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AUSCERT External Security Bulletin Redistribution
ESB-2003.0504 -- Sun(sm) Alert Notification
Sun Alert ID: 55301 - Solaris 8 IPv6 Enabled Systems May Panic Handling
Certain Packets
23 July 2003
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AusCERT Security Bulletin Summary
---------------------------------
Product: IPv6
Publisher: Sun Microsystems
Operating System: Solaris 8
Platform: SPARC
i386
Impact: Denial of Service
Access Required: Remote
Comment: Original bulletin available at:
http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F55301
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DOCUMENT ID: 55301
SYNOPSIS: Solaris 8 IPv6 Enabled Systems May Panic Handling Certain
Packets
DETAIL DESCRIPTION:
Sun(sm) Alert Notification
* Sun Alert ID: 55301
* Synopsis: Solaris 8 IPv6 Enabled Systems May Panic Handling
Certain Packets
* Category: Security
* Product: Solaris
* BugIDs: 4457722
* Avoidance: Workaround
* State: Resolved
* Date Released: 21-Jul-2003
* Date Closed: 21-Jul-2003
* Date Modified:
1. Impact
Solaris 8 systems configured to use Internet Protocol Version 6
(ip6(7P)) may panic when processing certain IPv6 packets. A local or
remote user may be able to send IPv6 packets which would panic the
system causing a Denial of Service.
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Solaris 8 without patch 108528-21
x86 Platform
* Solaris 8 without patch 108529-21
Note: Solaris 2.6, Solaris 7 and Solaris 9 are not impacted by this
issue.
3. Symptoms
The symptom of this issue is a sytem panic.
SOLUTION SUMMARY:
4. Relief/Workaround
To work around the described issue, disable IPv6 on the system.
To determine if a system is running with IPv6 enabled, run the
following command:
$ ifconfig -a6
If entries are printed marked "UP and RUNNING" then the system is
utilizing IPv6.
To disable IPv6 on a system, run the following command as root:
# ifconfig -a6 down
Edit the "/etc/nsswitch.conf" file and change the ipnodes entry to be
"files" only. IPv6 will function again after a reboot.
Note: To disable IPv6 on systems across a system reboot, the
"/etc/hostname6.<interface>" files can be temporarily renamed.
5. Resolution
This issue is addressed in the following releases:
SPARC Platform
* Solaris 8 with patch 108528-21 or later
x86 Platform
* Solaris 8 with patch 108529-21 or later
This Sun Alert notification is being provided to you on an "AS IS"
basis. This Sun Alert notification may contain information provided by
third parties. The issues described in this Sun Alert notification may
or may not impact your system(s). Sun makes no representations,
warranties, or guarantees as to the information contained herein. ANY
AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT
YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE
OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
This Sun Alert notification contains Sun proprietary and confidential
information. It is being provided to you pursuant to the provisions of
your agreement to purchase services from Sun, or, if you do not have
such an agreement, the Sun.com Terms of Use. This Sun Alert
notification may only be used for the purposes contemplated by these
agreements.
Copyright 2000-2003 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved.
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