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                                    CERT-Renater

                         Note d'Information No. 2007/VULN475
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DATE                      : 03/12/2007

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Solaris 10 running Linux branded zone.

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http://sunsolve.sun.com/search/document.do?assetkey=1-26-103153-1
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Sun(sm) Alert Notification

     * Sun Alert ID: 103153
     * Synopsis: Users in lx(5) Branded Zones May be Able to Panic
       Solaris 10 x86 Systems
     * Category: Security
     *
       Product: Solaris 10 Operating System
     * BugIDs: 6590340
     * Avoidance: Patch
     * State: Resolved
     * Date Released: 30-Nov-2007
     * Date Closed: 30-Nov-2007
     * Date Modified:

1. Impact

An unprivileged local user within a Linux branded zone (see lx(5)) may
be able to panic Solaris 10 x86 systems running in 64bit mode. Being
able to panic a system is a type of Denial of Service (DoS).


2. Contributing Factors

The issue can occur in the following releases:

x86 Platform

     * Solaris 10 with patch 120012-01 and without patch 127112-04

Note 1: This issue only occurs on systems with Linux branded zones (see
lx(5)) installed. Solaris 8 and Solaris 9 do not provide support for
Linux branded zones and are not impacted by this issue.

Note 2: This issue only affects systems running in 64-bit mode.

To determine if an lx(5) branded zone is installed on a Solaris system,
the following command can be run:

     $ zoneadm list -ip |cut -d: -f6 | grep lx || echo "No lx brand 
zones
       on system"

To determine if a system is running in 64-bit mode, the following
command can be run:

     $ isainfo -b
     64


3. Symptoms

There are no predictable symptoms that would indicate the described
issue has been exploited, other than the system panic itself



4. Relief/Workaround

There is no workaround for this issue. Please see the Resolution section
below.


5. Resolution

This issue is resolved in the following release:

x86 Platform

     * Solaris 10 with patch 127112-04 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 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved.

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