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

                       AL-2008.0043 -- AUSCERT ALERT
                                   [Win]
     MS08-021 Vulnerabilities in GDI Could Allow Remote Code Execution
                               9 April 2008

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

Product:              GDI
Publisher:            Microsoft
Operating System:     Windows Server 2008
                      Windows Server 2008 x64
                      Windows Server 2008 Itanium
                      Windows Vista SP1
                      Windows Vista
                      Windows Vista x64 SP1
                      Windows Vista x64
                      Windows Server 2003 SP2
                      Windows Server 2003 SP1
                      Windows Server 2003 x64 SP2
                      Windows Server 2003 x64
                      Windows Server 2003 SP2 Itanium
                      Windows Server 2003 SP1 Itanium
                      Windows XP SP2
                      Windows XP Professional x64 SP2
                      Windows XP Professional x64
                      Windows 2000 SP4
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-1087 CVE-2008-1083

Original Bulletin:
  http://www.microsoft.com/technet/security/bulletin/ms08-021.mspx

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MS08-021 Vulnerabilities in GDI Could Allow Remote Code Execution

This security update resolves two privately reported vulnerabilities in
GDI. Exploitation of either of these vulnerabilities could allow remote
code execution if a user opens a specially crafted EMF or WMF image file.
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.

This is a critical security update for Microsoft Windows 2000 Service
Pack 4, and all supported releases of Windows XP, Windows Server 2003,
Windows Vista, and Windows Server 2008.

This security update addresses the vulnerability by modifying the way
that GDI handles integer calculations and string parameters.

Affected Software

   o Microsoft Windows 2000 Service Pack 4
   o Windows XP Service Pack 2
   o Windows XP Professional x64 Edition
   o Windows XP Professional x64 Edition Service Pack 2
   o Windows Server 2003 Service Pack 1
   o Windows Server 2003 Service Pack 2
   o Windows Server 2003 x64 Edition 
   o Windows Server 2003 x64 Edition Service Pack 2
   o Windows Server 2003 with SP1 for Itanium-based Systems
   o Windows Server 2003 with SP2 for Itanium based Systems
   o Windows Vista and Windows Vista Service Pack 1
   o Windows Vista x64 Edition
   o Windows Vista x64 Edition Service Pack 1
   o Windows Server 2008 for 32-bit Systems
   o Windows Server 2008 for x64-based Systems
   o Windows Server 2008 for Itanium-based Systems

Vulnerability Information

GDI Heap Overflow Vulnerability - CVE-2008-1083

A remote code execution vulnerability exists in the way that GDI handles
integer calculations. The vulnerability could allow remote code execution
if a user opens a specially crafted EMF or WMF image file. 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.

GDI Stack Overflow Vulnerability - CVE-2008-1087

A remote code execution vulnerability exists in the way that GDI handles
filename parameters in EMF files. The vulnerability could allow remote
code execution if a user opens a specially crafted EMF image file. 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.

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This security bulletin is provided as a service to AusCERT's members.  As
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        http://www.auscert.org.au/render.html?cid=1980

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

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

===========================================================================
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)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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