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APPLE-SA-2023-09-21-3 iOS 16.7 and iPadOS 16.7

iOS 16.7 and iPadOS 16.7 addresses the following issues.
Information about the security content is also available at
https://support.apple.com/kb/HT213927.

Apple maintains a Security Updates page at
https://support.apple.com/HT201222 which lists recent
software updates with security advisories.

Additional CVE entries coming soon.

Kernel
Available for: iPhone 8 and later, iPad Pro (all models), iPad Air 3rd
generation and later, iPad 5th generation and later, and iPad mini 5th
generation and later
Impact: A local attacker may be able to elevate their privileges. Apple
is aware of a report that this issue may have been actively exploited
against versions of iOS before iOS 16.7.
Description: The issue was addressed with improved checks.
CVE-2023-41992: Bill Marczak of The Citizen Lab at The University of
Toronto's Munk School and Maddie Stone of Google's Threat Analysis Group

Security
Available for: iPhone 8 and later, iPad Pro (all models), iPad Air 3rd
generation and later, iPad 5th generation and later, and iPad mini 5th
generation and later
Impact: A malicious app may be able to bypass signature
validation. Apple is aware of a report that this issue may have been
actively exploited against versions of iOS before iOS 16.7.
Description: A certificate validation issue was addressed.
CVE-2023-41991: Bill Marczak of The Citizen Lab at The University of
Toronto's Munk School and Maddie Stone of Google's Threat Analysis Group

WebKit
Available for: iPhone 8 and later, iPad Pro (all models), iPad Air 3rd
generation and later, iPad 5th generation and later, and iPad mini 5th
generation and later
Impact: Processing web content may lead to arbitrary code
execution. Apple is aware of a report that this issue may have been
actively exploited against versions of iOS before iOS 16.7.
Description: The issue was addressed with improved checks.
WebKit Bugzilla: 261544
CVE-2023-41993: Bill Marczak of The Citizen Lab at The University of
Toronto's Munk School and Maddie Stone of Google's Threat Analysis Group

Additional recognition

Kernel
We would like to acknowledge Bill Marczak of The Citizen Lab at The
University of Toronto's Munk School and Maddie Stone of Google's Threat
Analysis Group for their assistance.

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 16.7 and iPadOS 16.7".
All information is also posted on the Apple Security Updates
web site: https://support.apple.com/en-us/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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