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                                    CERT-Renater

                         Note d'Information No. 2008/VULN279
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DATE                      : 09/07/2008

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Windows running Windows Domain Name System.

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http://www.microsoft.com/technet/security/bulletin/ms08-037.mspx
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Microsoft Security Bulletin MS08-037 Important

This security update resolves two privately reported vulnerabilities in
the Windows Domain Name System (DNS) that could allow spoofing. These
vulnerabilities exist in both the DNS client and DNS server and could 
allow a remote attacker to redirect network traffic intended for systems
on the Internet to the attacker’s own systems.

This security update is rated Important for all supported editions of
Microsoft Windows 2000, Windows XP, Windows Server 2003, 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 using strongly
random DNS transaction IDs, using random sockets for UDP queries, and
updating the logic used to manage the DNS cache. 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 953230 documents the currently known
issues that customers may experience when they install this security
update.

Affected Software:

     - DNS client update for Microsoft Windows 2000 Service Pack 4
     - DNS Server update for Microsoft Windows 2000 Server Service
       Pack 4
     - DNS client update for Windows XP Service Pack 2 and
       Windows XP Service Pack 3
     - DNS client update for Windows XP Professional x64 Edition and
       Windows XP Professional x64 Edition Service Pack 2
     - DNS client update for Windows Server 2003 Service Pack 1 and
       Windows Server 2003 Service Pack 2
     - DNS server update for Windows Server 2003 Service Pack 1 and
       Windows Server 2003 Service Pack 2
     - DNS client update for Windows Server 2003 x64 Edition and
       Windows Server 2003 x64 Edition Service Pack 2
     - DNS server update for Windows Server 2003 x64 Edition and
       Windows Server 2003 x64 Edition Service Pack 2
     - DNS client update for Windows Server 2003 with SP1 for
       Itanium-based Systems and
       Windows Server 2003 with SP2 for Itanium-based Systems
     - DNS server update for Windows Server 2003 with SP1 for
       Itanium-based Systems and
       Windows Server 2003 with SP2 for Itanium-based Systems
     - DNS server update for Windows Server 2008 for 32-bit Systems
       (Windows Server 2008 Server Core installation affected)
     - DNS server update for Windows Server 2008 for x64-based
       Systems (Windows Server 2008 Server Core installation affected)

Non-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 Itanium-based Systems

Vulnerability Information

DNS Insufficient Socket Entropy Vulnerability - CVE-2008-1447

A spoofing vulnerability exists in Windows DNS client and Windows DNS 
server.
This vulnerability could allow a remote unauthenticated attacker to
quickly and reliably spoof responses and insert records into the DNS
server or client cache, thereby redirecting Internet traffic.

	
DNS Cache Poisoning Vulnerability - CVE-2008-1454

A cache poisoning vulnerability exists in Windows DNS Server. The
vulnerability could allow an unauthenticated remote attacker to send
specially crafted responses to DNS requests made by vulnerable systems,
thereby poisoning the DNS cache and redirecting Internet traffic from
legitimate locations.

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