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AUSCERT External Security Bulletin Redistribution
ESB-2021.3099.2
Apple security update for iOS 14.8 and iPadOS 14.8
21 September 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: iOS
iPadOS
Publisher: Apple
Operating System: Apple iOS
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
Reduced Security -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2021-30860 CVE-2021-30859 CVE-2021-30858
CVE-2021-30857 CVE-2021-30855 CVE-2021-30849
CVE-2021-30848 CVE-2021-30846 CVE-2021-30843
CVE-2021-30842 CVE-2021-30841 CVE-2021-30820
CVE-2013-0340
Reference: ESB-2021.3155
ESB-2021.3103
ESB-2021.3099
Original Bulletin:
https://support.apple.com/HT212807
Revision History: September 21 2021: Vendor added additional information for APPLE-SA-2021-09-13-1 iOS 14.8 and iPadOS 14.8
September 15 2021: Initial Release
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APPLE-SA-2021-09-20-6 Additional information for
APPLE-SA-2021-09-13-1 iOS 14.8 and iPadOS 14.8
iOS 14.8 and iPadOS 14.8 addresses the following issues.
Information about the security content is also available at
https://support.apple.com/HT212807.
Bluetooth
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: A logic issue was addressed with improved state
management.
CVE-2021-30820: Jianjun Dai of Qihoo 360 Alpha Lab
Entry added September 20, 2021
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. Apple is aware of a report that this issue may have
been actively exploited.
Description: An integer overflow was addressed with improved input
validation.
CVE-2021-30860: The Citizen Lab
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 dfont file may lead to
arbitrary code execution
Description: This issue was addressed with improved checks.
CVE-2021-30841: Xingwei Lin of Ant Security Light-Year Lab
CVE-2021-30843: Xingwei Lin of Ant Security Light-Year Lab
CVE-2021-30842: Xingwei Lin of Ant Security Light-Year Lab
Entry added September 20, 2021
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 race condition was addressed with improved locking.
CVE-2021-30857: Zweig of Kunlun Lab
Entry added September 20, 2021
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 type confusion issue was addressed with improved state
handling.
CVE-2021-30859: Apple
Entry added September 20, 2021
libexpat
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 a denial of service
Description: This issue was addressed by updating expat to version
2.4.1.
CVE-2013-0340: an anonymous researcher
Entry added September 20, 2021
Preferences
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 access restricted files
Description: A validation issue existed in the handling of symlinks.
This issue was addressed with improved validation of symlinks.
CVE-2021-30855: Zhipeng Huo (@R3dF09) and Yuebin Sun (@yuebinsun2020)
of Tencent Security Xuanwu Lab (xlab.tencent.com)
Entry added September 20, 2021
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. Apple is aware of a report that this issue
may have been actively exploited.
Description: A use after free issue was addressed with improved
memory management.
CVE-2021-30858: an anonymous researcher
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: A memory corruption issue was addressed with improved
memory handling.
CVE-2021-30848: Sergei Glazunov of Google Project Zero
Entry added September 20, 2021
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-2021-30849: Sergei Glazunov of Google Project Zero
Entry added September 20, 2021
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 memory corruption issue was addressed with improved
memory handling.
CVE-2021-30846: Sergei Glazunov of Google Project Zero
Entry added September 20, 2021
Additional recognition
CoreML
We would like to acknowledge hjy79425575 working with Trend Micro
Zero Day Initiative for their assistance.
Entry added September 20, 2021
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 "14.8"
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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