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APPLE-SA-2017-12-13-6 Additional information for
APPLE-SA-2017-12-6-2 iOS 11.2

iOS 11.2 addresses the following:

IOKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An application may be able to execute arbitrary code with
system privileges
Description: Multiple memory corruption issues were addressed through
improved state management.
CVE-2017-13847: Ian Beer of Google Project Zero

IOMobileFrameBuffer
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An application may be able to execute arbitrary code with
kernel privilege
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2017-13879: Apple

IOSurface
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An application may be able to execute arbitrary code with
kernel privileges
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2017-13861: Ian Beer of Google Project Zero

Kernel
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An application may be able to execute arbitrary code with
kernel privileges
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2017-13862: Apple
CVE-2017-13876: Ian Beer of Google Project Zero
CVE-2017-13867: Ian Beer of Google Project Zero

Kernel
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An application may be able to read restricted memory
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2017-13833: Brandon Azad

Kernel
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An application may be able to read restricted memory
Description: A type confusion issue was addressed with improved
memory handling.
CVE-2017-13855: Jann Horn of Google Project Zero

Kernel
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An application may be able to read restricted memory
Description: A validation issue was addressed with improved input
sanitization.
CVE-2017-13865: Ian Beer of Google Project Zero
CVE-2017-13868: Brandon Azad
CVE-2017-13869: Jann Horn of Google Project Zero

Mail
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Incorrect certificate is used for encryption
Description: A S/MIME issue existed in the handling of encrypted
email. This issue was addressed through improved selection of the
encryption certificate.
CVE-2017-13874: an anonymous researcher

Mail Drafts
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An attacker with a privileged network position may be able to
intercept mail
Description: An encryption issue existed with S/MIME credetials. The
issue was addressed with additional checks and user control.
CVE-2017-13860: Michael Weishaar of INNEO Solutions GmbH

Mail Message Framework
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Visiting a malicious website may lead to address bar spoofing
Description: An inconsistent user interface issue was addressed with
improved state management.
CVE-2017-2433: an anonymous researcher, an anonymous researcher, an
anonymous researcher

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: Multiple memory corruption issues were addressed with
improved memory handling.
CVE-2017-7156: an anonymous researcher
CVE-2017-7157: an anonymous researcher
CVE-2017-13856: Jeonghoon Shin
CVE-2017-13870: an anonymous researcher
CVE-2017-13866: an anonymous researcher
Entry added December 13, 2017

Wi-Fi
Available for: iPhone 6s, iPhone 6s Plus, iPhone 6, iPhone 6 Plus,
iPhone SE, iPhone 5s, 12.9-inch iPad Pro 1st generation, iPad Air 2,
iPad Air, iPad 5th generation, iPad mini 4, iPad mini 3, iPad mini 2,
and iPod touch 6th generation
Released for iPhone 7 and later and iPad Pro 9.7-inch (early 2016)
and later in iOS 11.1.
Impact: An attacker in Wi-Fi range may force nonce reuse in WPA
multicast/GTK clients (Key Reinstallation Attacks - KRACK)
Description: A logic issue existed in the handling of state
transitions. This was addressed with improved state management.
CVE-2017-13080: Mathy Vanhoef of the imec-DistriNet group at KU
Leuven

Installation note:

This update is available through iTunes and Software Update on your
iOS device, 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 https://www.apple.com/itunes/

iTunes and Software Update on the device will automatically check
Apple's update server on its weekly schedule. When an update is
detected, it is downloaded and the option to be installed is
presented to the user when the iOS device is docked. We recommend
applying the update immediately if possible. Selecting Don't Install
will present the option the next time you connect your iOS device.

The automatic update process may take up to a week depending on the
day that iTunes or the device checks for updates. You may manually
obtain the update via the Check for Updates button within iTunes, or
the Software Update on your device.

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

* Navigate to Settings
* Select General
* Select About. The version after applying this update
will be "11.2".

Information will also be posted to the Apple Security Updates
web site: https://support.apple.com/kb/HT201222

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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