Wednesday, October 27, 2021

Apple Security Advisory 2021-10-26-1

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APPLE-SA-2021-10-26-1 iOS 15.1 and iPadOS 15.1

iOS 15.1 and iPadOS 15.1 addresses the following issues.
Information about the security content is also available at
https://support.apple.com/HT212867.

Audio
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: A malicious application may be able to elevate privileges
Description: An integer overflow was addressed through improved input
validation.
CVE-2021-30907: Zweig of Kunlun Lab

ColorSync
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: Processing a maliciously crafted image may lead to arbitrary
code execution
Description: A memory corruption issue existed in the processing of
ICC profiles. This issue was addressed with improved input
validation.
CVE-2021-30917: Alexandru-Vlad Niculae and Mateusz Jurczyk of Google
Project Zero

Continuity Camera
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: A local attacker may be able to cause unexpected application
termination or arbitrary code execution
Description: This issue was addressed with improved checks.
CVE-2021-30903: an anonymous researcher

CoreAudio
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: Processing a maliciously crafted file may disclose user
information
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2021-30905: Mickey Jin (@patch1t) of Trend Micro

CoreGraphics
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: Processing a maliciously crafted PDF may lead to arbitrary
code execution
Description: An out-of-bounds write was addressed with improved input
validation.
CVE-2021-30919

FileProvider
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: Unpacking a maliciously crafted archive may lead to arbitrary
code execution
Description: An input validation issue was addressed with improved
memory handling.
CVE-2021-30881: Simon Huang (@HuangShaomang) and pjf of IceSword Lab
of Qihoo 360

GPU Drivers
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: A malicious application may be able to execute arbitrary code
with kernel privileges
Description: An out-of-bounds write issue was addressed with improved
bounds checking.
CVE-2021-30900: Yinyi Wu (@3ndy1) of Ant Security Light-Year Lab

GPU Drivers
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: An application may be able to execute arbitrary code with
kernel privileges
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2021-30914: Zuozhi Fan (@pattern_F_) of Ant Security TianQiong
Lab

iCloud
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: A local attacker may be able to elevate their privileges
Description: This issue was addressed with improved checks.
CVE-2021-30906: Cees Elzinga

Image Processing
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: An application may be able to execute arbitrary code with
kernel privileges
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2021-30894: Pan ZhenPeng (@Peterpan0927) of Alibaba Security
Pandora Lab

Kernel
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: An application may be able to execute arbitrary code with
kernel privileges
Description: A use after free issue was addressed with improved
memory management.
CVE-2021-30886: @0xalsr

Kernel
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th 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-2021-30909: Zweig of Kunlun Lab

Kernel
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: A malicious application may be able to execute arbitrary code
with kernel privileges
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2021-30916: Zweig of Kunlun Lab

Model I/O
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: Processing a maliciously crafted file may disclose user
information
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2021-30910: Mickey Jin (@patch1t) of Trend Micro

Model I/O
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: Processing a maliciously crafted USD file may disclose memory
contents
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2021-30911: Rui Yang and Xingwei Lin of Ant Security Light-Year
Lab

Siri
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: A local attacker may be able to view contacts from the lock
screen
Description: A lock screen issue allowed access to contacts on a
locked device. This issue was addressed with improved state
management.
CVE-2021-30875: Abhay Kailasia (@abhay_kailasia) of Lakshmi Narain
College of Technology

UIKit
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: A person with physical access to an iOS device may be able to
determine characteristics of a user's password in a secure text entry
field
Description: A logic issue was addressed with improved state
management.
CVE-2021-30915: Kostas Angelopoulos

Voice Control
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: A local attacker may be able to cause unexpected application
termination or arbitrary code execution
Description: A use after free issue was addressed with improved
memory management.
CVE-2021-30902: 08Tc3wBB of ZecOps Mobile EDR Team

WebKit
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: Processing maliciously crafted web content may lead to
unexpectedly unenforced Content Security Policy
Description: A logic issue was addressed with improved restrictions.
CVE-2021-30887: Narendra Bhati (@imnarendrabhati) of Suma Soft Pvt.
Ltd.

WebKit
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: A malicious website using Content Security Policy reports may
be able to leak information via redirect behavior
Description: An information leakage issue was addressed.
CVE-2021-30888: Prakash (@1lastBr3ath)

WebKit
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: A buffer overflow issue was addressed with improved
memory handling.
CVE-2021-30889: Chijin Zhou of ShuiMuYuLin Ltd and Tsinghua
wingtecher lab

WebKit
Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2
and later, iPad 5th generation and later, iPad mini 4 and later, and
iPod touch (7th generation)
Impact: Processing maliciously crafted web content may lead to
universal cross site scripting
Description: A logic issue was addressed with improved state
management.
CVE-2021-30890: an anonymous researcher

Additional recognition

iCloud
We would like to acknowledge Ryan Pickren (ryanpickren.com) for their
assistance.

Mail
We would like to acknowledge Fabian Ising and Damian Poddebniak of
Münster University of Applied Sciences for their assistance.

NetworkExtension
We would like to acknowledge Alex Bauer of Branch for their
assistance.

WebKit
We would like to acknowledge Ivan Fratric of Google Project Zero,
Pavel Gromadchuk, an anonymous researcher 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 "15.1"

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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