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AUSCERT External Security Bulletin Redistribution
ESB-2009.0084 -- [Solaris]
A Solaris Kernel Security Vulnerability on Systems Using the Sun UltraSPARC
T2 and T2+ Processors May Allow Denial of Service (DoS)
29 January 2009
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AusCERT Security Bulletin Summary
---------------------------------
Product: OpenSolaris
Publisher: Sun Microsystems
Operating System: Solaris
Impact: Denial of Service
Access: Existing Account
CVE Names: CVE-2009-0277
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-250066-1
Revision History: January 29 2009: Added CVE
January 23 2009: Initial Release
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Solution Type: Sun Alert
Solution 250066 : A Solaris Kernel Security Vulnerability on
Systems Using the Sun UltraSPARC T2 and T2+ Processors May Allow
Denial of Service (DoS)
Bug ID: 6762012
Product
OpenSolaris
Date of Resolved Release: 21-Jan-2009
SA Document Body
A Solaris Kernel Security Vulnerability on Systems Using the Sun
UltraSPARC T2 and T2+ Processors May Allow Denial of Service (DoS)
1. Impact
A security vulnerability in the sun4v kernel for Sun UltraSPARC T2 and
UltraSPARC T2+ systems may allow a local unprivileged user to panic
the system, which is a type of Denial of Service (DoS).
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* OpenSolaris based upon builds snv_100 through snv_102
for Sun UltraSPARC T2 and UltraSPARC T2+ systems.
Notes:
1. Solaris 8 and 9 do not support the Sun UltraSPARC T2 or UltraSPARC
T2+ processor and thus are not impacted by this issue.
2. Solaris 10 is not impacted by this issue.
3. This issue only affects systems with a Sun UltraSPARC T2 or
UltraSPARC T2+ processor and therefore does not affect the x86
platform.
To determine if a system has either a Sun UltraSPARC T2 or UltraSPARC
T2+ processor, the following command can be run:
$ modinfo | grep SUNW,UltraSPARC-T2
If output is returned similiar to the following:
3 12c3d40 5450 - 0 SUNW,UltraSPARC-T2 ()
or:
4 121c460 6520 - 0 SUNW,UltraSPARC-T2+ ()
then the system has a Sun UltraSPARC T2 or UltraSPARC T2+ processor.
3. Symptoms
If the described issue occurs, the system may panic with a stack trace
similar to the following:
panic[cpu16]/thread=30005406e80: bad stack overflow at TL 1
hat_memload_array_region()
segvn_fault_vnodepages()
segvn_fault()
as_fault()
pagefault()
trap()
utl0()
4. Workaround
There is no workaround for this issue. Please see the Resolution
section below.
5. Resolution
This issue is addressed in the following release:
SPARC Platform
* OpenSolaris based upon builds snv_103 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 2000-2009 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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