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CERT Advisory CA-99-16 Buffer Overflow in Sun Solstice AdminSuite Daemon

sadmind



   Original release date: December 14, 1999

   Last revised: --

   Source: CERT/CC

   

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

   

Systems Affected



     * Systems that have sadmind installed

       

I. Description



   The sadmind program is installed by default in Solaris 2.5, 2.6, and

   7. In Solaris 2.3 and 2.4, sadmind may be installed if the Sun

   Solstice Adminsuite packages are installed. The sadmind program is

   installed in /usr/sbin. It can be used to coordinate distributed

   system administration operations remotely. The sadmind daemon is

   started automatically by the inetd daemon whenever a request to

   perform a system administration operation is received.

   

   All versions of sadmind are vulnerable to a buffer overflow that can

   overwrite the stack pointer within a running sadmind process. Since

   sadmind is installed as root, it is possible to execute arbitrary

   code with root privileges on a remote machine.

   

   This vulnerability has been discussed in public security forums and is

   actively being exploited by intruders.

   

II. Impact



   A remote user may be able to execute arbitrary code with root

   privileges on systems running vulnerable versions of sadmind.

   

III. Solution



Disable sadmind



   Remove (or comment) the following line in /etc/inetd.conf:

   

   100232/10 tli rpc/udp wait root /usr/sbin/sadmind sadmind

          

   Even though it will not defend against the attack discussed in this

   advisory, it is a good practice to set the security option used to

   authenticate requests to a STRONG level, for example:

   

   100232/10 tli rpc/udp wait root /usr/sbin/sadmind sadmind -S 2

          

   If you must use sadmind to perform system administration tasks, we

   urge you to use this setting.

   

   Appendix A contains information provided by vendors for this advisory.

   We will update the appendix as we receive or develop more information.

   If you do not see your vendor's name in Appendix A, the CERT/CC did

   not hear from that vendor. Please contact your vendor directly.

   

Appendix A. Vendor Information



Sun Microsystems



   Sun Microsystems is currently working on patches to address the issue

   discussed in this advisory and recommends disabling sadmind.

     _________________________________________________________________

   

   The CERT Coordination Center thanks Sun Microsystems for its help in

   providing information for this advisory.

   ______________________________________________________________________

   

   This document is available from:

   http://www.cert.org/advisories/CA-99-16-sadmind.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 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

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Getting security information



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   Copyright 1999 Carnegie Mellon University.

   Conditions for use, disclaimers, and sponsorship information can be

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

       

   * "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

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     _________________________________________________________________

   

   Revision History

December 14, 1999:  Initial release



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