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Title: Microsoft Windows Plug and Play Buffer Overflow Vulnerability

Severity: CRITICAL

Description:

Microsoft Windows Plug and Play (PnP) service is used by the operating system to detect new hardware.

The PnP service is prone to a buffer-overflow vulnerability because it fails to perform boundary checks prior to copying user-supplied data into sensitive process buffers.

Specifically, this issue takes place when the PnP service handles malformed messages containing excessive data. These messages are passed to a finite-sized buffer, triggering an overflow condition and facilitating memory corruption. A successful attack may allow arbitrary code to run, resulting in the attacker gaining SYSTEM privileges.

This vulnerability may allow local attackers to escalate privileges and remote attackers to gain unauthorized access, depending on the underlying operating system. A remote unauthenticated attacker can exploit this issue on Windows 2000. It is conjectured that on Windows 2000, an attacker would likely exploit this issue using NULL session enumeration to gain access. On Windows XP SP1, a remote attacker must authenticate over RPC to exploit this issue. Windows XP SP2 and Windows Server 2003 require an attacker to have local access to an affected computer for successful exploitation.

Microsoft has reported that other protocols such as Internetwork Packet Exchange (IPX) and Sequenced Packet Exchange (SPX) may be vulnerable to this issue as well. This has not been confirmed.

Reports indicate that this issue may lend itself to the development of self-propagating malicious code due to the lack of user interaction and authentication required for exploitation against Windows 2000.

** A worm exploiting this vulnerability has been reported in the wild. Users are advised to deploy patches or implement appropriate mitigation -- such as blocking TCP port 445 at the network boundary -- against the exploitation of this vulnerability.

UPDATE (8/23/2005): While investigating this vulnerability, the DeepSight Threat Analyst Team has been able to carry out anonymous remote exploitation against certain nondefault configurations of Windows XP SP1. The attack vector appears when the "Guest" account is both enabled and removed from the "Deny access to this computer from the network" entry in the "User Rights Assignment" Security Policy. This can happen when Simple File and Print Sharing has been enabled, for example by sharing a folder or a printer with the local network. Note that Simple File and Print Sharing is available only on Windows XP machines that are not part of a Windows Active Directory Domain. However, configuring a Windows XP SP1 host to share network resources prior to joining an Active Directory Domain will leave it in the vulnerable state even after the Domain is joined.

Note also that Windows XP SP2 is not prone to this exploitation method. Furthermore, there is no change to Microsoft Security Bulletin MS05-039. Customers who have deployed this update are protected from this issue.

In light of this finding, Microsoft has issued new information regarding the patch for the Microsoft Windows Plug and Play Buffer Overflow Vulnerability (see Security Bulletin 906574: http://www.microsoft.com/technet/security/advisory/906574.mspx).

Affected Products:

