Archive of CERT general posting, CERT Advisory CA-2003-16 Buffer Overflow in Microsoft RPC

17/07/03, CERT Advisory CA-2003-16 Buffer Overflow in Microsoft RPC
From: CERT Advisory <cert-advisory@cert.org>

Generated by MHonArc

CSIM Logo WelcomeCourses
Faculty, Student, Staff
Projects and reports
Conferences, workshop and seminars
Laboratories and reasearch facilities
Information related to CSIM
Information non-related to CSIM
Address, map, phone, etc.
Search

[Date Prev] [Date Next] [Thread Prev] [Thread Next] [Date Index] [Thread Index]


To: cert-advisory@cert.org
Subject: CERT Advisory CA-2003-16 Buffer Overflow in Microsoft RPC
From: CERT Advisory <cert-advisory@cert.org>
Date: Thu, 17 Jul 2003 01:14:19 -0400
List-archive: <http://www.cert.org/>
List-help: <http://www.cert.org/>, <mailto:Majordomo@cert.org?body=help>
List-owner: <mailto:cert-advisory-owner@cert.org>
List-post: NO (posting not allowed on this list)
List-subscribe: <mailto:Majordomo@cert.org?body=subscribe%20cert-advisory>
List-unsubscribe: <mailto:Majordomo@cert.org?body=unsubscribe%20cert-advisory>
Mail-from: From cert-advisory-owner@cert.org Thu Jul 17 12:56:11 2003
Organization: CERT(R) Coordination Center - +1 412-268-7090


-----BEGIN PGP SIGNED MESSAGE-----

CERT Advisory CA-2003-16 Buffer Overflow in Microsoft RPC

   Original release date: July 17, 2003
   Last revised: --
   Source: CERT/CC

   A complete revision history is at the end of this file.

Systems Affected

     * Microsoft Windows NT 4.0
     * Microsoft Windows NT 4.0 Terminal Services Edition
     * Microsoft Windows 2000
     * Microsoft Windows XP
     * Microsoft Windows Server 2003

Overview

   A buffer overflow vulnerability exists in Microsoft's Remote Procedure
   Call  (RPC)  implementation.  A  remote  attacker  could  exploit this
   vulnerability to execute arbitrary code or cause a denial of service.

I. Description

   There   is  a  buffer  overflow  in  Microsoft's  RPC  implementation.
   According  to  Microsoft  Security  Bulletin  MS03-026,  "There  is  a
   vulnerability in the part of RPC that deals with message exchange over
   TCP/IP. The failure results because of incorrect handling of malformed
   messages.   This   particular   vulnerability  affects  a  Distributed
   Component  Object  Model  (DCOM)  interface with RPC, which listens on
   TCP/IP  port  135.  This  interface  handles  DCOM  object  activation
   requests  that  are  sent by client machines (such as Universal Naming
   Convention (UNC) paths) to the server."

   The CERT/CC is tracking this issue as VU#568148. This reference number
   corresponds to CVE candidate CAN-2003-0352.

II. Impact

   A   remote  attacker  could  exploit  this  vulnerability  to  execute
   arbitrary  code  with  Local System privileges or to cause a denial of
   service.

III. Solution

Apply a patch

   Apply  the  appropriate  patch  as  specified  by  Microsoft  Security
   Bulletin MS03-026.

Restrict access

   You  may  wish to block access from outside your network perimeter,
   specifically  by blocking access to port 135/TCP. This will limit your
   exposure  to attacks. However, blocking at the network perimeter would
   still  allow attackers within the perimeter of your network to exploit
   the  vulnerability.  It  is  important  to  understand  your network's
   configuration  and  service  requirements before deciding what changes
   are appropriate.
     _________________________________________________________________

   This  vulnerability  was  discovered  by  The  Last  Stage of Delirium
   Research  Group.  Microsoft  has published Microsoft Security Bulletin
   MS03-026, upon which this document is largely based.
     _________________________________________________________________

   Author: Ian A. Finlay
   ______________________________________________________________________

   This document is available from:
   http://www.cert.org/advisories/CA-2003-16.html
   ______________________________________________________________________

CERT/CC Contact Information

   Email: cert@cert.org
          Phone: +1 412-268-7090 (24-hour hotline)
          Fax: +1 412-268-6989
          Postal address:
          CERT Coordination Center
          Software Engineering Institute
          Carnegie Mellon University
          Pittsburgh PA 15213-3890
          U.S.A.

   CERT/CC   personnel   answer  the  hotline  08:00-17:00  EST(GMT-5)  /
   EDT(GMT-4)  Monday  through  Friday;  they are on call for emergencies
   during other hours, on U.S. holidays, and on weekends.

Using encryption

   We  strongly  urge you to encrypt sensitive information sent by email.
   Our public PGP key is available from
   http://www.cert.org/CERT_PGP.key

   If  you  prefer  to  use  DES,  please  call the CERT hotline for more
   information.

Getting security information

   CERT  publications  and  other security information are available from
   our web site
   http://www.cert.org/

   To  subscribe  to  the CERT mailing list for advisories and bulletins,
   send  email  to majordomo@cert.org. Please include in the body of your
   message

   subscribe cert-advisory

   *  "CERT"  and  "CERT  Coordination Center" are registered in the U.S.
   Patent and Trademark Office.
   ______________________________________________________________________

   NO WARRANTY
   Any  material furnished by Carnegie Mellon University and the Software
   Engineering  Institute  is  furnished  on  an  "as is" basis. Carnegie
   Mellon University makes no warranties of any kind, either expressed or
   implied  as  to  any matter including, but not limited to, warranty of
   fitness  for  a  particular purpose or merchantability, exclusivity or
   results  obtained from use of the material. Carnegie Mellon University
   does  not  make  any warranty of any kind with respect to freedom from
   patent, trademark, or copyright infringement.
     _________________________________________________________________

   Conditions for use, disclaimers, and sponsorship information

   Copyright 2003 Carnegie Mellon University.

   Revision History
July 17, 2003:  Initial release

-----BEGIN PGP SIGNATURE-----
Version: PGP 6.5.8

iQCVAwUBPxYuDmjtSoHZUTs5AQFv7wP/WetxU0XdObqmC02+lOSG/aR1lGsMpB0i
9AAilcA21Dd/VO/cD8cAiAnb/pavd7NF+uXM8xDdlCTB7ypME5pKFOn6zk1sc9L9
G+9iOSqFUQbnM496CQRdz+UpDYNN4dT9/bgt239Bpyh2gxGxGIxKKN/cUCQ2kGxr
yjsZSjp9hME=
=ao29
-----END PGP SIGNATURE-----



Previous message sorted by date: CERT Advisory CA-2003-15 Cisco IOS Interface Blocked by IPv4 Packet
Next message sorted by date: New information regarding CERT Advisory CA-2003-15
Previous message sorted by thread: CERT Advisory CA-2003-15 Cisco IOS Interface Blocked by IPv4 Packet
Next message by thread: New information regarding CERT Advisory CA-2003-15
Main Index
Thread Index

CSIM home pageWMailAccount managementCSIM LibraryNetwork test toolsSearch CSIM directories
Contact us: Olivier Nicole CSIM    SET    AIT Last update: Jan 2004