Sun Security Bulletin #00158

[aleph1 () DFW NET (Aleph One)]

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________________________________________________________________________________
                   Sun Microsystems, Inc. Security Bulletin

Bulletin Number:        #00158
Date:                   October 28, 1997
Cross-Ref:              CERT CA-97.06
Title:                  rlogin
________________________________________________________________________________
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, 2.3,
    (SunOS 5.5.1, 5.5, 5.4, 5.3), SunOS 4.1.4 and 4.1.3_U1 which relate to a
    vulnerability in rlogin.

    Sun strongly recommends that you install the patches listed in section 4
    immediately on systems running SunOS 5.5.1, 5.5, 5.4, 5.3, 4.1.4, and
    4.1.3_U1.

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, 4.1.4, 4.1.3_U1

    The vulnerability is fixed in Solaris 2.6.

3.  Understanding the Vulnerability

    The rlogin program establishes a remote login session. Due to insufficient
    bounds checking on arguments supplied to rlogin, it is possible to
    overwrite the internal data space of the rlogin program. As rlogin is
    setuid root, this vulnerability may be exploited to gain root access.

4.  List of Patches

    The vulnerability in rlogin is fixed by the following patches:

    OS version          Patch ID
    __________          ________
    SunOS 5.5.1         104650-02
    SunOS 5.5.1_x86     104651-02
    SunOS 5.5           104669-02
    SunOS 5.5_x86       104670-02
    SunOS 5.4           105254-01
    SunOS 5.4_x86       105255-01
    SunOS 5.3           105253-01
    SunOS 4.1.4         105260-01
    SunOS 4.1.3_U1      105259-01

5.  Checksum Table

    The checksum table below shows the BSD checksums (SunOS 4.1.x: /bin/sum;
    SunOS 5.x: /usr/ucb/sum), SVR4 checksums (SunOS 4.1.x: /usr/5bin/sum;
    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
_______________   _________  __________   ________________________________
104650-02.tar.Z   13535 97   28313 194    09633D56EE7957B583EA7B56868C041A
104651-02.tar.Z   63944 97   59194 194    62FC76D27F05D9088734AFB2FBA728B4
104669-02.tar.Z   50300 97   53035 194    603DBCACC7E43DB308F6191BC9FA5D69
104670-02.tar.Z   53991 97   53938 193    2AAB302E10CF860B4009E1CF873B1AE7
105254-01.tar.Z   16467 86   40933 172    6C1C5E4A63C07B69E79CFE31308703F0
105255-01.tar.Z   61095 86   58884 172    CE00AF98291E033BEE5E49C049AD6162
105253-01.tar.Z   12622 86   40936 172    382904D4F14E247D17F9E59F1424480D
105260-01.tar.Z   06896 11   12684 22     191C9F074855631D4CCCD136FA267DEE
105259-01.tar.Z   18628 11   19352 22     CCC5434C6F71AE02C5B456CE4C8BDBBE

_______________________________________________________________________________
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:

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________________________________________________________________________________



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