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AUSCERT External Security Bulletin Redistribution
ESB-2006.0581 -- [Solaris]
On Solaris 10 a System Panic may Result due to a Race Condition Between
netstat(1M) (or snmp queries) and ifconfig(1M)
1 February 2007
AusCERT Security Bulletin Summary
Product: netstat and ifconfig
Publisher: Sun Microsystems
Operating System: Solaris 10
Impact: Denial of Service
Access: Existing Account
Revision History: February 1 2007: Patches now available
November 20 2006: Preliminary patch available.
August 14 2006: Initial Release
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Sun(sm) Alert Notification
* Sun Alert ID: 102569
* Synopsis: On Solaris 10 a System Panic Due to a Race Condition May
OccurWhen SNMP Queries are Processed (such as when netstat(1M) or
ifconfig(1M) are run)
* Category: Security, Availability
* Product: Solaris 10 Operating System
* BugIDs: 6450585
* Avoidance: Patch
* State: Resolved
* Date Released: 11-Aug-2006, 11-Jan-2007, 30-Jan-2007
* Date Closed: 30-Jan-2007
* Date Modified: 14-Nov-2006, 11-Jan-2007, 30-Jan-2007
A local or remote unprivileged user may be able to trigger a race
condition in the kernel and panic a system with certain SNMP requests.
A local unprivileged user may be able to trigger the same race
condition and panic a local system using certain invocations of
ifconfig(1M) or netstat(1M).
2. Contributing Factors
This issue can occur in the following releases:
* Solaris 10 with patch 118833-04 through 118833-32 and without
* Solaris 10 with patch 118855-03 through 118855-32 and without
Note: Solaris 8 and 9 are not impacted by this issue.
A panic string and stack backtrace similar to the following:
udp_snmp_get+0x100(3012541a658, 0, ...
snmpcom_req+0x33c(3012541a658, 300c12929c0, ...
ip_snmpmod_wput+0xe4(3012541a658, 300c12929c0, ...
putnext+0x218(3012541a750, 3012541a658, ...
snmpcom_req+0x368(3012ef12668, 300c12929c0, ...
icmp_wput_other+0x10c(3012ef12668, 300c12929c0, ...
qdrain_syncq+0x74(3012ef126d0, 3012ef12668, ...
drain_syncq+0x2e8(300fc1e01a0, 30124f34520, ...
outer_exit+0x8c(300bd9f7ef0, 300fc1e01a0, ...
qattach+0x144(3016d0a8d50, 2a1063bf758, ...
strioctl+0x1aa4(300fc1f5ca8, 0, ...
spec_ioctl+0x8c(2c00000315, 5302, ...
fop_ioctl+0x20(3032dccfd80, 5302, ...
ioctl+0x184(3, 3016fd2c290, 2073c, ...
syscall_trap32+0xcc(3, 5302, ...
There is no workaround. Please see Resolution section below.
This issue is addressed in the following releases:
* Solaris 10 with patch 118833-33 or later
* Solaris 10 with patch 118855-33 or later
* Updated Relief/Workaround section
* Modified Synopsis, Impact and Relief/Workaround sections
* State: Resolved
* Updated Contributing Factors and Resolution sections
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
notification may only be used for the purposes contemplated by these
Copyright 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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