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Sun Microsystems, Inc. Security Bulletin
Bulletin Number: #00167
Date: April 8, 1998
Cross-Ref:
Title: rpcbind
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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
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OR PUNITIVE DAMAGES HOWEVER CAUSED AND REGARDLESS OF ANY THEORY OF LIABILITY
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If any of the above provisions are held to be in violation of applicable law,
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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
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Sun acknowledges with thanks AUSCERT for their assistance in this matter.
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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)
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________________________________________________________________________________
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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