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Date: Wed, 21 Jul 2021 17:12:43 -0700
From: Apple Product Security via Fulldisclosure <fulldisclosure@...lists.org>
To: security-announce@...ts.apple.com
Subject: [FD] APPLE-SA-2021-07-21-1 iOS 14.7 and iPadOS 14.7

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APPLE-SA-2021-07-21-1 iOS 14.7 and iPadOS 14.7

iOS 14.7 and iPadOS 14.7 addresses the following issues.
Information about the security content is also available at
https://support.apple.com/HT212601.

iOS 14.7 released July 19, 2021; iPadOS 14.7 released July 21, 2021

ActionKit
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 shortcut may be able to bypass Internet permission
requirements
Description: An input validation issue was addressed with improved
input validation.
CVE-2021-30763: Zachary Keffaber (@QuickUpdate5)

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 local attacker may be able to cause unexpected application
termination or arbitrary code execution
Description: This issue was addressed with improved checks.
CVE-2021-30781: tr3e

AVEVideoEncoder
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
state management.
CVE-2021-30748: George Nosenko

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 audio file may lead to
arbitrary code execution
Description: A memory corruption issue was addressed with improved
state management.
CVE-2021-30775: JunDong Xie of Ant Security Light-Year Lab

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: Playing a malicious audio file may lead to an unexpected
application termination
Description: A logic issue was addressed with improved validation.
CVE-2021-30776: JunDong Xie of Ant Security Light-Year Lab

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: Opening a maliciously crafted PDF file may lead to an
unexpected application termination or arbitrary code execution
Description: A race condition was addressed with improved state
handling.
CVE-2021-30786: ryuzaki

CoreText
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 font file may lead to
arbitrary code execution
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2021-30789: Mickey Jin (@patch1t) of Trend Micro, Sunglin of
Knownsec 404 team

Crash Reporter
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 gain root privileges
Description: A logic issue was addressed with improved validation.
CVE-2021-30774: Yizhuo Wang of Group of Software Security In
Progress (G.O.S.S.I.P) at Shanghai Jiao Tong University

CVMS
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 gain root privileges
Description: An out-of-bounds write issue was addressed with improved
bounds checking.
CVE-2021-30780: Tim Michaud(@TimGMichaud) of Zoom Video
Communications

dyld
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 sandboxed process may be able to circumvent sandbox
restrictions
Description: A logic issue was addressed with improved validation.
CVE-2021-30768: Linus Henze (pinauten.de)

Find My
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 access Find My data
Description: A permissions issue was addressed with improved
validation.
CVE-2021-30804: Csaba Fitzl (@theevilbit) of Offensive Security

FontParser
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 font file may lead to
arbitrary code execution
Description: An integer overflow was addressed through improved input
validation.
CVE-2021-30760: Sunglin of Knownsec 404 team

FontParser
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 tiff file may lead to a
denial-of-service or potentially disclose memory contents
Description: This issue was addressed with improved checks.
CVE-2021-30788: tr3e working with Trend Micro Zero Day Initiative

FontParser
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 font file may lead to
arbitrary code execution
Description: A stack overflow was addressed with improved input
validation.
CVE-2021-30759: hjy79425575 working with Trend Micro Zero Day
Initiative

Identity Service
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 bypass code signing
checks
Description: An issue in code signature validation was addressed with
improved checks.
CVE-2021-30773: Linus Henze (pinauten.de)

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: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: A use after free issue was addressed with improved
memory management.
CVE-2021-30802: Matthew Denton of Google Chrome Security

ImageIO
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: This issue was addressed with improved checks.
CVE-2021-30779: Jzhu, Ye Zhang(@co0py_Cat) of Baidu Security

ImageIO
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 buffer overflow was addressed with improved bounds
checking.
CVE-2021-30785: CFF of Topsec Alpha Team, Mickey Jin (@patch1t) of
Trend Micro

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 attacker with arbitrary read and write capability
may be able to bypass Pointer Authentication
Description: A logic issue was addressed with improved state
management.
CVE-2021-30769: Linus Henze (pinauten.de)

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 attacker that has already achieved kernel code execution
may be able to bypass kernel memory mitigations
Description: A logic issue was addressed with improved validation.
CVE-2021-30770: Linus Henze (pinauten.de)

libxml2
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 remote attacker may be able to cause arbitrary code
execution
Description: This issue was addressed with improved checks.
CVE-2021-3518

Measure
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: Multiple issues in libwebp
Description: Multiple issues were addressed by updating to version
1.2.0.
CVE-2018-25010
CVE-2018-25011
CVE-2018-25014
CVE-2020-36328
CVE-2020-36329
CVE-2020-36330
CVE-2020-36331

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 image may lead to a denial
of service
Description: A logic issue was addressed with improved validation.
CVE-2021-30796: 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 image may lead to arbitrary
code execution
Description: An out-of-bounds write was addressed with improved input
validation.
CVE-2021-30792: Anonymous working with Trend Micro Zero Day
Initiative

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-2021-30791: Anonymous working with Trend Micro Zero Day
Initiative

TCC
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 bypass certain Privacy
preferences
Description: A logic issue was addressed with improved state
management.
CVE-2021-30798: Mickey Jin (@patch1t) of Trend Micro

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 type confusion issue was addressed with improved state
handling.
CVE-2021-30758: Christoph Guttandin of Media Codings

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 use after free issue was addressed with improved
memory management.
CVE-2021-30795: Sergei Glazunov of Google Project Zero

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 code
execution
Description: This issue was addressed with improved checks.
CVE-2021-30797: Ivan Fratric of Google Project Zero

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: Multiple memory corruption issues were addressed with
improved memory handling.
CVE-2021-30799: Sergei Glazunov of Google Project Zero

Wi-Fi
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: Joining a malicious Wi-Fi network may result in a denial of
service or arbitrary code execution
Description: This issue was addressed with improved checks.
CVE-2021-30800: vm_call, Nozhdar Abdulkhaleq Shukri

Additional recognition

Assets
We would like to acknowledge Cees Elzinga for their assistance.

CoreText
We would like to acknowledge Mickey Jin (@patch1t) of Trend Micro for
their assistance.

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

Sandbox
We would like to acknowledge Csaba Fitzl (@theevilbit) of Offensive
Security 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 "14.7"

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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