Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2008.0842 -- [Solaris]
Covert Channel Security Vulnerability in the Solaris Kernel
4 September 2008
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Solaris Kernel
Publisher: Sun Microsystems
Operating System: Solaris 10
Solaris 9
Solaris 8
OpenSolaris
Impact: Reduced Security
Access: Existing Account
CVE Names: CVE-2008-3875
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-240706-1
Revision History: September 4 2008: Added CVE Reference
August 29 2008: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
Solution Type: Sun Alert
Solution 240706: Covert Channel Security Vulnerability in the
Solaris Kernel
Bug ID: 6696072
Product
Solaris 8 Operating System
Solaris 9 Operating System
Solaris 10 Operating System
OpenSolaris
Date of Resolved Release: 27-Aug-2008
SA Document Body
Covert Channel Security Vulnerability in the Solaris Kernel:
1. Impact
A security vulnerability with system calls in the Solaris Kernel may
allow two unprivileged local user processes to establish a covert
communication channel bypassing system restrictions such as the
multi-level security policy found in Solaris Trusted Extensions or the
isolation policy implemented using zones(5) or chroot(2).
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Solaris 8 without patch 117350-56
* Solaris 9 without patch 122300-30
* Solaris 10 without patch 137111-05
* OpenSolaris based upon builds snv_01 through snv_89
x86 Platform
* Solaris 8 without patch 117351-56
* Solaris 9 without patch 122301-30
* Solaris 10 without patch 137112-05
* OpenSolaris based upon builds snv_01 through snv_89
Note: OpenSolaris distributions may include additional bug fixes above
and beyond the build from which it was derived.
To determine the base build of OpenSolaris, the following command can
be used:
$ uname -v
snv_94
3. Symptoms
There are no predictable symptoms that would indicate the described
issue has been exploited to establish a covert communication channel.
4. Workaround
There is no workaround for this issue. Please see the Resolution
section below.
5. Resolution
This issue is resolved in the following releases:
SPARC Platform
* Solaris 8 with patch 117350-56 or later
* Solaris 9 with patch 122300-30 or later
* Solaris 10 with patch 137111-05 or later
* OpenSolaris based upon builds snv_01 through snv_90 or later
x86 Platform
* Solaris 8 with patch 117351-56 or later
* Solaris 9 with patch 122301-30 or later
* Solaris 10 with patch 137112-05 or later
* OpenSolaris based upon builds snv_90 or later
For more information on Security Sun Alerts, see Technical
Instruction ID 213557.
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 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/render.html?cid=1980
If you believe that your computer system has been compromised or attacked in
any way, we encourage you to let us know by completing the secure National IT
Incident Reporting Form at:
http://www.auscert.org.au/render.html?it=3192
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
iQCVAwUBSL9u+yh9+71yA2DNAQIhtwP/ckh6nnomcT45dX32lM5Vyd0fqf/b87s+
WuJcxKI6SgF22SD9gOtA6ITg8gnTVYzsRaZ68SyO/uVFDouwosbIAO6aYvZy8hOG
VkTtOxlWYojhErGfNrS1T3WI12dzH6EWEpvSMY7wLEKI/JLMjDR+GkQr3y5a/+MN
l7Mq35D8fRM=
=JAdZ
-----END PGP SIGNATURE-----