Category
Security
Release Phase
Resolved
Bug Id
6681520
ProductSolaris 10 Operating System
OpenSolaris
Date of Resolved Release15-Jul-2009
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 1009886.1.
This Sun Alert
notification is being provided to you on
an "AS IS"
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Copyright 2000-2009 Sun
Microsystems,
Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved.References
141020-01
141021-01
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