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Sun Security Bulletin #00149
From: aleph1 () DFW NET (Aleph One)
Date: Wed, 13 Aug 1997 05:08:00 -0500


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________________________________________________________________________________
                   Sun Microsystems, Inc. Security Bulletin

Bulletin Number:        #00149
Date:                   August 12, 1997
Cross-Ref:              AUSCERT 97.17
Title:                  Vulnerability in ps

________________________________________________________________________________
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 the
    ps program.

    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. Exploit
    information is publicly available.

2.  Who is Affected

    Vulnerable:  SunOS versions 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

    The vulnerability is fixed in the upcoming release of Solaris.

3.  Understanding the Vulnerability

    The ps command prints information about active processes on a system.
    Due to insufficient bounds checking on arguments supplied to ps, it is
    possible to overwrite the internal data space of the ps program. As ps is
    setuid root, this vulnerability may be exploited by users on a system to
    gain root access.

4.  List of Patches

    The vulnerability in ps is fixed by the following patches:

    OS version          Patch ID
    __________          ________
    SunOS 5.5.1         105050-01
    SunOS 5.5.1_x86     105051-01
    SunOS 5.5           105052-01
    SunOS 5.5_x86       105053-01
    SunOS 5.4           102711-02
    SunOS 5.4_x86       102712-02
    SunOS 5.3           101545-03

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
_______________   _________   __________   _______________________________
105050-01.tar.Z   40975 131   26675 261    9E75E08487BAAAC785735188F09BD1A
105051-01.tar.Z   34192 132   34975 264    612A6C200D9BA69087FCD3EBA6DF3B2
105052-01.tar.Z   37362 131   3540 261     41EE88EBC09B3E90E4FAEAA7E59E818
105053-01.tar.Z   38180 126   31988 252    D57C2E934BAEE887535CBDB6E88D723
102711-02.tar.Z   12693 107   22447 214    DE783A43205F1290E8CCBEA6A313EDF
102712-02.tar.Z   16617 103   32208 205    DA1C0188D437E30934182CC23A648FC
101545-03.tar.Z   46772 107   49688 214    12CF86B80340842421DD284DAC7FDB0
_______________________________________________________________________________
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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