Apple Security Advisory 2021-01-26-1 - iOS 14.4 and iPadOS 14.4 address race condition and arbitrary code execution vulnerabilities.
cd260a4e3fc053f47cfdd72d2d40ec8e13f16c89e9f7e0417e19ea7128b18aa8
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
APPLE-SA-2021-01-26-1 iOS 14.4 and iPadOS 14.4
iOS 14.4 and iPadOS 14.4 addresses the following issues. Information
about the security content is also available at
https://support.apple.com/HT212146.
Kernel
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4
and later, and iPod touch (7th generation)
Impact: A malicious application may be able to elevate privileges.
Apple is aware of a report that this issue may have been actively
exploited.
Description: A race condition was addressed with improved locking.
CVE-2021-1782: an anonymous researcher
WebKit
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4
and later, and iPod touch (7th generation)
Impact: A remote attacker may be able to cause arbitrary code
execution. Apple is aware of a report that this issue may have been
actively exploited.
Description: A logic issue was addressed with improved restrictions.
CVE-2021-1871: an anonymous researcher
CVE-2021-1870: an anonymous researcher
Additional details available soon.
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 14.4 and iPadOS 14.4".
This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/
-----BEGIN PGP SIGNATURE-----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fl62
-----END PGP SIGNATURE-----