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Sun Security Bulletin #00152
From: aleph1 () DFW NET (Aleph One)
Date: Mon, 25 Aug 1997 14:19:32 -0500


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________________________________________________________________________________
                   Sun Microsystems, Inc. Security Bulletin

Bulletin Number:        #00152
Date:                   August 25, 1997
Cross-Ref:
Title:                  Vulnerability in ifconfig ioctls
________________________________________________________________________________
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 2.5.1, 2.5, 2.4, and 2.3
    (SunOS 5.5.1, 5.5, 5.4, and 5.3) which relate to a vulnerability in
    ifconfig ioctls.

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

2.  Who is Affected

    Vulnerable:  SunOS versions 5.5.1, 5.5.1_x86, 5.5, 5.5_x86,
                                5.4, 5.4_x86, 5.3

    Not vulnerable: All other supported versions of SunOS.

    The vulnerability is fixed in Solaris 2.6.

3.  Understanding the Vulnerability

    The command ifconfig assigns addresses to network interfaces and
    configures network interface parameters. The use of ifconfig to configure
    network interface parameters is restricted to superusers. This
    vulnerability, if exploited, allows non-root attackers to use ifconfig
    to configure network interface parameters for any network interface on
    a system.

4.  List of Patches

    The vulnerability in ifconfig ioctls is fixed by the following patches:

    OS version          Patch ID
    __________          ________
    SunOS 5.5.1         103640-09
    SunOS 5.5.1_x86     103641-09
    SunOS 5.5           103093-14
    SunOS 5.5_x86       103094-11
    SunOS 5.4           101945-50
    SunOS 5.4_x86       101946-44
    SunOS 5.3           101318-87

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
_______________   _________   __________   ________________________________
103640-09.tar.Z   08357 3832  24559 7663   C79A3D0E0CC610638C60BF25DB625559
103641-09.tar.Z   10615 825   9869 1649    B64D85F18E8B74E0DE251BCAA0AD10DE
103093-14.tar.Z   51571 2293  26450 4586   4EA9F527F219C836740DF51C7374F5E4
103094-11.tar.Z   03030 802   64820 1604   75AB9D22CDB03861B5CA9941752A1F57
101945-50.tar.Z   04413 10909 4073 21817   198EAAAC3D92898622351C43F87E884F
101946-44.tar.Z   10072 5540  36413 11080  92D61AD71C77F56CA1DF6038D644B4F9
101318-87.tar.Z   45783 11292 55998 22584  395AD525FD411904A3BD03E7E02EED10
_______________________________________________________________________________
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.  Sun Security Coordination Team's PGP key is available via World Wide Web
    at:

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

D.  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

E.  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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