Dcom Rpc Vulnerability Patch

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Microsoft Windows DCOM RPC Interface Buffer Overrun Vulnerability. Risk High. Date Discovered 07-16-2003. Description A buffer overrun vulnerability has been reported.

SG Ports Services and Protocols - Port 135 tcp/udp information, official and unofficial assignments, known security risks, trojans and applications use.

Exploit details: There is a buffer overrun vulnerability in the RPC service. By default the RPC service listens on port 135 and by sending a special crafted message.

Microsoft Windows DCOM RPC Interface Buffer Overrun Vulnerability

What is COM. Microsoft COM Component Object Model technology in the Microsoft Windows-family of Operating Systems enables software components to communicate.

COM: Component Object Model Technologies

W32.Blaster.Worm is a worm that propagates by exploiting the Microsoft Windows DCOM RPC Interface Buffer Overrun Vulnerability BID 8205. It has a date triggered.

Name of Exploit: W32/Blaster: CVE Number: CAN-2003-0352: CERT Number: CA-2003-20: Microsoft Security Bulletin: MS03-026: BUGTRAQ Number: 8205: Also Known As.

Risk High Date Discovered Description A buffer overrun vulnerability has been reported in Microsoft Windows that can be exploited remotely via a DCOM RPC interface that listens on TCP/UDP port 135. The issue is due to insufficient bounds checking of client DCOM object activation requests. Exploitation of this issue could result in execution of malicious instructions with Local System privileges on an affected system. This issue may be exposed on other ports that the RPC Endpoint Mapper listens on, such as TCP ports 139, 135, 445 and 593. This has not been confirmed. Under some configurations the Endpoint Mapper may receive traffic via port 80. Update 7-31-2003: Although spikes in activity have been reported during the past five days, the majority of this scanning activity appears to be isolated to a small number of hosts. Exploit development is continuing, but at this time there is no evidence that successful worms have been developed. Although the level of activity on this port has been climbing steadily since the announcement of the vulnerability a few weeks ago, organizations that have robust filtering, and frequent patch auditing should be relatively safe. Enterprise Security Manager Symantec has posted an Enterprise Security Manager™ Response Policy for this vulnerability. It is available here. Norton Internet Security / Norton Internet Security Professional Symantec has released an update for these products, via LiveUpdate, to detect this vulnerability. Users of these products should run LiveUpdate to ensure protection against this threat. Symantec Client Firewall Symantec has released an update for Symantec Client Firewall to detect attempts to exploit this vulnerability. Symantec Client Firewall users should run LiveUpdate to ensure protection against this threat. Symantec Client Security Symantec has released an update for Symantec Client Security to detect attempts to exploit this vulnerability. Symantec Client Security users should run LiveUpdate to ensure protection against this threat. Symantec Enterprise Firewall Symantec's full application inspection firewall technology protects against this Microsoft vulnerability, blocking all the above listed TCP ports by default. For Windows-based firewalls, unique initial and ongoing system hardening automatically protects the firewall itself from this RPC-based attack. For maximum security, 3rd generation full application inspection technology intelligently blocks tunneling of DCOM traffic over HTTP channels thus providing an extra layer of protection not readily available on most common network filtering firewalls. Symantec Gateway Security Symantec has released an update for Symantec Gateway Security, via LiveUpdate, to detect this vulnerability. Symantec Gateway Security users should run LiveUpdate to ensure protection against this threat. Symantec ManHunt 3.0 Symantec has released a Security Update for users of Symantec Manhunt 3.0. Click here for more information. Symantec Vulnerability Assessment Symantec Vulnerability Assessment detects and reports this vulnerability. Click here for further information. Symantec NetRecon Symantec NetRecon detects and reports this vulnerability. Refer to Symantec NetRecon SU6 for more details. 