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SUN MICROSYSTEMS SECURITY BULLETIN: #00148

SUN MICROSYSTEMS SECURITY BULLETIN: #00148
Posted Aug 5, 1997

Patch advisory for Sun Microsystems. Please read for details.

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SUN MICROSYSTEMS SECURITY BULLETIN: #00148

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From aleph1@DFW.NET Tue Aug 5 17:34:12 1997
Date: Wed, 30 Jul 1997 13:16:20 -0500
From: Aleph One <aleph1@DFW.NET>
To: BUGTRAQ@NETSPACE.ORG
Subject: Sun Security Bulletin #00148

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

________________________________________________________________________________
Sun Microsystems, Inc. Security Bulletin

Bulletin Number: #00148
Date: July 30
Title: Vulnerability in NIS+

________________________________________________________________________________
Permission is granted for the redistribution of this Bulletin, so long as
the Bulletin is not edited and is attributed to Sun Microsystems. Portions
may also be excerpted for re-use in other security advisories so long as
proper attribution is included.

Any other use of this information without the express written consent of
Sun Microsystems is prohibited. Sun Microsystems expressly disclaims all
liability for any misuse of this information by any third party.
________________________________________________________________________________

1. Bulletins Topics

Sun announces the release of patches for Solaris 2.4 and 2.3 (SunOS 5.4
and 5.3) which relate to a vulnerability in NIS+.

Sun strongly recommends that you install the patches listed in section 4
immediately on systems running SunOS 5.4 and 5.3 which use NIS+.

2. Who is Affected

Vulnerable: SunOS versions 5.4, 5.4_x86, and 5.3 which use NIS+.

Not Vulnerable: SunOS 4.1.3_U1, 4.1.4, 5.5, 5.5_x86, 5.5.1, 5.5.1_x86,
and the upcoming version of Solaris.

3. Understanding the Vulnerability

NIS+ is a network-wide name service that runs under Solaris. It can be
selected as the name service in /etc/nsswitch.conf. If NIS+ is selected,
programs with setuid root permissions will link nss_nisplus.so.1 which
is susceptible to a buffer overflow vulnerability. This vulnerability may
allow non-privileged users to gain root privileges.

4. List of Patches

The vulnerability in NIS+ is fixed by the following patches:

OS version Patch ID
__________ ________
SunOS 5.4 102277-03
SunOS 5.4_x86 102278-03
SunOS 5.3 101736-04

5. Checksum Table

The checksum table below shows the BSD checksums (SunOS 5.x: /usr/ucb/sum),
SVR4 checksums (SunOS 5.x: /usr/bin/sum), and the MD5 digital signatures
for the above-mentioned patches that are available from:

<URL:ftp://sunsolve1.sun.com/pub/patches/patches.html>

These checksums may not apply if you obtain patches from your answer
centers.

File Name BSD SVR4 MD5
_______________ ________ _________ ________________________________
102277-03.tar.Z 10681 76 2019 152 4585727103680C70301D2F7679C9EA6D
102278-03.tar.Z 52108 76 53872 151 5040EB6980280C729051927BFB5C8130
101736-04.tar.Z 27381 77 18741 153 0AC81583908220A4D92CF5C091D6212C

________________________________________________________________________________
Sun is a member of FIRST, the Forum of Incident Response and Security Teams.
For more information about FIRST, visit the FIRST web site at
"http://www.first.org/".
________________________________________________________________________________
APPENDICES

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

<URL:ftp://sunsolve1.sun.com/pub/patches/patches.html>

Customers with Sun support contracts can also obtain patches from local
Sun answer centers and SunSITEs worldwide.

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

<URL:http://sunsolve1.sun.com/sunsolve/secbulletins>

C. 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

D. 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

list A list of current security topics

query [topic] The email is treated as an inquiry and is forwarded to
the Security Coordination Team

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.
________________________________________________________________________________



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