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Sun Security Bulletin #00171
From: aleph1 () DFW NET (Aleph One)
Date: Wed, 10 Jun 1998 18:59:36 -0500
---------- 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
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
THIS SECURITY BULLETIN, EVEN IF SUN MICROSYSTEMS, INC. HAS BEEN ADVISED OF
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
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
A. Patches listed in this bulletin are available to all Sun customers via
World Wide Web at:
B. Checksums for the patches listed in this bulletin are available via
World Wide Web at:
C. Sun security bulletins are available via World Wide Web at:
D. Sun Security Coordination Team's PGP key is available via World Wide Web
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.
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- Sun Security Bulletin #00171 Aleph One (Jun 10)