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 NT Enterprise Server 4.0 SP6a Microsoft Windows NT Enterprise Server 4.0 SP6 Microsoft Windows NT Enterprise Server 4.0 SP5 Microsoft Windows NT Enterprise Server 4.0 SP4 Microsoft Windows NT Enterprise Server 4.0 SP3 Microsoft Windows NT Enterprise Server 4.0 SP2 Microsoft Windows NT Enterprise Server 4.0 SP1 Microsoft Windows NT Enterprise Server 4.0 Microsoft Windows NT Server 4.0 SP6a Microsoft Windows NT Server 4.0 SP6 Microsoft Windows NT Server 4.0 SP5 Microsoft Windows NT Server 4.0 SP4 Microsoft Windows NT Server 4.0 SP3 Microsoft Windows NT Server 4.0 SP2 Microsoft Windows NT Server 4.0 SP1 Microsoft Windows NT Server 4.0 Microsoft Windows NT Terminal Server 4.0 SP6a Microsoft Windows NT Terminal Server 4.0 SP6 Microsoft Windows NT Terminal Server 4.0 SP5 Microsoft Windows NT Terminal Server 4.0 SP4 Microsoft Windows NT Terminal Server 4.0 SP3 Microsoft Windows NT Terminal Server 4.0 SP2 Microsoft Windows NT Terminal Server 4.0 SP1 Microsoft Windows NT Terminal Server 4.0 Microsoft Windows NT Workstation 4.0 SP6a Microsoft Windows NT Workstation 4.0 SP6 Microsoft Windows NT Workstation 4.0 SP5 Microsoft Windows NT Workstation 4.0 SP4 Microsoft Windows NT Workstation 4.0 SP3 Microsoft Windows NT Workstation 4.0 SP2 Microsoft Windows NT Workstation 4.0 SP1 Microsoft Windows NT Workstation 4.0 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 64-bit Edition SP1 Microsoft Windows XP 64-bit Edition Microsoft Windows XP Home SP1 Microsoft Windows XP Home Microsoft Windows XP Professional SP1 Microsoft Windows XP Professional Recommendations Block external access at the network boundary, unless service is required by external parties. Hosts that can send malicious traffic to TCP port 135 can exploit this issue. External access to this port should be filtered at network perimeters. Permit access for trusted or internal hosts and networks only. Implement multiple redundant layers of security. Multiple layers of network access control and intrusion detection should be deployed to limit exposure to potentially vulnerable systems and monitor network traffic for malicious or anomalous activity. Microsoft has released patches to address this issue: Microsoft Windows 2000 Advanced Server SP4: Microsoft Windows 2000 Advanced Server SP3: Microsoft Windows 2000 Advanced Server SP2: Microsoft Windows 2000 Datacenter Server SP4: Microsoft Windows 2000 Datacenter Server SP3: Microsoft Windows 2000 Datacenter Server SP2: Microsoft Windows 2000 Professional SP4: Microsoft Windows 2000 Professional SP3: Microsoft Windows 2000 Professional SP2: Microsoft Windows 2000 Server SP4: Microsoft Windows 2000 Server SP3: Microsoft Windows 2000 Server SP2: Microsoft Windows NT Enterprise Server 4.0 SP6a: Microsoft Windows NT Server 4.0 SP6a: Microsoft Windows NT Terminal Server 4.0 SP6a: Microsoft Patch Q823980i.EXE http://microsoft.com/downloads/details.aspx?FamilyId=6C0F0160-64FA-424C-A3C1-C9FAD2DC65CA&displaylang=en Microsoft Windows NT Workstation 4.0 SP6a: 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 Patch WindowsServer2003-KB823980-ia64-ENU.exe http://microsoft.com/downloads/details.aspx?FamilyId=2B566973-C3F0-4EC1-995F-017E35692BC7&displaylang=en Microsoft Windows Server 2003 Standard Edition : Microsoft Windows Server 2003 Web Edition : Microsoft Windows XP 64-bit Edition SP1: Microsoft Patch WindowsXP-KB823980-ia64-ENU.exe http://microsoft.com/downloads/details.aspx?FamilyId=1B00F5DF-4A85-488F-80E3-C347ADCC4DF1&displaylang=en Microsoft Windows XP 64-bit Edition : Microsoft Windows XP Home SP1: Microsoft Windows XP Home : Microsoft Windows XP Professional SP1: Microsoft Windows XP Professional : References Source: Microsoft Security Bulletin MS03-026 URL: http://www.microsoft.com/technet/treeview/default.asp?url=/technet/security/bulletin/MS03-026.asp Credits Discovery of this vulnerability has been credited to The Last Stage of Delirium Research Group. Copyright (c) 2003 by Symantec Corp. Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from symsecurity@symantec.com. Disclaimer The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information. Symantec, Symantec products, Symantec Security Response, and SymSecurity are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.

What is COM? Microsoft COM (Component Object Model) technology in the Microsoft Windows-family of Operating Systems enables software components to communicate. COM is used by developers to create re-usable software components, link components together to build applications, and take advantage of Windows services. COM objects can be created with a variety of programming languages. Object-oriented languages, such as C++, provide programming mechanisms that simplify the implementation of COM objects. The family of COM technologies includes COM+, Distributed COM (DCOM) and ActiveX® Controls. Microsoft provides COM interfaces for many Windows application programming interfaces such as Direct Show, Media Foundation, Packaging API, Windows Animation Manager, Windows Portable Devices, and Microsoft Active Directory (AD). COM is used in applications such as the Microsoft Office Family of products. For example COM OLE technology allows Word documents to dynamically link to data in Excel spreadsheets and COM Automation allows users to build scripts in their applications to perform repetitive tasks or control one application from another.