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AUSCERT External Security Bulletin Redistribution
ESB-2009.1071.2
A Security Vulnerability in the Solaris IP Filter (ipf(5))
May Lead to a Denial of Service (DoS) Condition
21 July 2009
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AusCERT Security Bulletin Summary
---------------------------------
Product: ipfilter
Publisher: Sun Microsystems
Operating System: Solaris
OpenSolaris
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch
CVE Names: CVE-2009-2487
Original Bulletin:
http://sunsolve.sun.com/search/document.do?assetkey=1-66-260951-1
Revision History: July 21 2009: Added CVE reference
July 17 2009: Initial Release
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Solution Type Sun Alert
Solution 260951 : A Security Vulnerability in the Solaris IP Filter
(ipf(5)) May Lead to a Denial of Service (DoS) Condition
Bug ID : 6681520
Product : Solaris 10 Operating System
OpenSolaris
Date of Resolved Release : 15-Jul-2009
SA Document Body
A Security Vulnerability in the Solaris IP Filter (ipf(5)) May Lead to a
Denial of Service (DoS) Condition
1. Impact
A security vulnerability in the Solaris IP Filter (ipfilter(5)) may allow a
local or remote unprivileged user to panic the system. This is a type of
Denial of Service (DoS).
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform:
* Solaris 10 with patch 125014-02 or later or with patch 120011-14 and
without patch 141020-01
* OpenSolaris based upon builds snv_45 through snv_110
x86 Platform:
* Solaris 10 with patch 125015-02 or later or with patch 120012-14 and
without patch 141021-01
* OpenSolaris based upon builds snv_45 through snv_110
Notes:
1. Solaris 8 and 9 do not bundle ipfilter(5) and are not impacted by this
issue.
2. Only OpenSolaris installations including the following binary are
impacted by this issue:
/usr/kernel/drv/ipf
/usr/kernel/drv/amd64/ipf
3. OpenSolaris distributions may include additional bug fixes above and
beyond the build from which it was derived. The base build can be derived
as follows:
$ uname -v
snv_101
4. A system is only vulnerable to this issue, if it uses IP Filter
(ipfilter(5)). To determine if a system is using IP Filter, the following
command can be run:
# svcs -xv ipfilter
svc:/network/ipfilter:default (IP Filter)
State: disabled since Fri Jun 05 10:26:13 2009
Reason: Disabled by an administrator.
See: http://sun.com/msg/SMF-8000-05
See: man -M /usr/share/man -s 5 ipfilter
See: /var/svc/log/network-ipfilter:default.log
Impact: This service is not running.
The above output indicates that ipfilter(5) is not running and the system
is not vulnerable to this issue.
3. Symptoms
If the described issue occurs, the system may panic with a stack trace
similar to the following:
ipf:frpr_icmp+0x150()
ipf:frpr_ipv4hdr+0x174()
ipf:fr_makefrip+0x5c()
ipf:fr_check+0x1d8()
ipf:ipf_hook+0xb4()
ipf:ipf_hook_out()
<...>
4. Workaround
To work around this issue, disable ipfilter by using the following command:
# svcadm disable ipfilter
Note: Disabling the ipfilter(5) will deactivate all packet filtering rules
configured on the system using ipf(1M).
5. Resolution
This issue is addressed in the following releases:
SPARC Platform:
* Solaris 10 with patch 141020-01 or later
* OpenSolaris based upon builds snv_111 or later
x86 Platform:
* Solaris 10 with patch 141021-01 or later
* OpenSolaris based upon builds snv_111 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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