TITLE:
Microsoft Windows Client Service for NetWare Buffer Overflow

SECUNIA ADVISORY ID:
SA17165

VERIFY ADVISORY:
http://secunia.com/advisories/17165/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From local network

OPERATING SYSTEM:
Microsoft Windows XP Professional
http://secunia.com/product/22/
Microsoft Windows XP Home Edition
http://secunia.com/product/16/
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 Professional
http://secunia.com/product/1/
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 users, or by malicious people to compromise a
vulnerable system.

The vulnerability is caused due to a boundary error in the CSNW
(Client Service for NetWare). This can be exploited to execute
arbitrary code on a vulnerable system via a series of specially
crafted network messages.

Successful exploitation requires that the CSNW is installed. On
Windows Server 2003 Service Pack 1, the vulnerability can only be
exploited by a user with valid logon credentials.

SOLUTION:
Apply patches.

Microsoft Windows 2000 (requires SP4):
http://www.microsoft.com/downloads/details.aspx?FamilyId=261A7D4D-90FC-4529-9C4A-B630196C6A83

Microsoft Windows XP (requires SP1 or SP2):
http://www.microsoft.com/downloads/details.aspx?FamilyId=4C1C2C16-99E7-4701-A3F8-65B803B8B881

Microsoft Windows Server 2003 (with or without SP1):
http://www.microsoft.com/downloads/details.aspx?FamilyId=8AB86BA3-54CD-44D7-8016-DE6E3ED51021

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Kostya Kortchinsky, CERT RENATER.

ORIGINAL ADVISORY:
MS05-046 (KB899589):
http://www.microsoft.com/technet/security/Bulletin/MS05-046.mspx

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About:
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