Uočeno je nekoliko sigurnosnih ranjivosti vezanih uz Apple TV, uređaja za reprodukciju IPTV digitalnih sadržaja. Propusti se odnose na neodgovarajuću obradu FreeType fontova, preljev spremnika prilikom obrade TIFF slikovnih datoteka te nepravilnosti u implementaciji IPv6 protokola. Uspješnom zloupotrebom napadač može pokrenuti proizvoljan programski kod podmetanjem posebno obrađene TIFF datoteke ili pokrenuti DoS (eng. Denial of Service) napad. Korisnicima se savjetuje korištenje dostupne nadogradnje.

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APPLE-SA-2011-03-09-3 Apple TV 4.2

Apple TV 4.2 is now available and addresses the following:

Apple TV
Available for:  Apple TV 4.0 and 4.1
Impact:  Multiple vulnerabilities in FreeType
Description:  Multiple vulnerabilities existed in FreeType, the most
serious of which may lead to arbitrary code execution when processing
a maliciously crafted font. These issues are addressed by updating
FreeType to version 2.4.3. Further information is available via the
FreeType site at http://www.freetype.org/
CVE-ID
CVE-2010-3855

Apple TV
Available for:  Apple TV 4.0 and 4.1
Impact:  Viewing a maliciously crafted TIFF image may result in an
unexpected application termination or arbitrary code execution
Description:  A buffer overflow existed in libTIFF's handling of JPEG
encoded TIFF images. Viewing a maliciously crafted TIFF image may
result in an unexpected application termination or arbitrary code
execution.
CVE-ID
CVE-2011-0191 : Apple

Apple TV
Available for:  Apple TV 4.0 and 4.1
Impact:  Viewing a maliciously crafted TIFF image may result in an
unexpected application termination or arbitrary code execution
Description:  A buffer overflow existed in libTIFF's handling of
CCITT Group 4 encoded TIFF images. Viewing a maliciously crafted TIFF
image may result in an unexpected application termination or
arbitrary code execution.
CVE-ID
CVE-2011-0192 : Apple

Apple TV
Available for:  Apple TV 4.0 and 4.1
Impact:  A server may be able to identify a device across connections
Description:  The IPv6 address chosen by the device contains the
device's MAC address when using stateless address autoconfiguration
(SLAAC). An IPv6 enabled server contacted by the device can use the
address to track the device across connections. This update
implements the IPv6 extension described in RFC 3041 by adding a
temporary random address used for outgoing connections.

Apple TV
Available for:  Apple TV 4.0 and 4.1
Impact:  When connected to Wi-Fi, an attacker on the same network may
be able to cause a device reset
Description:  A bounds checking issue existed in the handling of Wi-
Fi frames. When connected to Wi-Fi, an attacker on the same network
may be able to cause a device reset.
CVE-ID
CVE-2011-0162 : Scott Boyd of ePlus Technology, inc.


Installation note:

Apple TV will periodically check for software updates. Alternatively,
you may manually check for software updates by selecting
"Settings -> General -> Update Software".

To check the current version of software, select
"Settings -> General -> About".

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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