UPDATE ALERT iOS: CVSS (Max): 8.8

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             AUSCERT External Security Bulletin Redistribution

                              ESB-2023.0391.2
                     APPLE-SA-2023-01-23-3 iOS 12.5.7
                              24 January 2023

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           iOS
Publisher:         Apple
Operating System:  Apple iOS
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-42856  

Original Bulletin: 
   https://support.apple.com/HT213597

Comment: CVSS (Max):  8.8 CVE-2022-42856 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
         CVSS Source: NVD
         Calculator:  htts://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
         
         UPDATE: Apple is aware of a report that this issue may have been actively exploited.

Revision History:  January 24 2023: Marked as Alert
                   January 24 2023: Initial Release

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APPLE-SA-2023-01-23-3 iOS 12.5.7

iOS 12.5.7 addresses the following issues.
Information about the security content is also available at
https://support.apple.com/HT213597.

WebKit
Available for: iPhone 5s, iPhone 6, iPhone 6 Plus, iPad Air, iPad
mini 2, iPad mini 3, and iPod touch (6th 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 against versions of iOS released
before iOS 15.1.
Description: A type confusion issue was addressed with improved state
handling.
WebKit Bugzilla: 248266
CVE-2022-42856: Clément Lecigne of Google's Threat Analysis Group

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 12.5.7".
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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