Microsoft Windows Server Service Remote Buffer Overflow Vulnerability

TITLE: Microsoft Windows Server Service Remote Buffer Overflow Vulnerability
CLASS: Boundary Condition Error
CVE: CVE-2006-3439

REMOTE: Yes
LOCAL: No
PUBLISHED: Aug 08 2006 12:00AM
UPDATE: Aug 16 2006 11:10PM
CREDIT: US-CERT and SANS are credited with providing information about this issue. The individual responsible for discovering this issue is currently unknown.
VULNERABLE:

Microsoft Windows XP Tablet PC Edition SP2
Microsoft Windows XP Tablet PC Edition SP1
Microsoft Windows XP Tablet PC Edition
Microsoft Windows XP Professional x64 Edition
Microsoft Windows XP Professional SP2
Microsoft Windows XP Professional SP1
Microsoft Windows XP Professional
Microsoft Windows XP Media Center Edition SP2
Microsoft Windows XP Media Center Edition SP1
Microsoft Windows XP Media Center Edition
Microsoft Windows XP Home SP2
Microsoft Windows XP Home SP1
Microsoft Windows XP Home
Microsoft Windows Server 2003 Web Edition SP1
Microsoft Windows Server 2003 Web Edition
Microsoft Windows Server 2003 Standard x64 Edition
Microsoft Windows Server 2003 Standard Edition SP1
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Enterprise x64 Edition
Microsoft Windows Server 2003 Enterprise Edition Itanium SP1
Microsoft Windows Server 2003 Enterprise Edition Itanium 0
Microsoft Windows Server 2003 Enterprise Edition SP1
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Datacenter x64 Edition
Microsoft Windows Server 2003 Datacenter Edition Itanium SP1
Microsoft Windows Server 2003 Datacenter Edition Itanium 0
Microsoft Windows Server 2003 Datacenter Edition SP1
Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows 2000 Server SP4
Microsoft Windows 2000 Server SP3
Microsoft Windows 2000 Server SP2
Microsoft Windows 2000 Server SP1
Microsoft Windows 2000 Server
+ Avaya DefinityOne Media Servers
+ Avaya IP600 Media Servers
+ Avaya S3400 Message Application Server
+ Avaya S8100 Media Servers
Microsoft Windows 2000 Professional SP4
Microsoft Windows 2000 Professional SP3
Microsoft Windows 2000 Professional SP2
Microsoft Windows 2000 Professional SP1
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Datacenter Server SP4
Microsoft Windows 2000 Datacenter Server SP3
Microsoft Windows 2000 Datacenter Server SP2
Microsoft Windows 2000 Datacenter Server SP1
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Advanced Server SP4
Microsoft Windows 2000 Advanced Server SP3
Microsoft Windows 2000 Advanced Server SP2
Microsoft Windows 2000 Advanced Server SP1
Microsoft Windows 2000 Advanced Server
NOT VULNERABLE:

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Discussion

Microsoft Windows Server Service is prone to a remote buffer-overflow vulnerability.

This vulnerability arises when the service processes a malicious message in RPC communications.

A successful attack may result in arbitrary code execution with SYSTEM privileges leading to a full compromise. Attack attempts may result in denial-of-service conditions as well.

Microsoft has reported that this issue is being exploited in the wild.

Update (August 14, 2006): A worm named 'W32.Wargbot' that exploits this issue to spread is currently in the wild.

Exploit

Although Microsoft has reported that this issue is being exploited in the wild, we are not aware of any publicly available exploits for this issue. If you feel we are in error or if you are aware of more recent information, please mail us at: vuldb@securityfocus.com.

A proof-of-concept exploit is available to members of the Immunity Partners program:

https://www.immunityinc.com/downloads/immpartners/ms06_040.tgz

A Metasploit exploit module is available. It reportedly works against Windows NT 4.0, Windows 2000, Windows 2000 SP1 - SP4, Windows XP, and Windows XP SP1. It may result in a denial-of-service condition for Windows XP SP2 and Windows 2003 SP1.

Solution

Solution:
Microsoft has released an advisory including fixes to address this issue.

A Cisco advisory containing various mitigation strategies using Cisco products to prevent attacks is available. Please see the references for more information.


Microsoft Windows Server 2003 Datacenter Edition SP1


Microsoft Windows Server 2003 Datacenter x64 Edition

Microsoft Windows Server 2003 Enterprise Edition SP1

Microsoft Windows XP Media Center Edition SP2

Microsoft Windows Server 2003 Datacenter Edition

Microsoft Windows 2000 Advanced Server SP4

Microsoft Windows Server 2003 Enterprise Edition Itanium SP1

Microsoft Windows XP Tablet PC Edition SP1

Microsoft Windows Server 2003 Enterprise Edition

Microsoft Windows XP Home SP2

Microsoft Windows 2000 Datacenter Server SP4

Microsoft Windows XP Tablet PC Edition SP2

Microsoft Windows XP Media Center Edition SP1

Microsoft Windows Server 2003 Web Edition

Microsoft Windows XP Home SP1

Microsoft Windows XP Professional x64 Edition

Microsoft Windows Server 2003 Web Edition SP1

Microsoft Windows Server 2003 Enterprise Edition Itanium 0

Microsoft Windows Server 2003 Standard Edition SP1

Microsoft Windows Server 2003 Standard Edition

Microsoft Windows XP Professional SP2

Microsoft Windows Server 2003 Datacenter Edition Itanium SP1

Microsoft Windows Server 2003 Standard x64 Edition

Microsoft Windows 2000 Server SP4

Microsoft Windows 2000 Professional SP4

Microsoft Windows Server 2003 Enterprise x64 Edition

Microsoft Windows XP Professional SP1

Microsoft Windows Server 2003 Datacenter Edition Itanium 0

References

References:

PhpLog

BNLug Benevento Linux Users Group