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APPLE-SA-2010-12-16-1 Time Capsule and AirPort Base Station (802.11n) Firmware 7.5.2
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APPLE-SA-2010-12-16-1 Time Capsule and AirPort Base Station (802.11n) Firmware 7.5.2



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APPLE-SA-2010-12-16-1 Time Capsule and AirPort Base Station
(802.11n) Firmware 7.5.2

Time Capsule and AirPort Base Station (802.11n) Firmware 7.5.2 is
now available and addresses the following:

CVE-ID:  CVE-2008-4309
Available for:  AirPort Extreme Base Station with 802.11n,
AirPort Express Base Station with 802.11n, Time Capsule
Impact:  A remote attacker may terminate the operation of the SNMP
service
Description:  An integer overflow exists in the
netsnmp_create_subtree_cache function. By sending a maliciously
crafted SNMPv3 packet, an attacker may cause the SNMP server to
terminate, denying service to legitimate clients. By default, the
'WAN SNMP' configuration option is disabled, and the SNMP service is
accessible only to other devices on the local network. This issue is
addressed by applying the Net-SNMP patches.

CVE-ID:  CVE-2009-2189
Available for:  AirPort Extreme Base Station with 802.11n,
AirPort Express Base Station with 802.11n, Time Capsule
Impact:  Receiving a large number of IPv6 Router Advertisement (RA)
and Neighbor Discovery (ND) packets from a system on the local
network may cause the base station to restart
Description:  A resource consumption issue exists in the base
station's handling of Router Advertisement (RA) and Neighbor
Discovery (ND) packets. A system on the local network may send a
large number of RA and ND packets that could exhaust the base
station's resources, causing it to restart unexpectedly. This issue
is addressed by rate limiting incoming ICMPv6 packets. Credit to
Shoichi Sakane of the KAME project, Kanai Akira of Internet Multifeed
Co., Shirahata Shin and Rodney Van Meter of Keio University, and
Tatuya Jinmei of Internet Systems Consortium, Inc. for reporting this
issue.

CVE-ID:  CVE-2010-0039
Available for:  AirPort Extreme Base Station with 802.11n,
AirPort Express Base Station with 802.11n, Time Capsule
Impact:  An attacker may be able to query services behind an AirPort
Base Station or Time Capsule's NAT from the source IP of the router,
if any system behind the NAT has a portmapped FTP server
Description:  The AirPort Extreme Base Station and Time Capsule's
Application-Level Gateway (ALG) rewrites incoming FTP traffic,
including PORT commands, to appear as if it is the source. An
attacker with write access to an FTP server inside the NAT may issue
a malicious PORT command, causing the ALG to send attacker-supplied
data to an IP and port behind the NAT. As the data is resent from the
Base Station, it could potentially bypass any IP-based restrictions
for the service. This issue is addressed by not rewriting inbound
PORT commands via the ALG. Credit to Sabahattin Gucukoglu for
reporting this issue.

CVE-ID:  CVE-2009-1574
Available for:  AirPort Extreme Base Station with 802.11n,
AirPort Express Base Station with 802.11n, Time Capsule
Impact:  A remote attacker may be able to cause a denial of service
Description:  A null pointer dereference in racoon's handling of
fragmented ISAKMP packets may allow a remote attacker to cause an
unexpected termination of the racoon daemon. This issue is addressed
through improved validation of fragmented ISAKMP packets.

CVE-ID:  CVE-2010-1804
Available for:  AirPort Extreme Base Station with 802.11n,
AirPort Express Base Station with 802.11n, Time Capsule
Impact:  A remote attacker may cause the device to stop processing
network traffic
Description:  An implementation issue exists in the network bridge.
Sending a maliciously crafted DHCP reply to the device may cause it
to stop responding to network traffic. This issue affects devices
that have been configured to act as a bridge, or are configured in
Network Address Translation (NAT) mode with a default host enabled.
By default, the device operates in NAT mode, and no default host is
configured. This update addresses the issue through improved handling
of DHCP packets on the network bridge. Credit to Stefan R. Filipek
for reporting this issue.


Installation note for Firmware version 7.5.2

Firmware version 7.5.2 is installed into Time Capsule or AirPort Base
Station with 802.11n via AirPort Utility, provided with the device.

It is recommended that AirPort Utility 5.5.2 be installed before
upgrading to Firmware version 7.5.2.

AirPort Utility 5.5.2 may be obtained through Apple's Software
Download site: http://www.apple.com/support/downloads/


Information will also be posted to the Apple Security Updates
web site:  http://support.apple.com/kb/HT1222

This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/

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