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Microsoft Windows Server Service Two Vulnerabilities
Secunia Advisory: SA21007
Release Date: 2006-07-11
Last Update: 2006-08-13
Popularity: 12,674 views

Critical:
Moderately critical
Impact: Exposure of system information
System access
Where: From local network
Solution Status: Vendor Patch

OS:Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Web Edition
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional

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CVE reference:CVE-2006-1314
CVE-2006-1315


Description:
Two vulnerabilities have been reported in Microsoft Windows, which can be exploited by malicious people to expose sensitive information and compromise a vulnerable system.

1) A boundary error in the Server service (SRV.SYS) when handling first-class Mailslot messages can be exploited to corrupt memory by sending a specially crafted packet to the service.

Successful exploitation allows execution of arbitrary code.

2) An uninitialised buffer in the Server protocol driver can be exploited to view data from the Server Message Block buffers by sending specially crafted packets to the service.

Solution:
Apply patches:

Microsoft Windows 2000 SP4:
http://www.microsoft.com/downloads/de...=b207020d-90f7-4c41-8304-06af0ded6467

Microsoft Windows XP SP1 / SP2:
http://www.microsoft.com/downloads/de...=2592a44c-82fb-4ccd-82a6-fcac7ca33172

Microsoft Windows XP Professional x64 Edition:
http://www.microsoft.com/downloads/de...=b0f67167-7ede-4355-af6f-50c6615f6bbd

Microsoft Windows Server 2003 (with or without SP1):
http://www.microsoft.com/downloads/de...=48f03ad7-38f9-48f4-bbfc-14c52e9c942a

Microsoft Windows Server 2003 for Itanium-based Systems (with or without SP1):
http://www.microsoft.com/downloads/de...=41a4a07f-bea3-48d6-b8d2-d7a5600d7179

Microsoft Windows Server 2003 x64 Edition:
http://www.microsoft.com/downloads/de...=dfbf3fa6-9e11-48b4-894d-5436693d17f7

Provided and/or discovered by:
1) Pedram Amini, TippingPoint Security Research Team working with HD Moore.
2) Mike Price and Rafal Wojtczuk of McAfee Avert Labs (the vendor alsocredits Nicolas Pouvesle, Tenable Network Security).

Changelog:
2006-07-12: Added link to US-CERT vulnerability note. Added additional information from TippingPoint and McAfee.
2006-07-20: Added link to US-CERT vulnerability note.
2006-08-13: Updated link to Windows XP SP1/SP2 patches.

Original Advisory:
MS06-035 (KB917159):
http://www.microsoft.com/technet/security/Bulletin/MS06-035.mspx

TippingPoint:
http://www.tippingpoint.com/security/advisories/TSRT-06-02.html

Other References:
US-CERT VU#189140:
http://www.kb.cert.org/vuls/id/189140

US-CERT VU#333636:
http://www.kb.cert.org/vuls/id/333636


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