files and by correcting the way
  that the Open XML File Format Converter for Mac installs. For more information
  about the vulnerability, see the Frequently Asked Questions (FAQ) subsection
  for the specific vulnerability entry under the next section, Vulnerability
  Information.

  Recommendation. Microsoft recommends that customers apply the update at the
  earliest opportunity.

  Known Issues. Microsoft Knowledge Base Article 2027452 documents the
  currently known issues that customers may experience when installing this
  security update. The article also documents recommended solutions for these
  issues. When currently known issues and recommended solutions pertain only
  to specific releases of this software, this article provides links to
  further articles.

Affected Software

  Microsoft Office XP Service Pack 3
  Microsoft Office 2003 Service Pack 3
  2007 Microsoft Office System Service Pack 1
  2007 Microsoft Office System Service Pack 2
  Microsoft Office 2004 for Mac
  Microsoft Office 2008 for Mac
  Open XML File Format Converter for Mac
  Microsoft Office Excel Viewer Service Pack 1 and Microsoft Office Excel
    Viewer Service Pack 2
  Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007
    File Formats Service Pack 1 and Microsoft Office Compatibility Pack for
    Word, Excel, and PowerPoint 2007 File Formats Service Pack 2

Vulnerability Information

Excel Record Parsing Memory Corruption Vulnerability - CVE-2010-0821

  A remote code execution vulnerability exists in the way that Microsoft Office
  Excel handles specially crafted Excel files. An attacker who successfully
  exploited this vulnerability could take complete control of an affected system.
  An attacker could then install programs; view, change, or delete data; or
  create new accounts with full user rights.

Excel Object Stack Overflow Vulnerability - CVE-2010-0822

  A remote code execution vulnerability exists in the way that Microsoft Office
  Excel handles specially crafted Excel files. An attacker who successfully
  exploited this vulnerability could take complete control of an affected system.
  An attacker could then install programs; view, change, or delete data; or
  create new accounts with full user rights.

Excel Memory Corruption Vulnerability - CVE-2010-0823

  A remote code execution vulnerability exists in the way that Microsoft Office
  Excel handles specially crafted Excel files. An attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or delete
  data; or create new accounts with full user rights.

Excel Record Memory Corruption Vulnerability - CVE-2010-0824

  A remote code execution vulnerability exists in the way that Microsoft Office
  Excel handles specially crafted Excel files. An attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or
  delete data; or create new accounts with full user rights.

Excel Record Memory Corruption Vulnerability - CVE-2010-1245

  A remote code execution vulnerability exists in the way that Microsoft Office
  Excel handles specially crafted Excel files. An attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or
  delete data; or create new accounts with full user rights.

Excel RTD Memory Corruption Vulnerability - CVE-2010-1246

  A remote code execution vulnerability exists in the way that Microsoft Office
  Excel handles specially crafted Excel files. An attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or
  delete data; or create new accounts with full user rights.

Excel Memory Corruption Vulnerability - CVE-2010-1247

  A remote code execution vulnerability exists in the way that Microsoft Office
  Excel handles specially crafted Excel files. An attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or
  delete data; or create new accounts with full user rights.

Excel HFPicture Memory Corruption Vulnerability - CVE-2010-1248

  A remote code execution vulnerability exists in the way that Microsoft Office
  Excel handles specially crafted Excel files. An attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or
  delete data; or create new accounts with full user rights.

Excel Memory Corruption Vulnerability - CVE-2010-1249

  A remote code execution vulnerability exists in the way that Microsoft Office
  Excel handles specially crafted Excel files. An attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or
  delete data; or create new accounts with full user rights.

Excel EDG Memory Corruption Vulnerability - CVE-2010-1250

  A remote code execution vulnerability exists in the way that Microsoft Office
  Excel handles specially crafted Excel files. An attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or
  delete data; or create new accounts with full user rights.

Excel Record Stack Corruption Vulnerability - CVE-2010-1251

  A remote code execution vulnerability exists in the way that Microsoft Office
  Excel handles specially crafted Excel files. An attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or
  delete data; or create new accounts with full user rights.

Excel String Variable Vulnerability - CVE-2010-1252

  A remote code execution vulnerability exists in the way that Microsoft Office
  Excel handles specially crafted Excel files. An attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or
  delete data; or create new accounts with full user rights.

Excel ADO Object Vulnerability - CVE-2010-1253

  A remote code execution vulnerability exists in the way that Microsoft Office
  Excel handles specially crafted Excel files. An attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or
  delete data; or create new accounts with full user rights.

Mac Office Open XML Permissions Vulnerability - CVE-2010-1254

  An elevation of privilege vulnerability exists in the way that the Open XML
  File Format Converter for Mac installs itself. During installation, the
  Open XML File Format Converter for Mac changes the file system ACLs on the
  /Applications folder in a way that reduces the security settings on the
  /Applications folder and allows all access to the files in this folder. To
  exploit this vulnerability, an attacker would first have to log on to the
  system. An attacker could replace the Open XML File Format Converter for Mac
  with a malicious executable. When an administrator later logs on and runs
  the Open XML File Format Converter for Mac, the attacker-provided code can be
  made to execute, allowing the attacker to take complete control over an affected
  system.

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