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                                    CERT-Renater

                         Note d'Information No. 2008/VULN033
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DATE                      : 13/02/2008

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Windows 2000, Windows XP, Windows Server
                              2003, Windows Vista, Mac OS X.

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MS08-008 - Critical - Vulnerability in OLE Automation Could Allow Remote
Code Execution (947890)

    Published: February 12, 2008
    Version: 1.0

    This critical security update resolves a privately reported
    vulnerability. This vulnerability could allow remote code execution if
    a user viewed a specially crafted Web page. The vulnerability could be
    exploited through attacks on Object Linking and Embedding (OLE)
    Automation. 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.


Affected Software

    o Windows 2000 Service Pack 4

    o Windows XP Service Pack 2

    o Windows XP Professional x64 Edition and Windows XP Professional x64
      Edition Service Pack 2

    o Windows Server 2003 Service Pack 1 and Windows Server 2003 Service
      Pack 2

    o Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition
      Service Pack 2

    o Windows Server 2003 with SP1 for Itanium-based Systems and Windows
      Server 2003 with SP2 for Itanium-based Systems

    o Windows Vista

    o Windows Vista x64 Edition

    o Microsoft Office 2004 for Mac

    o Microsoft Visual Basic 6.0 Service Pack 6


Vulnerability Information

OLE Heap Overrun Vulnerability - CVE-2007-0065

    A remote code execution vulnerability exists in Object Linking and
    Embedding (OLE) Automation that could allow an attacker who successfully
    exploited this vulnerability to make changes to the system with the
    permissions of the logged-on user. If a user is logged on with
    administrative user rights, an attacker could take complete control of
    the affected system. An attacker could then install programs; view,
    change, or delete data; or create new accounts with full user rights.
    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.

Workarounds for OLE Heap Overrun Vulnerability - CVE-2007-0065

    o Disable attempts to instantiate the Microsoft Forms 2.0 ImageActiveX
      Control in Internet Explorer

    o Configure Internet Explorer to prompt before running Active Scripting
      or to disable Active Scripting in the Internet and Local intranet
      security zone

    o Set Internet and Local intranet security zone settings to "High" to
      prompt before running ActiveX Controls and Active Scripting in these
      zones

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