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__________________________________________________________
The U.S. Department of Energy
Computer Incident Advisory Capability
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INFORMATION BULLETIN
SunOS ftp client Vulnerability
October 5, 1998 17:00 GMT Number J-004
______________________________________________________________________________
PROBLEM: A vulnerability has been discovered in the ftp client software.
PLATFORM: SunOS versions 5.6, 5.6_x86, 5.5.1, 5.5.1_x86, 5.5, 5.5_x86,
5.4, 5.4_x86, 5.3, 4.1.4 and 4.1.3_U1
DAMAGE: If exploited, a malicious ftp server can trick the ftp client
into executing arbitrary commands.
SOLUTION: Apply patches.
______________________________________________________________________________
VULNERABILITY Risk is high. Sun recommends that you install the patches
ASSESSMENT: listed in section 4 immediately.
______________________________________________________________________________
[ Start Sun Microsystems Advisory ]
______________________________________________________________________________
Sun Microsystems, Inc. Security Bulletin
Bulletin Number: #00176
Date: September 30, 1998
Cross-Ref:
Title: ftp
______________________________________________________________________________
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
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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) 2.6, 2.5.1, 2.5,
2.3 (SunOS(tm) 5.6, 5.5.1, 5.5, 5.3), SunOS 4.1.4 and 4.1.3_U1 which
relate to a vulnerability in the ftp program.
Sun estimates that the release of patches for Solaris 2.4 (SunOS 5.4)
that relate to the same vulnerability will be available within 9 weeks
of the date of this bulletin.
Sun recommends that you install the patches listed in section 4
immediately on systems running SunOS 5.6, 5.5.1, 5.5, 5.3, 4.1.4 and
4.1.3_U1 on systems that use ftp.
2. Affected Supported Versions
SunOS versions 5.6, 5.6_x86, 5.5.1, 5.5.1_x86, 5.5, 5.5_x86,
5.4, 5.4_x86, 5.3, 4.1.4 and 4.1.3_U1
3. Understanding the Vulnerability
The ftp command is the user interface to the Internet standard File
Transfer Protocol (FTP). ftp transfers files to and from a remote
network site. A vulnerability has been discovered in ftp client
software whereby a malicious ftp server can trick the ftp client into
executing arbitrary commands.
4. List of Patches
The following patches are available in relation to the above problem.
SunOS Patch ID
_____ _________
SunOS 5.6 106522-01
SunOS 5.6_x86 106523-01
SunOS 5.5.1 103603-09
SunOS 5.5.1_x86 103604-09
SunOS 5.5 103577-09
SunOS 5.5_x86 103578-09
SunOS 5.4 101945-60 ( available in 9 weeks )
SunOS 5.4_x86 101946-53 ( available in 9 weeks )
SunOS 5.3 101653-02
SunOS 4.1.4 104477-04
SunOS 4.1.3_U1 104454-04
______________________________________________________________________________
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
Sun Microsystems, Inc. and provided that such reproduction and distribution
is performed for non-commercial purposes.
[ End Sun Microsystems Advisory ]
______________________________________________________________________________
CIAC wishes to acknowledge the contributions of Sun Microsystems for the
information contained in this bulletin.
______________________________________________________________________________
CIAC, the Computer Incident Advisory Capability, is the computer
security incident response team for the U.S. Department of Energy
(DOE) and the emergency backup response team for the National
Institutes of Health (NIH). CIAC is located at the Lawrence Livermore
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CIAC services are available to DOE, DOE contractors, and the NIH. CIAC
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E-mail: ciac@llnl.gov
For emergencies and off-hour assistance, DOE, DOE contractor sites,
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This document was prepared as an account of work sponsored by an
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