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===========================================================================
             AUSCERT External Security Bulletin Redistribution

               ESB-2001.260 -- Sun Security Bulletin #00204
                                   BIND
                               27 June 2001

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:                BIND
Vendor:                 Sun Microsystems
Operating System:       Solaris
Platform:               Sparc
                        i386
Impact:                 Denial of Service
                        Execute Arbitrary Code/Commands
                        Access Privileged Data
Access Required:        Remote

Ref:                    AA-2001.01
                        ESB-2001.037

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________________________________________________________________________________
                    Sun Microsystems, Inc. Security Bulletin

Bulletin Number:          #00204
Date:                     June 26, 2001
Cross-Ref:                CERT Advisory CA-2001-02
Title:                    BIND
________________________________________________________________________________

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) 8, 7, 2.6,
    2.5.1, 2.5, and 2.4 (SunOS(tm) 5.8, 5.7, 5.6, 5.5.1, 5.5, and
    5.4) which relate to several vulnerabilities reported in CERT
    CA-2001-02.

    Sun recommends that you install the patches listed in section 4
    immediately on systems running SunOS 5.8, 5.7, 5.6, 5.5.1, 5.5,
    and 5.4 with Sun's implementation of BIND.

2.  Who is Affected

    Vulnerable:                Systems running Sun's implementation of BIND
                               (in.named) on SunOS 5.8, 5.8_x86, 5.7,
                               5.7_x86, 5.6, 5.6_x86, 5.5.1, 5.5.1_x86,
                               5.5, 5.5_x86, 5.4, and 5.4_x86

3.  Understanding the Vulnerability

    The Berkeley Internet Name Domain (BIND) is an implementation of the
    Domain Name System (DNS) protocols.

    CERT Advisory CA-2001-02 describes four vulnerabilities in certain
    versions of BIND.  The four vulnerabilities are listed below along with
    the affected versions of Solaris and the version of BIND shipped with
    each version of Solaris.

    VU#196945 - ISC BIND 8 contains buffer overflow in transaction
    signature (TSIG) handling code

        Solaris 8 04/01* (BIND 8.2.2-p5)
        Solaris 8 Maintenance Update 4* (BIND 8.2.2-p5)

    VU#572183 - ISC BIND 4 contains buffer overflow in nslookupComplain()

        Solaris 2.6 (BIND 4.9.4-P1)
        Solaris 2.5.1** (BIND 4.9.3)

    VU#868916 - ISC BIND 4 contains input validation error in
                nslookupComplain()

        Solaris 2.6 (BIND 4.9.4-P1)
        Solaris 2.5.1** (BIND 4.9.3)

    VU#325431 - Queries to ISC BIND servers may disclose environment variables

        Solaris 2.4, 2.5 (BIND 4.8.3)
        Solaris 2.5.1** (BIND 4.9.3 and BIND 4.8.3)
        Solaris 2.6 (BIND 4.9.4-P1)
        Solaris 7 and 8 (BIND 8.1.2)

*  To determine if one is running Solaris 8 04/01 or Solaris 8 Maintenance
   Update 4, check the contents of the /etc/release file.

** Solaris 2.5.1 ships with BIND 4.8.3 but patch 103663-01 for SPARC and
   103664-01 for x86 upgrades BIND to 4.9.3, current revision for each
   patch is -17.

    CERT Advisory CA-2001-02 is available at:

    http://www.cert.org/advisories/CA-2001-02.html

4.  List of Patches

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

    OS Version               Patch ID
    __________               _________
    SunOS 5.8                109326-04
    SunOS 5.8_x86            109327-04
    SunOS 5.7                107018-03
    SunOS 5.7_x86            107019-03
    SunOS 5.6                105755-10
    SunOS 5.6_x86            105756-10
    SunOS 5.5.1              103663-16
    SunOS 5.5.1_x86          103664-16
    SunOS 5.5                103667-12
    SunOS 5.5_x86            103668-12
    SunOS 5.4                102479-14
    SunOS 5.4_x86            102480-12
_______________________________________________________________________________

APPENDICES

A.  Patches listed in this bulletin are available to all Sun customers at:

    http://sunsolve.sun.com/securitypatch

B.  Checksums for the patches listed in this bulletin are available at:

    ftp://sunsolve.sun.com/pub/patches/CHECKSUMS

C.  Sun security bulletins are available at:

    http://sunsolve.sun.com/security

D.  Sun Security Coordination Team's PGP key is available at:

    http://sunsolve.sun.com/pgpkey.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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        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
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        report [topic]  The email is treated as a security report and is
                        forwarded to the Security Coordination Team. Please
                        encrypt sensitive mail using Sun Security Coordination
                        Team's PGP key

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                        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 2000 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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