ESB-2018.0501 - [Apple iOS] iOS: Denial of service - Remote with user interaction 2018-02-20

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0501
                                iOS 11.2.6
                             20 February 2018

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

Product:           iOS
Publisher:         Apple
Operating System:  Apple iOS
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-4124  

Original Bulletin: 
   https://support.apple.com/en-au/HT208534

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APPLE-SA-2018-02-19-1 iOS 11.2.6

iOS 11.2.6 is now available and addresses the following:

CoreText

Available for: iPhone 5s and later, iPad Air and later, and
iPod touch 6th generation

Impact: Processing a maliciously crafted string may lead to heap
corruption

Description: A memory corruption issue was addressed through improved
input validation.

CVE-2018-4124: an anonymous researcher

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 "11.2.6".

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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===========================================================================
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The University of Queensland
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