Sun Security Bulletin #00171

[aleph1 () DFW NET (Aleph One)]

---------- Forwarded message ----------
Date: Wed, 10 Jun 1998 13:34:09 -0700
From: Sun Security Coordination Team <secure () sunsc Eng Sun COM>
To: CWS () sunsc Eng Sun COM
Subject: Sun Security Bulletin #00171

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________________________________________________________________________________
                   Sun Microsystems, Inc. Security Bulletin

Bulletin Number:        #00171
Date:                   June 10, 1998
Cross-Ref:
Title:                  ftpd
________________________________________________________________________________

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
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________________________________________________________________________________

1.  Bulletins Topics

    Sun announces the release of patches for Solaris(tm) 2.6, 2.5.1, 2.5
    and 2.3 (SunOS(tm) 5.6, 5.5.1, 5.5 and 5.3), which relate to a
    vulnerability in ftpd.

    Sun estimates that the release of patches for Solaris 2.4 (SunOS 5.4)
    that relate to the same vulnerability will be available within 6 weeks
    of the date of this bulletin.

    Sun strongly recommends that you install the patches listed in section 4
    immediately on systems running SunOS 5.6, 5.6_x86, 5.5.1, 5.5, and 5.3
    which use in.ftpd.

2.  Who is Affected

    Vulnerable:  SunOS 5.6, 5.6_x86, 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.

3.  Understanding the Vulnerability

    The in.ftpd daemon is the Internet File Transfer Protocol (FTP) server
    process.  The server is invoked by the Internet daemon inetd each time
    a connection to the FTP service is made.  A vulnerability has been
    discovered which could be exploited to launch an denial of service
    attack against the ftp server.

4.  List of Patches

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

    SunOS               Patch ID
    _____               _________
    SunOS 5.6           106301-01
    SunOS 5.6_x86       106302-01
    SunOS 5.5.1         103603-08
    SunOS 5.5.1_x86     103604-08
    SunOS 5.5           103577-08
    SunOS 5.5_x86       103578-08
    SunOS 5.4           101945-59       (to be released in 6 weeks)
    SunOS 5.4_x86       101946-52       (to be released in 6 weeks)
    SunOS 5.3           104938-02

_______________________________________________________________________________
APPENDICES

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

        <URL:http://sunsolve.sun.com/sunsolve/pubpatches/patches.html>

B.  Checksums for the patches listed in this bulletin are available via
    World Wide Web at:

        <URL:http://sunsolve.sun.com/sunsolve/pubpatches/patches.html>

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

        <URL:http://sunsolve.sun.com/pub-cgi/secbul.pl>

D.  Sun Security Coordination Team's PGP key is available via World Wide Web
    at:

        <URL:http://sunsolve.sun.com/sunsolve/secbulletins/SunSCkey.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

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________________________________________________________________________________

Copyright 1998 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
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