Signature Detail

MS-RPC: Microsoft Distributed Transaction Coordinator Overflow

This signature detects attempts to exploit a known vulnerability in the Microsoft Distributed Transaction Coordinator (msdtc.exe) process. A successful exploit can result in remote code execution with System privileges. You should use this signature to examine Internet-facing connections.

Extended Description

The Microsoft Windows MSDTC (Microsoft Distribution Transaction Coordinator) service is prone to a memory corruption vulnerability. This issue could allow for execution of arbitrary code in the context of the service. The vulnerability may be remotely exploitable in some circumstances, but will also permit local privilege escalation. This issue is remotely exploitable on Windows 2000 platforms, since the Network DTC is enabled by default on this platform. On Windows XP, this issue may be remotely exploitable if a local user has started the service. On Windows Server 2003, this vulnerability is limited to local privilege escalation unless Network DTC has been explicitly enabled by an administrator. This issue is not present on Windows XP SP2 and Windows Server 2003 SP1. Update: Microsoft reports several systems have experienced one or more problems after installing the critical update from Microsoft Security Bulletin MS05-051 for this issue. For a more detailed explanation of these problems please see the attached microsoft knowledge base article 909444.

Affected Products

• Avaya DefinityOne Media Servers R10
• Avaya DefinityOne Media Servers R11
• Avaya DefinityOne Media Servers R12
• Avaya DefinityOne Media Servers R6
• Avaya DefinityOne Media Servers R7
• Avaya DefinityOne Media Servers R8
• Avaya DefinityOne Media Servers R9
• Avaya DefinityOne Media Servers
• Avaya IP600 Media Servers R10
• Avaya IP600 Media Servers R11
• Avaya IP600 Media Servers R12
• Avaya IP600 Media Servers R6
• Avaya IP600 Media Servers R7
• Avaya IP600 Media Servers R8
• Avaya IP600 Media Servers R9
• Avaya IP600 Media Servers
• Avaya S3400 Message Application Server
• Avaya S8100 Media Servers R10
• Avaya S8100 Media Servers R11
• Avaya S8100 Media Servers R12
• Avaya S8100 Media Servers R6
• Avaya S8100 Media Servers R7
• Avaya S8100 Media Servers R8
• Avaya S8100 Media Servers R9
• Avaya S8100 Media Servers
• Avaya Unified Communication Center
• 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 Advanced 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 Datacenter Server
• Microsoft Windows 2000 Professional SP1
• Microsoft Windows 2000 Professional SP2
• Microsoft Windows 2000 Professional SP3
• Microsoft Windows 2000 Professional SP4
• Microsoft Windows 2000 Professional
• Microsoft Windows 2000 Server SP1
• Microsoft Windows 2000 Server SP2
• Microsoft Windows 2000 Server SP3
• Microsoft Windows 2000 Server SP4
• Microsoft Windows 2000 Server
• Microsoft Windows Server 2003 Datacenter Edition
• Microsoft Windows Server 2003 Datacenter Edition Itanium
• 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 x64 Edition
• Microsoft Windows Server 2003 Standard Edition
• Microsoft Windows Server 2003 Standard x64 Edition
• Microsoft Windows Server 2003 Web Edition
• Microsoft Windows XP 64-bit Edition SP1
• Microsoft Windows XP 64-bit Edition
• Microsoft Windows XP Home SP1
• Microsoft Windows XP Home
• Microsoft Windows XP Media Center Edition SP1
• Microsoft Windows XP Media Center Edition
• Microsoft Windows XP Professional SP1
• Microsoft Windows XP Professional
• Microsoft Windows XP Professional x64 Edition
• Microsoft Windows XP Tablet PC Edition SP1
• Microsoft Windows XP Tablet PC Edition SP2
• Microsoft Windows XP Tablet PC Edition
• Nortel Networks CallPilot 3.0.0
• Nortel Networks CallPilot 4.0.0
• Nortel Networks Centrex IP Client Manager 2.5.0
• Nortel Networks Centrex IP Client Manager 7.0.0
• Nortel Networks Centrex IP Client Manager 8.0.0
• Nortel Networks Centrex IP Client Manager
• Nortel Networks Centrex IP Element Manager 2.5.0
• Nortel Networks Centrex IP Element Manager 7.0.0
• Nortel Networks Centrex IP Element Manager 8.0.0

References

• BugTraq: 15056
• CVE: CVE-2005-2119
• URL: http://www.microsoft.com/technet/security/bulletin/MS05-051.mspx
• URL: http://www.kb.cert.org/vuls/id/180868
• URL: http://www.us-cert.gov/cas/techalerts/TA05-284A.html