Message-id: <CC3D87FD-0B28-4945-8B5C-47A6E836CE13@lists.apple.com>
Date: Fri, 01 Jun 2018 10:37:16 -0700
From: Apple Product Security <product-security-noreply@...ts.apple.com>
To: security-announce@...ts.apple.com
Subject: [FD] APPLE-SA-2018-06-01-4 iOS 11.4

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APPLE-SA-2018-06-01-4 iOS 11.4

iOS 11.4 addresses the following:

Bluetooth
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A malicious application may be able to elevate privileges
Description: A buffer overflow was addressed with improved size
validation.
CVE-2018-4215: Abraham Masri (@cheesecakeufo)

Contacts
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing a maliciously crafted vcf file may lead to a
denial of service
Description: A validation issue existed in the handling of phone
numbers. This issue was addressed with improved validation of phone
numbers.
CVE-2018-4100: Abraham Masri (@cheesecakeufo)

FontParser
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing a maliciously crafted font file may lead to
arbitrary code execution
Description: A memory corruption issue was addressed with improved
validation.
CVE-2018-4211: Proteas of Qihoo 360 Nirvan Team

iBooks
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An attacker in a privileged network position may be able to
spoof password prompts in iBooks
Description: An input validation issue was addressed with improved
input validation.
CVE-2018-4202: Jerry Decime

Kernel
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An attacker in a privileged position may be able to perform a
denial of service attack
Description: A denial of service issue was addressed with improved
validation.
CVE-2018-4249: Kevin Backhouse of Semmle Ltd.

Kernel
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An application may be able to execute arbitrary code with
kernel privileges
Description: A buffer overflow was addressed with improved bounds
checking.
CVE-2018-4241: Ian Beer of Google Project Zero
CVE-2018-4243: Ian Beer of Google Project Zero

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 logic issue was addressed with improved validation.
CVE-2018-4237: Samuel Groß (@5aelo) working with Trend Micro's Zero
Day Initiative

Magnifier
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A person with physical access to an iOS device may be able to
view the last image used in Magnifier from the lockscreen
Description: A permissions issue existed in Magnifier.  This was
addressed with additional permission checks.
CVE-2018-4239: an anonymous researcher

Mail
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An attacker may be able to exfiltrate the contents of
S/MIME-encrypted e-mail
Description: An issue existed in the handling of encrypted Mail. This
issue was addressed with improved isolation of MIME in Mail.
CVE-2018-4227: Damian Poddebniak of Münster University of Applied
Sciences, Christian Dresen of Münster University of Applied Sciences,
Jens Müller of Ruhr University Bochum, Fabian Ising of Münster
University of Applied Sciences, Sebastian Schinzel of Münster
University of Applied Sciences, Simon Friedberger of KU Leuven, Juraj
Somorovsky of Ruhr University Bochum, Jörg Schwenk of Ruhr University
Bochum

Messages
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A local user may be able to conduct impersonation attacks
Description: An injection issue was addressed with improved input
validation.
CVE-2018-4235: Anurodh Pokharel of Salesforce.com

Messages
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing a maliciously crafted message may lead to a denial
of service
Description: This issue was addressed with improved message
validation.
CVE-2018-4240: Sriram (@Sri_Hxor) of PrimeFort Pvt. Ltd
CVE-2018-4250: Metehan Yılmaz of Sesim Sarpkaya

Safari
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 denial of service issue was addressed with improved
validation.
CVE-2018-4247: François Renaud, Jesse Viviano of Verizon Enterprise
Solutions

Security
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A local user may be able to read a persistent account
identifier
Description: An authorization issue was addressed with improved state
management.
CVE-2018-4223: Abraham Masri (@cheesecakeufo)

Security
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Users may be tracked by malicious websites using client
certificates
Description: An issue existed in the handling of S-MIME
certificaties. This issue was addressed with improved validation of
S-MIME certificates.
CVE-2018-4221: Damian Poddebniak of Münster University of Applied
Sciences, Christian Dresen of Münster University of Applied Sciences,
Jens Müller of Ruhr University Bochum, Fabian Ising of Münster
University of Applied Sciences, Sebastian Schinzel of Münster
University of Applied Sciences, Simon Friedberger of KU Leuven, Juraj
Somorovsky of Ruhr University Bochum, Jörg Schwenk of Ruhr University
Bochum

Security
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A local user may be able to read a persistent device
identifier
Description: An authorization issue was addressed with improved state
management.
CVE-2018-4224: Abraham Masri (@cheesecakeufo)

Security
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A local user may be able to modify the state of the Keychain
Description: An authorization issue was addressed with improved state
management.
CVE-2018-4225: Abraham Masri (@cheesecakeufo)

Security
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A local user may be able to view sensitive user information
Description: An authorization issue was addressed with improved state
management.
CVE-2018-4226: Abraham Masri (@cheesecakeufo)

Siri
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A person with physical access to an iOS device may be able to
enable Siri from the lock screen
Description: An issue existed with Siri permissions. This was
addressed with improved permission checking.
CVE-2018-4238: Baljinder Singh, Muhammad khizer javed, Onur Can
BIKMAZ (@CanBkmaz) of Mustafa Kemal University

Siri
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: A person with physical access to an iOS device may be able to
use Siri to read notifications of content that is set not to be
displayed at the lock screen
Description: An issue existed with Siri permissions. This was
addressed with improved permission checking.
CVE-2018-4252: Hunter Byrnes, Martin Winkelmann (@Winkelmannnn)

Siri Contacts
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: An attacker with physical access to a device may be able to
see private contact information
Description: An issue existed with Siri permissions. This was
addressed with improved permission checking.
CVE-2018-4244: an anonymous researcher

UIKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Processing a maliciously crafted text file may lead to a
denial of service
Description: A validation issue existed in the handling of text. This
issue was addressed with improved validation of text.
CVE-2018-4198: Hunter Byrnes

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: An inconsistent user interface issue was addressed with
improved state management.
CVE-2018-4188: YoKo Kho (@YoKoAcc) of Mitra Integrasi Informatika, PT

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-2018-4201: an anonymous researcher
CVE-2018-4218: Natalie Silvanovich of Google Project Zero
CVE-2018-4233: Samuel Groß (@5aelo) working with Trend Micro's Zero
Day Initiative

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 buffer overflow issue was addressed with improved
memory handling.
CVE-2018-4199: Alex Plaskett, Georgi Geshev, Fabi Beterke, and Nils
of MWR Labs working with Trend Micro's Zero Day Initiative

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Visiting a maliciously crafted website may lead to cookies
being overwritten
Description: A permissions issue existed in the handling of web
browser cookies. This issue was addressed with improved restrictions.
CVE-2018-4232: an anonymous researcher, Aymeric Chaib

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 race condition was addressed with improved locking.
CVE-2018-4192: Markus Gaasedelen, Nick Burnett, and Patrick Biernat
of Ret2 Systems, Inc working with Trend Micro's Zero Day Initiative

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
input validation.
CVE-2018-4214: 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 memory corruption issue was addressed with improved
memory handling.
CVE-2018-4204: found by OSS-Fuzz, Richard Zhu (fluorescence) working
with Trend Micro's Zero Day Initiative

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-2018-4246: found by OSS-Fuzz

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation
Impact: Visiting a maliciously crafted website may leak sensitive
data
Description: Credentials were unexpectedly sent when fetching CSS
mask images. This was addressed by using a CORS-enabled fetch method.
CVE-2018-4190: Jun Kokatsu (@shhnjk)

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: An out-of-bounds read was addressed with improved input
validation.
CVE-2018-4222: Natalie Silvanovich of Google Project Zero

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".

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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