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AUSCERT External Security Bulletin Redistribution
ESB-2007.0231 -- [Appliance]
Firmware version 7.1 for AirPort Extreme Base Station with 802.11n*
10 April 2007
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AusCERT Security Bulletin Summary
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Product: AirPort Extreme Base Station with 802.11n
Publisher: Apple
Operating System: Network Appliance
Impact: Inappropriate Access
Access: Remote/Unauthenticated
CVE Names: CVE-2007-1338 CVE-2007-0734
Original Bulletin: http://docs.info.apple.com/article.html?artnum=305366
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APPLE-SA-2007-04-09 Firmware version 7.1 for AirPort Extreme Base
Station with 802.11n*
Please see the installation note provided at the end of this advisory
for Firmware version 7.1.
Further information on the Base Station is available via:
http://www.apple.com/airportextreme/
Firmware version 7.1 is now available for the AirPort Extreme Base
Station with 802.11n*, and addresses the following security issues:
Firmware version 7.1 for AirPort Extreme Base Station with 802.11n*
AirPort Extreme Base Station with 802.11n* Firmware
CVE-ID: CVE-2007-1338
Available for: AirPort Extreme Base Station with 802.11n*
Impact: AirPort Extreme Base Station with 802.11n* allows incoming
IPv6 connections
Description: The default configuration of an AirPort Extreme Base
Station with 802.11n* allows incoming IPv6 connections. This may
expose network services on hosts connected through an AirPort Extreme
Base Station with 802.11n* to remote attackers. This update addresses
the issue by changing the default setting to limit inbound IPv6
traffic to the local network. This issue only affects AirPort Extreme
Base Station with 802.11n*, and not other versions of the Base
Station.
The AirPort Utility is used to configure the settings of the AirPort
Extreme Base Station. After installing this update and restarting
your system, you should use the AirPort Utility to review the
configuration of your wireless network as follows:
1. Open AirPort Utility
2. Select the AirPort Extreme Base Station being configured
3. Click the "Advanced" icon
4. Click the "IPv6" tab
If "Block incoming IPv6 connections" is checked (selected), then
inbound IPv6 traffic is limited and no further action is needed.
If "Block incoming IPv6 connections" is not checked (deselected), and
unsolicited incoming IPv6 connections are not desired, then it should
be enabled as follows:
1. Check "Block incoming IPv6 connections"
2. Click the "Update" button at the bottom of the window to save the
changes
AirPort Extreme Base Station with 802.11n* Firmware
CVE-ID: CVE-2007-0734
Available for: AirPort Extreme Base Station with 802.11n*
Impact: Filenames on a password-protected AirPort Disk may be
viewable to users on the local network
Description: AirPort Disk is a feature of AirPort Extreme Base
Station with 802.11n* that allows the sharing of files from a USB
hard drive connected to a compatible base station. Sharing options,
including password protection, are available via the AirPort Disk
Utility. An issue in the AirPort Disk feature allows users on the
local network to view filenames (but not their contents) on a
password-protected disk without providing a password. This update
addresses the issue by performing additional validation on AirPort
Disk access requests. This issue only affects AirPort Extreme Base
Station with 802.11n*, and not other versions of the Base Station.
Installation Note for Firmware version 7.1:
Firmware version 7.1 is installed into AirPort Extreme Base Station
with 802.11n* by running the AirPort Utility which is provided with
the Base Station.
A recent update of AirPort Utility is available via AirPort Base
Station Update 2007-001, which may be obtained through Apple's
Software Download site: http://www.apple.com/support/downloads/
It is recommended that AirPort Base Station Update 2007-001 be
applied prior to installing Firmware version 7.1.
Information will also be posted to the Apple Security Updates web
site: http://docs.info.apple.com/article.html?artnum=61798
This message is signed with Apple's Product Security PGP key, and
details are available at: http://www.apple.com/support/security/pgp/
(*) Based on an IEEE 802.11n draft specification
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
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