Microsoft Windows RPCSS DCOM buffer overflows

win-rpcss-dcom-bo (13129) The risk level is classified as HighHigh Risk

Description:

Microsoft Windows is vulnerable to two buffer overflows, caused by improper handling of Remote Procedure Call (RPC) messages for Distributed Component Object Model (DCOM) activation by the RPCSS service. By default, the RPCSS service is enabled. A remote attacker could establish a connection and send a malformed RPC message to overflow a buffer and execute arbitrary code on the system with Local System privileges.


Consequences:

Gain Access

Remedy:

For vulnerability detection:

Enable the following checks in the ISS Protection Platform:
WinRpcssDcomBo
WinMs03039Patch
win-ms03039-patch

For Virtual Patch:

Enable the following checks in the ISS Protection Platform:
MSRPC_RemoteActivate_Path_BO

Block or restrict the following in the ISS Protection Platform as appropriate to the environment:
Port 135

For Manual Protection:

Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS05-051 or MS04-029. See References.

For Microsoft Windows 2000:
Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS06-018. See References.

Note: Microsoft originally provided a patch for this vulnerability in MS3-026, but it was superseded by the patch released with MS03-039, MS04-012, and MS05-051, which were superseded by the patch released with MS06-018.

For Windows XP and Windows Server 2003:
Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS05-051. See References.

Note: Microsoft originally provided a patch for this vulnerability in MS3-026, but it was superseded by the patch released with MS03-039, MS04-012, and MS05-012, which was superseded by the patch released with MS05-051.

For Windows NT 4.0:
Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS04-029. See References.

Note: Microsoft originally provided a patch for this vulnerability in MS03-039, but it was superseded by the patch released with MS04-012, and then superseded by the patch released with MS04-029.

References:

  • BugTraq Mailing List, Wed Sep 10 2003 - 12:32:40 CDT: EEYE: Microsoft RPC Heap Corruption Vulnerability - Part II.
  • CERT Advisory CA-2003-23: Vulnerabilities in Microsoft Windows.
  • Microsoft Security Bulletin MS03-039: Buffer Overrun In RPCSS Service Could Allow Code Execution (824146).
  • Microsoft Security Bulletin MS04-012: Cumulative Update for Microsoft RPC/DCOM (828741).
  • Microsoft Security Bulletin MS04-029: Vulnerability in RPC Runtime Library Could Allow Information Disclosure and Denial of Service (873350).
  • Microsoft Security Bulletin MS05-012: Vulnerability in OLE and COM Could Allow Remote Code Execution (873333).
  • Microsoft Security Bulletin MS05-051: Vulnerabilities in MSDTC and COM+ Could Allow Remote Code Execution (902400).
  • Microsoft Security Bulletin MS06-018: Vulnerability in Microsoft Distributed Transaction Coordinator Could Allow Denial of Service (913580).
  • NSFOCUS Security Advisory SA2003-06: Microsoft Windows RPC DCOM Interface Heap Overflow Vulnerability.
  • BID-8458: Microsoft RPCSS DCERPC DCOM Object Activation Packet Length Heap Corruption Vulnerability
  • BID-8459: Microsoft RPCSS DCOM Interface Long Filename Heap Corruption Vulnerability
  • CVE-2003-0528: Heap-based buffer overflow in the Distributed Component Object Model (DCOM) interface in the RPCSS Service allows remote attackers to execute arbitrary code via a malformed RPC request with a long filename parameter, a different vulnerability than CVE-2003-0352 (Blaster/Nachi) and CVE-2003-0715.
  • CVE-2003-0715: Heap-based buffer overflow in the Distributed Component Object Model (DCOM) interface in the RPCSS Service allows remote attackers to execute arbitrary code via a malformed DCERPC DCOM object activation request packet with modified length fields, a different vulnerability than CVE-2003-0352 (Blaster/Nachi) and CVE-2003-0528.
  • US-CERT VU#254236: Microsoft Windows RPCSS Service contains heap overflow in DCOM request filename handling
  • US-CERT VU#483492: Microsoft Windows RPCSS Service contains heap overflow in DCOM activation routines

Platforms Affected:

  • Microsoft Windows 2000
  • Microsoft Windows 2003 Server
  • Microsoft Windows NT 4.0 Server
  • Microsoft Windows NT 4.0 Terminal Server
  • Microsoft Windows NT 4.0 Workstation
  • Microsoft Windows XP

Reported:

Sep 10, 2003

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