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APPLE-SA-2008-11-20 iPhone OS 2.2 and iPhone OS for iPod touch 2.2
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APPLE-SA-2008-11-20 iPhone OS 2.2 and iPhone OS for iPod touch 2.2



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APPLE-SA-2008-11-20 iPhone OS 2.2 and iPhone OS for iPod touch 2.2

iPhone OS 2.2 and iPhone OS for iPod touch 2.2 is now available and
addresses the following issues:

CoreGraphics
CVE-ID:  CVE-2008-2321
Available for:  iPhone OS 1.0 through 2.1,
iPhone OS for iPod touch 1.1 through 2.1
Impact:  Visiting a maliciously crafted website may lead to an
unexpected application termination or arbitrary code execution
Description:  CoreGraphics contains memory corruption issues in the
processing of arguments. Passing untrusted input to CoreGraphics via
an application, such as a web browser, may lead to an unexpected
application termination or arbitrary code execution. This update
addresses the issue through improved bounds checking. Credit to
Michal Zalewski of Google for reporting this issue.

ImageIO
CVE-ID:  CVE-2008-2327
Available for:  iPhone OS 1.0 through 2.1,
iPhone OS for iPod touch 1.1 through 2.1
Impact:  Viewing a maliciously crafted TIFF image may lead to an
unexpected application termination or arbitrary code execution
Description:  Multiple uninitialized memory access issues exist in
libTIFF's handling of LZW-encoded TIFF images. Viewing a maliciously
crafted TIFF image may lead to an unexpected application termination
or arbitrary code execution. This update addresses the issue through
proper memory initialization and additional validation of TIFF
images.

ImageIO
CVE-ID:  CVE-2008-1586
Available for:  iPhone OS 1.0 through 2.1,
iPhone OS for iPod touch 1.1 through 2.1
Impact:  Viewing a maliciously crafted TIFF image may lead to an
unexpected device reset
Description:  A memory exhaustion issue exists in the handling of
TIFF images. Viewing a maliciously crafted TIFF image may lead to an
unexpected device reset. This update addresses the issue by limiting
the amount of memory allocated to open a TIFF image. Credit to Sergio
'shadown' Alvarez of n.runs AG for reporting this issue.

Networking
CVE-ID:  CVE-2008-4227
Available for:  iPhone OS 1.0 through 2.1,
iPhone OS for iPod touch 1.1 through 2.1
Impact:  The encryption level for PPTP VPN connections may be lower
than expected
Description:  The encryption level for PPTP VPN connections may
revert to a previous lower setting. This update addresses the issue
by properly setting the encryption preferences. Credit to Stephen
Butler of the University of Illinois of Urbana-Champaign for
reporting this issue.

Office Viewer
CVE-ID:  CVE-2008-4211
Available for:  iPhone OS 1.0 through 2.1,
iPhone OS for iPod touch 1.1 through 2.1
Impact:  Viewing a maliciously crafted Microsoft Excel file may lead
to an unexpected application termination or arbitrary code execution
Description:  A signedness issue in Office Viewer's handling of
columns in Microsoft Excel files may result in an out-of-bounds
memory access. Viewing a maliciously crafted Microsoft Excel file may
lead to an unexpected application termination or arbitrary code
execution. This update addresses the issue by ensuring that the
affected index values are not negative. Credit: Apple.

Passcode Lock
CVE-ID:  CVE-2008-4228
Available for:  iPhone OS 1.0 through 2.1,
iPhone OS for iPod touch 1.1 through 2.1
Impact:  Emergency calls are not restricted to emergency numbers
Description:  iPhone provides the ability to make an emergency call
when locked. Currently, an emergency call may be placed to any
number. A person with physical access to an iPhone may take advantage
of this feature to place arbitrary calls which are charged to the
iPhone owner. This update addresses the issue by restricting
emergency calls to a limited set of phone numbers.

Passcode Lock
CVE-ID:  CVE-2008-4229
Available for:  iPhone OS 1.0 through 2.1,
iPhone OS for iPod touch 1.1 through 2.1
Impact:  Restoring a device from backup may not re-enable the
Passcode Lock
Description:  The Passcode Lock feature is designed to prevent
applications from being launched unless the correct passcode is
entered. A race condition in the handling of device settings may
cause the Passcode Lock to be removed when the device is restored
from backup. This may allow a person with physical access to the
device to launch applications without the passcode. This update
addresses the issue by improving the system's ability to recognize
missing preferences. This issue does not affect systems prior to
iPhone OS 2.0 or iPhone OS for iPod touch 2.0. Credit to Nolen Scaife
for reporting this issue.

