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Microsoft Windows Print Spooler Buffer Overflow Vulnerability

Risk
High

Date Discovered
08-09-2005

Description
Microsoft Windows Print Spooler service is prone to a buffer overflow vulnerability.

Specifically, this issue takes place when the Print Spooler service handles malformed messages containing excessive data.

This vulnerability facilitates local privilege escalation and unauthorized remote access depending on the underlying operating system. A successful attack may result in arbitrary code execution, which can allow an attacker to gain SYSTEM privileges.

Symantec Vulnerability Assessment
Symantec Vulnerability Assessment detects and reports this vulnerability. Click here for the advisory released August 11, 2005.

Symantec Enterprise Security Manager
Symantec Enterprise Security Manager™ posted an update to the OS Patch Policy that detects and reports systems that are not patched against this vulnerability. Click here for the advisory released August 11, 2005.

Symantec Enterprise Security Manager Network Assessment Module
Symantec Enterprise Security Manager Network Assessment Module detects and reports this vulnerability. Click here for the advisory released August 25, 2005.

Platforms Affected
Avaya DefinityOne Media Servers
Avaya IP600 Media Servers
Avaya S3400 Message Application Server
Avaya S8100 Media Servers

Components Affected
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
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 Professional SP4
Microsoft Windows 2000 Professional SP3
Microsoft Windows 2000 Professional SP2
Microsoft Windows 2000 Professional SP1
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server SP4
Microsoft Windows 2000 Server SP3
Microsoft Windows 2000 Server SP2
Microsoft Windows 2000 Server SP1
Microsoft Windows 2000 Server
Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows Server 2003 Datacenter Edition 64-bit
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Enterprise Edition 64-bit
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Web Edition
Microsoft Windows XP Home SP2
Microsoft Windows XP Home SP1
Microsoft Windows XP Home
Microsoft Windows XP Media Center Edition SP2
Microsoft Windows XP Media Center Edition SP1
Microsoft Windows XP Media Center Edition
Microsoft Windows XP Professional SP2
Microsoft Windows XP Professional SP1
Microsoft Windows XP Professional
Microsoft Windows XP Tablet PC Edition SP2
Microsoft Windows XP Tablet PC Edition SP1
Microsoft Windows XP Tablet PC Edition

Recommendations
Permit local access for trusted individuals only. Where possible, use restricted environments and restricted shells.
Due to the possibility of local attacks against some affected operating systems, ensure that trusted users have local interactive access to vulnerable computers.

Block external access at the network boundary, unless service is required by external parties.
Use network access controls to regulate external access to computers at the network perimeter. Permit access for trusted or internal computers and networks only.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy a network intrusion detection sensor between the affected service and the network perimeter. Audit the logs regularly for indications of potential attacks.

Implement multiple redundant layers of security.
Memory protection schemes such as non-executable stack/heap configurations and randomly mapped memory segments may complicate exploitation of memory corruption vulnerabilities.

Microsoft has released fixes to address this vulnerability in supported platforms.


Microsoft Windows 2000 Advanced Server SP4:

Microsoft Upgrade Security Update for Windows 2000 (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=3DD3B530-7F43-4C18-8298-6E8797431A5D&displaylang=en

Microsoft Windows 2000 Advanced Server SP3:
Microsoft Windows 2000 Advanced Server SP2:
Microsoft Windows 2000 Advanced Server SP1:
Microsoft Windows 2000 Advanced Server :
Microsoft Windows 2000 Datacenter Server SP4:
Microsoft Upgrade Security Update for Windows 2000 (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=3DD3B530-7F43-4C18-8298-6E8797431A5D&displaylang=en

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 Professional SP4:
Microsoft Upgrade Security Update for Windows 2000 (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=3DD3B530-7F43-4C18-8298-6E8797431A5D&displaylang=en

Microsoft Windows 2000 Professional SP3:
Microsoft Windows 2000 Professional SP2:
Microsoft Windows 2000 Professional SP1:
Microsoft Windows 2000 Professional :
Microsoft Windows 2000 Server SP4:
Microsoft Upgrade Security Update for Windows 2000 (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=3DD3B530-7F43-4C18-8298-6E8797431A5D&displaylang=en

Microsoft Windows 2000 Server SP3:
Microsoft Windows 2000 Server SP2:
Microsoft Windows 2000 Server SP1:
Microsoft Windows 2000 Server :
Microsoft Windows Server 2003 Datacenter Edition :
Microsoft Upgrade Security Update for Windows Server 2003 (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=25469675-DF28-4889-8D13-25EFCD498388&displaylang=en

Microsoft Windows Server 2003 Datacenter Edition 64-bit :
Microsoft Upgrade Security Update for Windows Server 2003 64-bit Itanium Edition (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=F0AEC064-34A3-4EE4-9F15-BE1E3DD02BC7&displaylang=en

Microsoft Windows Server 2003 Enterprise Edition :
Microsoft Upgrade Security Update for Windows Server 2003 (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=25469675-DF28-4889-8D13-25EFCD498388&displaylang=en

Microsoft Windows Server 2003 Enterprise Edition 64-bit :
Microsoft Upgrade Security Update for Windows Server 2003 64-bit Itanium Edition (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=F0AEC064-34A3-4EE4-9F15-BE1E3DD02BC7&displaylang=en

Microsoft Windows Server 2003 Standard Edition :
Microsoft Upgrade Security Update for Windows Server 2003 (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=25469675-DF28-4889-8D13-25EFCD498388&displaylang=en

Microsoft Windows Server 2003 Web Edition :
Microsoft Upgrade Security Update for Windows Server 2003 (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=25469675-DF28-4889-8D13-25EFCD498388&displaylang=en

Microsoft Windows XP Home SP2:
Microsoft Upgrade Security Update for Windows XP (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=EF402946-1C3B-47E9-9D51-77D890DF8725&displaylang=en

Microsoft Windows XP Home SP1:
Microsoft Upgrade Security Update for Windows XP (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=EF402946-1C3B-47E9-9D51-77D890DF8725&displaylang=en

Microsoft Windows XP Home :
Microsoft Windows XP Media Center Edition SP2:
Microsoft Upgrade Security Update for Windows XP (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=EF402946-1C3B-47E9-9D51-77D890DF8725&displaylang=en

Microsoft Windows XP Media Center Edition SP1:
Microsoft Upgrade Security Update for Windows XP (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=EF402946-1C3B-47E9-9D51-77D890DF8725&displaylang=en

Microsoft Windows XP Media Center Edition :
Microsoft Windows XP Professional SP2:
Microsoft Upgrade Security Update for Windows XP (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=EF402946-1C3B-47E9-9D51-77D890DF8725&displaylang=en

Microsoft Windows XP Professional SP1:
Microsoft Upgrade Security Update for Windows XP (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=EF402946-1C3B-47E9-9D51-77D890DF8725&displaylang=en

Microsoft Windows XP Professional :
Microsoft Windows XP Tablet PC Edition SP2:
Microsoft Upgrade Security Update for Windows XP (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=EF402946-1C3B-47E9-9D51-77D890DF8725&displaylang=en

Microsoft Windows XP Tablet PC Edition SP1:
Microsoft Upgrade Security Update for Windows XP (KB896423)
http://www.microsoft.com/downloads/details.aspx?familyid=EF402946-1C3B-47E9-9D51-77D890DF8725&displaylang=en

Microsoft Windows XP Tablet PC Edition :

References
Source: Microsoft Security Bulletin MS05-043
URL: http://www.microsoft.com/technet/security/Bulletin/MS05-043.mspx

Credits
Discovery is credited to Kostya Kortchinsky from CERT RENATER.


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