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A  U  S  C  E  R  T                                           A  L  E  R  T

                       AL-2008.0124 -- AUSCERT ALERT
                                   [Win]
          MS08-075 - Critical - Vulnerabilities in Windows Search
                     Could Allow Remote Code Execution
                             10 December 2008

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        AusCERT Alert Summary
        ---------------------

Product:              Windows Vista and Windows Vista Service Pack 1
                      Windows Vista x64 Edition and Windows Vista x64 
                        Edition Service Pack 1
                      Windows Server 2008 for 32-bit Systems*
                      Windows Server 2008 for x64-based Systems*
                      Windows Server 2008 for Itanium-based Systems
Publisher:            Microsoft
Operating System:     Windows
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-4268 CVE-2008-4269

Original Bulletin:    
  http://www.microsoft.com/technet/security/Bulletin/ms08-075.mspx

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Microsoft Security Bulletin MS08-075 - Critical

Vulnerabilities in Windows Search Could Allow Remote Code Execution (959349)

   Published: December 9, 2008

   Version: 1.0

General Information

Executive Summary

   This security update resolves two privately reported vulnerabilities in 
   Windows Search. These vulnerabilities could allow remote code execution 
   if a user opens and saves a specially crafted saved-search file within 
   Windows Explorer or if a user clicks a specially crafted search URL. An 
   attacker who successfully exploited these vulnerabilities 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. 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.

   The most severe vulnerability is rated Critical for all supported editions 
   of Windows Vista and Windows Server 2008. For more information, see the 
   subsection, Affected and Non-Affected Software, in this section.

   The security update addresses the vulnerabilities by modifying the way 
   that Windows Explorer frees memory when saving Windows Search files and by 
   modifying the way that Windows Explorer interprets parameters when parsing 
   the search-ms protocol. For more information about the vulnerabilities, 
   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 
   immediately.

   Known Issues. None

Affected Software

   Windows Vista and Windows Vista Service Pack 1

   Windows Vista x64 Edition and Windows Vista x64 Edition Service Pack 1

   Windows Server 2008 for 32-bit Systems*

   Windows Server 2008 for x64-based Systems*

   Windows Server 2008 for Itanium-based Systems

   * Windows Server 2008 server core installation not affected. The 
   vulnerabilities addressed by these updates do not affect supported 
   editions of Windows Server 2008 if Windows Server 2008 was installed 
   using the Server Core installation option, even though the files affected 
   by these vulnerabilities may be present on the system. However, users with
   the affected files will still be offered this update because the update 
   files are newer (with higher version numbers) than the files that are 
   currently on your system.

Vulnerability Information

Windows Saved Search Vulnerability - CVE-2008-4268

   A remote code execution vulnerability exists when saving a specially 
   crafted search file within Windows Explorer. This operation causes Windows 
   Explorer to exit and restart in an exploitable manner.

Windows Search Parsing Vulnerability - CVE-2008-4269

   A remote code execution vulnerability exists in Windows Explorer that 
   allows an attacker to construct a malicious web page that includes a call 
   to the search-ms protocol handler. The protocol handler in turn passes 
   untrusted data to Windows Explorer.

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Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
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