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AUSCERT External Security Bulletin Redistribution
ESB-2009.1601
Security Vulnerability in the Solaris IP Kernel Module May
Allow Remote Users to Panic the System
7 December 2009
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AusCERT Security Bulletin Summary
---------------------------------
Product: IP Kernel Module
Publisher: Sun Microsystems
Operating System: OpenSolaris
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-268189-1
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Security Vulnerability in the Solaris IP(7p) Kernel Module May Allow
Remote Users to Panic the System, Resulting in a Denial of Service
(DoS)
_________________________________________________________________
Category : Security
Release Phase : Resolved
Bug Id : 6877954
Product : OpenSolaris
Date of Resolved Release : 04-Dec-2009
Security Vulnerability in the Solaris IP(7p) Kernel Module May Allow Remote
Users to Panic the System, Resulting in a Denial of Service (DoS)
1. Impact
A race condition security vulnerability in Solaris IP(7p) Kernel
Module may allow a local or remote unprivileged user to panic the
system, resulting in a Denial of Service (DoS).
2. Contributing Factors
SPARC Platform
* OpenSolaris based upon builds snv_106 through snv_124
x86 Platform
* OpenSolaris based upon builds snv_106 through snv_124
Note: Solaris 8, Solaris 9 and Solaris 10 are not affected by this
issue.
3. Symptoms
If the described issue occurs, the system may panic with a stack trace
similar to the following:
tcp_do_getsockname()
tcp_getsockname()
so_getsockname()
Or:
tcp_do_getpeername()
tcp_getpeername()
so_getpeername()
4. Workaround
To work around the described issue, edit the "/etc/sock2path" file as
the 'root' user and modify the following section:
From:
# Family Type Protocol Path|Module
2 2 0 tcp
2 2 6 tcp
26 2 0 tcp
26 2 6 tcp
To:
# Family Type Protocol Path|Module
2 2 0 /dev/tcp
2 2 6 /dev/tcp
26 2 0 /dev/tcp6
26 2 6 /dev/tcp6
Note: iscsitgtd(1M) and ssh(1) are the Solaris services known to be
affected by this issue and they should restarted by running the
following commands as the root user after the "/etc/sock2path" file is
edited:
# svcadm restart svc:/system/iscsitgt:default
# svcadm restart svc:/network/ssh:default
Other third party network services may be affected by this issue and
they should be restarted for the workaround to be effective.
5. Resolution
SPARC Platform
* OpenSolaris based on builds snv_125 or later
x86 Platform
* OpenSolaris based on builds snv_125 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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