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Home : Advisories : Buffer Overflow Vulnerability in Calendar Manager Service Daemon, rpc.cmsd

Title: Buffer Overflow Vulnerability in Calendar Manager Service Daemon, rpc.cmsd
Released by: CERT
Date: 16th July 1999
Printable version: Click here

Hash: SHA1

CERT Advisory CA-99-08 Buffer Overflow Vulnerability in Calendar Manager

Service Daemon, rpc.cmsd

   Originally released: July 16, 1999

   Source: CERT/CC

   Revised Date: July 22, 1999

   Added link to IN-99-04 in the "Impact" section.


Systems Affected

     * Systems running the Calendar Manager Service daemon, often named



I. Description

   A buffer overflow vulnerability has been discovered in the Calendar

   Manager Service daemon, rpc.cmsd. The rpc.cmsd daemon is frequently

   distributed with the Common Desktop Environment (CDE) and Open



II. Impact

   Remote and local users can execute arbitrary code with the privileges

   of the rpc.cmsd daemon, typically root. Under some configurations

   rpc.cmsd runs with an effective userid of daemon, while retaining root



   This vulnerability is being exploited in a significant number of

   incidents reported to the CERT/CC. An exploit script was posted to

   BUGTRAQ. For more information about attacks using various RPC services

   please see CERTŪ Incident Note IN-99-04



III. Solution

   Install a patch from your vendor


   Appendix A contains information provided by vendors for this advisory.

   We will update the appendix as we receive more information. If you do

   not see your vendor's name, the CERT/CC did not hear from that vendor.

   Please contact your vendor directly.


   We will update this advisory as more information becomes available.

   Please check the CERT/CC Web site for the most current revision.


   Disable the rpc.cmsd daemon


   If you are unable to apply patches to correct this vulnerability, you

   may wish to disable the rpc.cmsd daemon. If you disable rpc.cmsd, it

   may affect your ability to manage calendars.


Appendix A: Vendor Information



   Fujitsu's UXP/V operating system is not vulnerable.


   Hewlett-Packard Company


   HP is vulnerable, patches in process.


   IBM Corporation


   AIX is not vulnerable to the rpc.cmsd remote buffer overflow.

          IBM and AIX are registered trademarks of International Business

          Machines Corporation.


   Santa Cruz Operation, Inc.


   SCO is investigating this problem. The following SCO product contains

          CDE and is potentially vulnerable:


          + SCO UnixWare 7


          The following SCO products do not contain CDE, and are

          therefore believed not to be vulnerable:


          + SCO UnixWare 2.1

          + SCO OpenServer 5

          + SCO Open Server 3.0

          + SCO CMW+


          SCO will provide further information and patches if necessary

          as soon as possible at http://www.sco.com/security.


   Silicon Graphics, Inc.


   IRIX does not have dtcm or rpc.cmsd and therefore is NOT vulnerable.


          UNICOS does not have dtcm or rpc.cmsd and therefore is NOT



   Sun Microsystems, Inc.


   The following patches are available:



    SunOS version     Patch ID

    _____________     _________

    SunOS 5.5.1       104976-04

    SunOS 5.5.1_x86   105124-03

    SunOS 5.5         103251-09

    SunOS 5.5_x86     103273-07

    SunOS 5.3         101513-14

    SunOS 4.1.4       100523-25

    SunOS 4.1.3_U1    100523-25



    CDE version       Patch ID

    ___________       ________

    1.3               107022-03

    1.3_x86           107023-03

    1.2               105566-07

    1.2_x86           105567-08

          Patches for SunOS 5.4 and CDE 1.0.2 and 1.0.1 will be available

          within a week of the release of this advisory.


          Sun security patches are available at:






   The CERT Coordination Center would like to thank Chok Poh of Sun

   Microsystems, David Brumley of Stanford University, and Elias Levy of

   Security Focus for their assistance in preparing this advisory.



   This document is available from:




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



   CERT personnel answer the hotline 08:00-20:00 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



Getting security information

   CERT publications and other security information are available from

   our web site http://www.cert.org/.


   To be added to our mailing list for advisories and bulletins, send

   email to cert-advisory-request@cert.org and include SUBSCRIBE

   your-email-address in the subject of your message.


   Copyright 1999 Carnegie Mellon University.

   Conditions for use, disclaimers, and sponsorship information can be

   found in http://www.cert.org/legal_stuff.html.


   * "CERT" and "CERT Coordination Center" are registered in the U.S.

   Patent and Trademark Office




   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.


   Revision History

   July 22, 1999  Added link to IN-99-04 in the "Impact" section

   July 20, 1999  Updated the advisory title

   July 16, 1999  Initial release


Version: PGP for Personal Privacy 5.0

Charset: noconv





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