• Avaya DefinityOne Media Servers
• Avaya IP600 Media Servers
• Avaya S3400 Message Application Server
• Avaya S8100 Media Servers
• Cisco Broadband Troubleshooter 0.0.0
• Cisco Building Broadband Service Manager 2.5.1
• Cisco Building Broadband Service Manager 3.0.0
• Cisco Building Broadband Service Manager 4.0.1
• Cisco Building Broadband Service Manager 4.2.0
• Cisco Building Broadband Service Manager 4.3.0
• Cisco Building Broadband Service Manager 4.4.0
• Cisco Building Broadband Service Manager 4.5.0
• Cisco Building Broadband Service Manager 5.0.0
• Cisco Building Broadband Service Manager 5.1.0
• Cisco Building Broadband Service Manager 5.2.0
• Cisco CNS Network Registrar 6.0.0
• Cisco CNS Network Registrar 6.0.1
• Cisco CNS Network Registrar 6.0.2
• Cisco CNS Network Registrar 6.0.3
• Cisco CNS Network Registrar 6.0.4
• Cisco CNS Network Registrar 6.0.5
• Cisco CNS Network Registrar 6.0.5 .2
• Cisco CNS Network Registrar 6.0.5 .3
• Cisco CNS Network Registrar 6.0.5 .4
• Cisco CNS Network Registrar 6.1.0
• Cisco CNS Network Registrar 6.1.1
• Cisco CNS Network Registrar 6.1.1 .1
• Cisco CNS Network Registrar 6.1.1 .2
• Cisco CNS Network Registrar 6.1.1 .3
• Cisco CNS Network Registrar 6.1.1 .4
• Cisco Call Manager 1.0.0
• Cisco Call Manager 2.0.0
• Cisco Call Manager 3.0.0
• Cisco Call Manager 3.1.0
• Cisco Call Manager 3.1.0(2)
• Cisco Call Manager 3.1.0(3a)
• Cisco Call Manager 3.2.0
• Cisco Call Manager 3.3.0
• Cisco Call Manager 3.3.0 (3)ES61
• Cisco Call Manager 3.3.0 (4)ES25
• Cisco Call Manager 3.3.0 (5)
• Cisco Call Manager 3.3.0(3)
• Cisco Call Manager 4.0.0
• Cisco Call Manager 4.0.0 (2a)ES40
• Cisco Call Manager 4.0.0 (2a)SR2b
• Cisco Call Manager 4.1.0 (2)ES33
• Cisco Call Manager 4.1.0 (3)ES07
• Cisco Call Manager 4.1.0 (3)SR1
• Cisco CiscoWorks
• Cisco Collaboration Server 3.0.0
• Cisco Collaboration Server 3.0.0 1
• Cisco Collaboration Server 3.0.0 2
• Cisco Collaboration Server 4.0.0
• Cisco Collaboration Server 5.0.0
• Cisco Computer Telephony Integration Option
• Cisco Conference Connection 1.1.0(1)
• Cisco Conference Connection 1.2.0
• Cisco Customer Response Application Server 0.0.0
• Cisco Customer Voice Portal
• Cisco DOCSIS CPE Configurator 0.0.0
• Cisco E-Mail Manager 0.0.0
• Cisco Emergency Responder 1.1.0
• Cisco ICM Enterprise Edition
• Cisco ICM Hosted Edition
• Cisco IP Contact Center Enterprise 0.0.0
• Cisco IP Contact Center Express 0.0.0
• Cisco IP Contact Center Hosted
• Cisco IP Contact Center Remote Agent
• Cisco IP Interactive Voice Response (IP IVR) 3.0.0
• Cisco IP Queue Manager
• Cisco IP/VC 3540 Application Server 0.0.0
• Cisco IP/VC 3540 Video Rate Matching Module 0.0.0
• Cisco Media Blender 0.0.0
• Cisco Networking Services for Active Directory 0.0.0
• Cisco Outbound Option
• Cisco Personal Assistant 1.3.0(1)
• Cisco Personal Assistant 1.3.0(2)
• Cisco Personal Assistant 1.3.0(3)
• Cisco Personal Assistant 1.3.0(4)
• Cisco Personal Assistant 1.4.0(1)
• Cisco Personal Assistant 1.4.0(2)
• Cisco Remote Monitoring Suite Option
• Cisco SN5400 series storage routers
• Cisco Support Tools
• Cisco Trailhead 0.0.0
• Cisco Transport Manager 0.0.0
• Cisco Unity Server 2.0.0
• Cisco Unity Server 2.1.0
• Cisco Unity Server 2.2.0
• Cisco Unity Server 2.3.0
• Cisco Unity Server 2.4.0
• Cisco Unity Server 2.46.0
• Cisco Unity Server 3.0.0
• Cisco Unity Server 3.1.0
• Cisco Unity Server 3.2.0
• Cisco Unity Server 3.3.0
• Cisco Unity Server 4.0.0
• Cisco VoIP Phone 7902G
• Cisco VoIP Phone 7905G
• Cisco VoIP Phone 7912G
• Cisco Web Collaboration Option
• Microsoft Windows 2000 Advanced Server
• Microsoft Windows 2000 Advanced Server SP1
• Microsoft Windows 2000 Advanced Server SP2
• Microsoft Windows 2000 Advanced Server SP3
• Microsoft Windows 2000 Advanced Server SP4
• Microsoft Windows 2000 Datacenter Server
• Microsoft Windows 2000 Datacenter Server SP1
• Microsoft Windows 2000 Datacenter Server SP2
• Microsoft Windows 2000 Datacenter Server SP3
• Microsoft Windows 2000 Datacenter Server SP4
• Microsoft Windows 2000 Professional
• Microsoft Windows 2000 Professional SP1
• Microsoft Windows 2000 Professional SP2
• Microsoft Windows 2000 Professional SP3
• Microsoft Windows 2000 Professional SP4
• Microsoft Windows 2000 Server
• Microsoft Windows 2000 Server SP1
• Microsoft Windows 2000 Server SP2
• Microsoft Windows 2000 Server SP3
• Microsoft Windows 2000 Server SP4
• Microsoft Windows 2000 Terminal Services
• Microsoft Windows 2000 Terminal Services SP1
• Microsoft Windows 2000 Terminal Services SP2
• Microsoft Windows Server 2003 Datacenter Edition
• Microsoft Windows Server 2003 Datacenter Edition Itanium
• Microsoft Windows Server 2003 Datacenter Edition Itanium SP1
• Microsoft Windows Server 2003 Datacenter Edition SP1
• Microsoft Windows Server 2003 Datacenter x64 Edition
• Microsoft Windows Server 2003 Enterprise Edition
• Microsoft Windows Server 2003 Enterprise Edition Itanium
• Microsoft Windows Server 2003 Enterprise Edition Itanium SP1
• Microsoft Windows Server 2003 Enterprise Edition SP1
• Microsoft Windows Server 2003 Enterprise x64 Edition
• Microsoft Windows Server 2003 Standard Edition
• Microsoft Windows Server 2003 Standard Edition SP1
• Microsoft Windows Server 2003 Standard x64 Edition
• Microsoft Windows Server 2003 Web Edition
• Microsoft Windows Server 2003 Web Edition SP1
• Microsoft Windows XP Home
• Microsoft Windows XP Home SP1
• Microsoft Windows XP Home SP2
• Microsoft Windows XP Media Center Edition
• Microsoft Windows XP Media Center Edition SP1
• Microsoft Windows XP Media Center Edition SP2
• Microsoft Windows XP Professional
• Microsoft Windows XP Professional SP1
• Microsoft Windows XP Professional SP2
• Microsoft Windows XP Professional x64 Edition
• Microsoft Windows XP Tablet PC Edition
• Microsoft Windows XP Tablet PC Edition SP1
• Microsoft Windows XP Tablet PC Edition SP2

References:

• Cisco: Cisco Security Notice 66097 - ZOTOB and WORM_RBOT.CBQ Mitigation Recommendations
• Internet Security Systems: Windows Plug and Play Remote Compromise
• Microsoft: Microsoft Security Advisory (906574) - Clarification of Simple File Sharing and
• Microsoft: Microsoft Security Bulletin MS05-039
• sl0ppy@hush.ai: [VulnDiscuss] FW: [Full-disclosure] Windows 2000 universal exploit for MS05-039

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