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Sun Security Bulletin #00167
From: aleph1 () DFW NET (Aleph One)
Date: Wed, 8 Apr 1998 15:24:23 -0500


---------- Forwarded message ----------
Date: Wed, 8 Apr 1998 09:51:46 -0700
From: Sun Security Coordination Team <secure () sunsc Eng Sun COM>
To: CWS () sunsc Eng Sun COM
Subject: Sun Security Bulletin #00167

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________________________________________________________________________________
                   Sun Microsystems, Inc. Security Bulletin

Bulletin Number:        #00167
Date:                   April 8, 1998
Cross-Ref:
Title:                  rpcbind
________________________________________________________________________________

The information contained in this Security Bulletin is provided "AS IS."
Sun makes no warranties of any kind whatsoever with respect to the information
contained in this Security Bulletin. ALL EXPRESS OR IMPLIED CONDITIONS,
REPRESENTATIONS AND WARRANTIES, INCLUDING ANY WARRANTY OF NON-INFRINGEMENT OR
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE
HEREBY DISCLAIMED AND EXCLUDED TO THE EXTENT ALLOWED BY APPLICABLE LAW.

IN NO EVENT WILL SUN MICROSYSTEMS, INC. BE LIABLE FOR ANY LOST REVENUE,
PROFIT OR DATA, OR FOR DIRECT, SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL
OR PUNITIVE DAMAGES HOWEVER CAUSED AND REGARDLESS OF ANY THEORY OF LIABILITY
ARISING OUT OF THE USE OF OR INABILITY TO USE THE INFORMATION CONTAINED IN
THIS SECURITY BULLETIN, EVEN IF SUN MICROSYSTEMS, INC. HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES.

If any of the above provisions are held to be in violation of applicable law,
void, or unenforceable in any jurisdiction, then such provisions are waived
to the extent necessary for this disclaimer to be otherwise enforceable in
such jurisdiction.
________________________________________________________________________________

1.  Bulletins Topics

    Sun announces the release of patches for Solaris(tm) 2.6, 2.5.1, 2.5,
    2.4, and 2.3 (SunOS(tm) 5.6, 5.5.1, 5.5, 5.4, and 5.3), which relate
    to a vulnerability in the rpcbind program.

    Sun recommends that you install the patches listed in section 4
    immediately on systems running SunOS 5.6, 5.5.1, 5.5, 5.4, and 5.3.

2.  Who is Affected

    Vulnerable:  SunOS versions 5.6, 5.6_x86, 5.5.1, 5.5.1_x86, 5.5, 5.5_x86,
                 5.4, 5.4_x86, and 5.3.

    Not vulnerable: All other supported versions of SunOS.

3.  Understanding the Vulnerability

    The rpcbind program is a server that converts RPC program numbers into
    universal addresses. When an RPC service is started, it registers itself
    with rpcbind by telling rpcbind the address at which the RPC service is
    listening, and the RPC program numbers it is prepared to serve. A
    vulnerability has been discovered in rpcbind which, if exploited, can be
    used to overwrite arbitrary files and permit unauthorized system access.

4.  List of Patches

    The following patches are available in relation to the above problem.

    OS version          Patch ID
    __________          ________
    SunOS 5.6           105216-03
    SunOS 5.6_x86       105217-03
    SunOS 5.5.1         104331-07
    SunOS 5.5.1_x86     104332-07
    SunOS 5.5           104357-05
    SunOS 5.5_x86       104358-05
    SunOS 5.4           102070-06
    SunOS 5.4_x86       102071-06
    SunOS 5.3           102034-05

_______________________________________________________________________________
Sun acknowledges with thanks AUSCERT for their assistance in this matter.
_______________________________________________________________________________
APPENDICES

A.  Patches listed in this bulletin are available to all Sun customers via
    World Wide Web at:

        <URL:http://sunsolve.sun.com/sunsolve/pubpatches/patches.html>

B.  Checksums for the patches listed in this bulletin are available via
    World Wide Web at:

        <URL:http://sunsolve.sun.com/sunsolve/pubpatches/patches.html>

C.  Sun security bulletins are available via World Wide Web at:

        <URL:http://sunsolve.sun.com/sunsolve/secbulletins>

D.  Sun Security Coordination Team's PGP key is available via World Wide Web
    at:

        <URL:http://sunsolve.sun.com/sunsolve/secbulletins/SunSCkey.txt>

E.  To report or inquire about a security problem with Sun software, contact
    one or more of the following:

        - Your local Sun answer centers
        - Your representative computer security response team, such as CERT
        - Sun Security Coordination Team. Send email to:

                security-alert () sun com

F.  To receive information or subscribe to our CWS (Customer Warning System)
    mailing list, send email to:

                security-alert () sun com

    with a subject line (not body) containing one of the following commands:

        Command         Information Returned/Action Taken
        _______         _________________________________

        help            An explanation of how to get information

        key             Sun Security Coordination Team's PGP key

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        query [topic]   The email is treated as an inquiry and is forwarded to
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        report [topic]  The email is treated as a security report and is
                        forwarded to the Security Coordinaton Team. Please
                        encrypt sensitive mail using Sun Security Coordination
                        Team's PGP key

        send topic      A short status summary or bulletin. For example, to
                        retrieve a Security Bulletin #00138, supply the
                        following in the subject line (not body):

                                send #138

        subscribe       Sender is added to our mailing list.  To subscribe,
                        supply the following in the subject line (not body):

                                subscribe cws your-email-address

                        Note that your-email-address should be substituted
                        by your email address.

        unsubscribe     Sender is removed from the CWS mailing list.
________________________________________________________________________________

Copyright 1998 Sun Microsystems, Inc. All rights reserved. Sun,
Sun Microsystems, Solaris and SunOS are trademarks or registered trademarks
of Sun Microsystems, Inc. in the United States and other countries. This
Security Bulletin may be reproduced and distributed, provided that this
Security Bulletin is not modified in any way and is attributed to
Sun Microsystems, Inc. and provided that such reproduction and distribution
is performed for non-commercial purposes.



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