Passcode Lock
CVE-ID:  CVE-2008-4230
Available for:  iPhone OS 1.0 through 2.1,
iPhone OS for iPod touch 1.1 through 2.1
Impact:  Short Message Service (SMS) messages may be revealed before
the passcode is entered
Description:  If an SMS message arrives while the emergency call
screen is visible, the entire SMS message is displayed, even if the
"Show SMS Preview" preference was set to "OFF". This update
addresses the issue by, in this situation, displaying only a
notification that a SMS message has arrived, and not its content.

Safari
CVE-ID:  CVE-2008-4231
Available for:  iPhone OS 1.0 through 2.1,
iPhone OS for iPod touch 1.1 through 2.1
Impact:  Visiting a maliciously crafted website may lead to an
unexpected application termination or arbitrary code execution
Description:  A memory corruption issue exists in the handling of
HTML table elements. Visiting a maliciously crafted website may lead
to an unexpected application termination or arbitrary code execution.
This update addresses the issue through improved handling of HTML
table elements. Credit to Haifei Li of Fortinet's FortiGuard Global
Security Research Team for reporting this issue.

Safari
CVE-ID:  CVE-2008-4232
Available for:  iPhone OS 1.0 through 2.1,
iPhone OS for iPod touch 1.1 through 2.1
Impact:  Websites with embedded iframe elements may be vulnerable to
user interface spoofing
Description:  Safari allows an iframe element to display content
outside its boundaries, which may lead to user interface spoofing.
This update addresses the issue by not allowing iframe elements to
display content outside their boundaries. This issue does not affect
systems prior to iPhone OS 2.0 or iPhone OS for iPod touch 2.0.
Credit to John Resig of Mozilla Corporation for reporting this issue.

Safari
CVE-ID:  CVE-2008-4233
Available for:  iPhone OS 1.0 through 2.1,
iPhone OS for iPod touch 1.1 through 2.1
Impact:  Visiting a maliciously crafted website may initiate a phone
call without user interaction
Description:  If an application is launched via Safari while a call
approval dialog is shown, the call will be placed. This may allow a
maliciously crafted website to initiate a phone call without user
interaction. Additionally, under certain circumstances it may be
possible for a maliciously crafted website to block the user's
ability to cancel dialing for a short period of time. This update
addresses the issue by properly dismissing Safari's call approval
dialog when an application is being launched via Safari. Credit to
Collin Mulliner of Fraunhofer SIT for reporting this issue.

Webkit
CVE-ID:  CVE-2008-3644
Available for:  iPhone OS 1.0 through 2.1,
iPhone OS for iPod touch 1.1 through 2.1
Impact:  Sensitive information may be disclosed to a person with
physical access to an unlocked device
Description:  Disabling autocomplete on a form field may not prevent
the data in the field from being stored in the browser page cache.
This may lead to the disclosure of sensitive information to a person
with physical access to an unlocked device. This update addresses the
issue by properly clearing the form data. Credit to an anonymous
researcher for reporting this issue.

Installation note:

This update is only available through iTunes, and will not appear in
your computer's Software Update application, or in the Apple
Downloads site. Make sure you have an internet connection and have
installed the latest version of iTunes from www.apple.com/itunes/

iTunes will automatically check Apple's update server on its weekly
schedule. When an update is detected, it will download it. When
the iPhone or iPod touch is docked, iTunes will present the user with
the option to install the update. We recommend applying the update
immediately if possible. Selecting "don't install" will present the
option the next time you connect your iPhone or iPod touch.

The automatic update process may take up to a week depending on the
day that iTunes checks for updates. You may manually obtain the
update via the "Check for Update" button within iTunes. After doing
this, the update can be applied when your iPhone or iPod touch is
docked to your computer.

To check that the iPhone or iPod touch has been updated:

* Navigate to Settings
* Select General
* Select About. The version after applying this update will be
"2.2 (5G77)" or later

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:
http://www.apple.com/support/security/pgp/

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