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2003: 2,700 advisories published
2004: 3,100 advisories published
2005: 4,600 advisories published
2006: 5,300 advisories published

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TITLE:
Microsoft Windows DNS Service Cache Poisoning Vulnerability

SECUNIA ADVISORY ID:
SA27584

VERIFY ADVISORY:
http://secunia.com/advisories/27584/

CRITICAL:
Moderately critical

IMPACT:
Spoofing

WHERE:
>From remote

REVISION:
1.2 originally posted 2007-11-13

OPERATING SYSTEM:
Microsoft Windows Server 2003 Web Edition
http://secunia.com/product/1176/
Microsoft Windows Server 2003 Standard Edition
http://secunia.com/product/1173/
Microsoft Windows Server 2003 Enterprise Edition
http://secunia.com/product/1174/
Microsoft Windows Server 2003 Datacenter Edition
http://secunia.com/product/1175/
Microsoft Windows 2000 Server
http://secunia.com/product/20/
Microsoft Windows 2000 Datacenter Server
http://secunia.com/product/1177/
Microsoft Windows 2000 Advanced Server
http://secunia.com/product/21/

DESCRIPTION:
A vulnerability has been reported in Microsoft Windows, which can be
exploited by malicious people to poison the DNS cache.

The vulnerability is caused due to the DNS service (dns.exe) using
predictable transaction values when sending out queries to upstream
DNS servers. This can be exploited to poison the DNS cache via a
specially crafted DNS response with a guessed transaction value when
the DNS server performs a recursive lookup.

SOLUTION:
Apply patches.

Microsoft Windows 2000 Server SP4:
http://www.microsoft.com/downloads/details.aspx?FamilyId=c80fcd9b-d0f8-44db-96fc-bf2ead054ff4

Windows Server 2003 SP1/SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyId=ed8e2cb4-bcd9-40fc-9ad6-46b364d0656d

Windows Server 2003 x64 Edition (optionally with SP2):
http://www.microsoft.com/downloads/details.aspx?FamilyId=d1323e14-ffa7-4d03-a2a7-9240c192a75e

Windows Server 2003 with SP1/SP2 for Itanium-based systems:
http://www.microsoft.com/downloads/details.aspx?FamilyId=f3ad67de-85ad-452d-a1e0-0af3faf969d6

PROVIDED AND/OR DISCOVERED BY:
The vendor credits:
* Amit Klein, Trusteer.
* Alla Berzroutchko, Scanit.

CHANGELOG:
2007-11-14: Added link to US-CERT. Added link to Scanit.

ORIGINAL ADVISORY:
MS07-062 (KB941672):
http://www.microsoft.com/technet/security/Bulletin/MS07-062.mspx

Scanit:
http://www.scanit.be/advisory-2007-11-14.html

OTHER REFERENCES:
US-CERT VU#484649:
http://www.kb.cert.org/vuls/id/484649

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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