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Date: Mon, 09 Jul 2018 14:17:32 -0700
From: Apple Product Security <product-security-noreply@...ts.apple.com>
To: security-announce@...ts.apple.com
Subject: [FD] APPLE-SA-2018-7-9-1 iOS 11.4.1

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

APPLE-SA-2018-7-9-1 iOS 11.4.1

iOS 11.4.1 is now available and addresses the following:

CFNetwork
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Cookies may unexpectedly persist in Safari
Description: A cookie management issue was addressed with improved
checks.
CVE-2018-4293: an anonymous researcher

Emoji
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing an emoji under certain configurations may lead to
a denial of service
Description: A denial of service issue was addressed with improved
memory handling.
CVE-2018-4290: Patrick Wardle of Digita Security

Kernel
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A local user may be able to read kernel memory
Description: An out-of-bounds read issue existed that led to the
disclosure of kernel memory. This was addressed with improved input
validation.
CVE-2018-4282: Proteas of Qihoo 360 Nirvan Team

libxpc
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An application may be able to gain elevated privileges
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2018-4280: Brandon Azad

libxpc
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A malicious application may be able to read restricted memory
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2018-4248: Brandon Azad

LinkPresentation
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Visiting a malicious website may lead to address bar spoofing
Description: A spoofing issue existed in the handling of URLs. This
issue was addressed with improved input validation.
CVE-2018-4277: xisigr of Tencent's Xuanwu Lab (tencent.com)

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A malicious website may exfiltrate audio data cross-origin
Description: Sound fetched through audio elements may be exfiltrated
cross-origin. This issue was addressed with improved audio taint
tracking.
CVE-2018-4278: Jun Kokatsu (@shhnjk)

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A malicious website may be able to cause a denial of service
Description: A race condition was addressed with additional
validation.
CVE-2018-4266: found by OSS-Fuzz

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Visiting a malicious website may lead to address bar spoofing
Description: A spoofing issue existed in the handling of URLs. This
issue was addressed with improved input validation.
CVE-2018-4274: an anonymous researcher

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing maliciously crafted web content may lead to an
unexpected Safari crash
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2018-4270: found by OSS-Fuzz

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: A type confusion issue was addressed with improved
memory handling.
CVE-2018-4284: Found by OSS-Fuzz

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th 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-2018-4261: Omair working with Trend Micro's Zero Day Initiative
CVE-2018-4262: Mateusz Krzywicki working with Trend Micro's Zero Day
Initiative
CVE-2018-4263: Arayz working with Trend Micro's Zero Day Initiative
CVE-2018-4264: found by OSS-Fuzz, Yu Zhou and Jundong Xie of
Ant-financial Light-Year Security Lab
CVE-2018-4265: cc working with Trend Micro's Zero Day Initiative
CVE-2018-4267: Arayz of Pangu team working with Trend Micro's Zero
Day Initiative
CVE-2018-4272: found by OSS-Fuzz

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing maliciously crafted web content may lead to an
unexpected Safari crash
Description: Multiple memory corruption issues were addressed with
improved input validation.
CVE-2018-4271: found by OSS-Fuzz
CVE-2018-4273: found by OSS-Fuzz

WebKit Page Loading
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Visiting a malicious website may lead to address bar spoofing
Description: An inconsistent user interface issue was addressed with
improved state management.
CVE-2018-4260: xisigr of Tencent's Xuanwu Lab (tencent.com)

Wi-Fi
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A malicious application may be able to break out of its
sandbox
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2018-4275: Brandon Azad

Additional recognition

Kernel
We would like to acknowledge juwei lin (@panicaII) of Trend Micro
working with Trend Micro's Zero Day Initiative for their
assistance.

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 11.4.1".

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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