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APPLE-SA-2018-10-30-1 iOS 12.1

iOS 12.1 is now available and addresses the following:

AppleAVD
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing malicious video via FaceTime may lead to
arbitrary code execution
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2018-4384: Natalie Silvanovich of Google Project Zero

Contacts
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing a maliciously crafted vcf file may lead to a
denial of service
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2018-4365: an anonymous researcher

CoreCrypto
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An attacker may be able to exploit a weakness in the
Miller-Rabin primality test to incorrectly identify prime numbers
Description: An issue existed in the method for determining prime
numbers. This issue was addressed by using pseudorandom bases for
testing of primes.
CVE-2018-4398: Martin Albrecht, Jake Massimo and Kenny Paterson of
Royal Holloway, University of London, and Juraj Somorovsky of Ruhr
University, Bochum

FaceTime
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A remote attacker may be able to leak memory
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2018-4366: Natalie Silvanovich of Google Project Zero

FaceTime
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A remote attacker may be able to initiate a FaceTime call
causing arbitrary code execution
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2018-4367: Natalie Silvanovich of Google Project Zero

Graphics Driver
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A remote attacker may be able to initiate a FaceTime call
causing arbitrary code execution
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2018-4384: Natalie Silvanovich of Google Project Zero

ICU
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing a maliciously crafted string may lead to heap
corruption
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2018-4394: an anonymous researcher

IOHIDFamily
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-2018-4427: Pangu Team

IPSec
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An application may be able to gain elevated privileges
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2018-4371: Tim Michaud (@TimGMichaud) of Leviathan Security Group

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 by removing the
vulnerable code.
CVE-2018-4420: Mohamed Ghannam (@_simo36)

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 memory initialization issue was addressed with
improved memory handling.
CVE-2018-4413: Juwei Lin (@panicaII) of TrendMicro Mobile Security
Team

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-2018-4419: Mohamed Ghannam (@_simo36)

Messages
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing a maliciously crafted text message may lead to UI
spoofing
Description: An inconsistent user interface issue was addressed with
improved state management.
CVE-2018-4390: Rayyan Bijoora (@Bijoora) of The City School, PAF
Chapter
CVE-2018-4391: Rayyan Bijoora (@Bijoora) of The City School, PAF
Chapter

NetworkExtension
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Connecting to a VPN server may leak DNS queries to a DNS
proxy
Description: A logic issue was addressed with improved state
management.
CVE-2018-4369: an anonymous researcher

Notes
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A local attacker may be able to share items from the lock
screen
Description: A lock screen issue allowed access to the share function
on a locked device. This issue was addressed by restricting options
offered on a locked device.
CVE-2018-4388: videosdebarraquito

Safari Reader
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Enabling the Safari Reader feature on a maliciously crafted
webpage may lead to universal cross site scripting
Description: A logic issue was addressed with improved validation.
CVE-2018-4374: Ryan Pickren (ryanpickren.com)

Safari Reader
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Enabling the Safari Reader feature on a maliciously crafted
webpage may lead to universal cross site scripting
Description: A cross-site scripting issue existed in Safari. This
issue was addressed with improved URL validation.
CVE-2018-4377: Ryan Pickren (ryanpickren.com)

Security
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing a maliciously crafted S/MIME signed message may
lead to a denial of service
Description: A validation issue was addressed with improved logic.
CVE-2018-4400: Yukinobu Nagayasu of LAC Co., Ltd.

VoiceOver
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A local attacker may be able to view photos from the lock
screen
Description: A lock screen issue allowed access to photos via Reply
With Message on a locked device. This issue was addressed with
improved state management.
CVE-2018-4387: videosdebarraquito

WebKit
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: A logic issue was addressed with improved state
management.
CVE-2018-4385: 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-2018-4372: HyungSeok Han, DongHyeon Oh, and Sang Kil Cha of KAIST
Softsec Lab, Korea
CVE-2018-4373: ngg, alippai, DirtYiCE, KT of Tresorit working with
Trend Micro's Zero Day Initiative
CVE-2018-4375: Yu Haiwan and Wu Hongjun From Nanyang Technological
University working with Trend Micro's Zero Day Initiative
CVE-2018-4376: 010 working with Trend Micro's Zero Day Initiative
CVE-2018-4382: lokihardt of Google Project Zero
CVE-2018-4386: lokihardt of Google Project Zero
CVE-2018-4392: zhunki of 360 ESG Codesafe Team
CVE-2018-4416: lokihardt of Google Project Zero

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A malicious website may be able to cause a denial of service
Description: A resource exhaustion issue was addressed with improved
input validation.
CVE-2018-4409: Sabri Haddouche (@pwnsdx) of Wire Swiss GmbH

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 code
execution
Description: A memory corruption issue was addressed with improved
validation.
CVE-2018-4378: an anonymous researcher, zhunki of 360 ESG Codesafe
Team

WiFi
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An attacker in a privileged position may be able to perform a
denial of service attack
Description: A denial of service issue was addressed with improved
validation.
CVE-2018-4368: Milan Stute and Alex Mariotto of Secure Mobile
Networking Lab at Technische UniversitA$?t Darmstadt

Additional recognition

Certificate Signing
We would like to acknowledge YiAit Can YILMAZ (@yilmazcanyigit) for
their assistance.

CommonCrypto
We would like to acknowledge an anonymous researcher for their
assistance.

iBooks
We would like to acknowledge Sem VoigtlA$?nder of Fontys Hogeschool
ICT for their assistance.

Security
We would like to acknowledge Marinos Bernitsas of Parachute for their
assistance.

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 "iOS 12.1".

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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