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Date: Mon, 09 Jul 2018 14:17:57 -0700
From: Apple Product Security <product-security-noreply@...ts.apple.com>
To: security-announce@...ts.apple.com
Subject: [FD] APPLE-SA-2018-7-9-4 macOS High Sierra 10.13.6,
 Security Update 2018-004 Sierra, Security Update 2018-004 El Capitan

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

APPLE-SA-2018-7-9-4 macOS High Sierra 10.13.6, Security Update
2018-004 Sierra, Security Update 2018-004 El Capitan

macOS High Sierra 10.13.6, Security Update 2018-004 Sierra, and
Security Update 2018-004 El Capitan are now available and address
the following:

AMD
Available for: macOS High Sierra 10.13.5
Impact: A malicious application may be able to determine kernel
memory layout
Description: An information disclosure issue was addressed by
removing the vulnerable code.
CVE-2018-4289: shrek_wzw of Qihoo 360 Nirvan Team

APFS
Available for: macOS High Sierra 10.13.5
Impact: An application may be able to execute arbitrary code with
kernel privileges
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2018-4268: Mac working with Trend Micro's Zero Day Initiative

ATS
Available for: macOS High Sierra 10.13.5
Impact: A malicious application may be able to gain root privileges
Description: A type confusion issue was addressed with improved
memory handling.
CVE-2018-4285: Mohamed Ghannam (@_simo36)

CFNetwork
Available for: macOS High Sierra 10.13.5
Impact: Cookies may unexpectedly persist in Safari
Description: A cookie management issue was addressed with improved
checks.
CVE-2018-4293: an anonymous researcher

CoreCrypto
Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6
Impact: A malicious application may be able to break out of its
sandbox
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2018-4269: Abraham Masri (@cheesecakeufo)

DesktopServices
Available for: macOS Sierra 10.12.6
Impact: A local user may be able to view sensitive user information
Description: A permissions issue existed in which execute permission
was incorrectly granted. This issue was addressed with improved
permission validation.
CVE-2018-4178: Arjen Hendrikse

IOGraphics
Available for: macOS High Sierra 10.13.5
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-2018-4283: @panicaII working with Trend Micro's Zero Day
Initiative

Kernel
Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, macOS
High Sierra 10.13.5
Impact: Systems using Intel® Core-based microprocessors may
potentially allow a local process to infer data utilizing Lazy FP
state restore from another process through a speculative execution
side channel
Description: Lazy FP state restore instead of eager save and restore
of the state upon a context switch. Lazy restored states are
potentially vulnerable to exploits where one process may infer
register values of other processes through a speculative execution
side channel that infers their value.

An information disclosure issue was addressed with FP/SIMD register
state sanitization.
CVE-2018-3665: Julian Stecklina of Amazon Germany, Thomas Prescher of
Cyberus Technology GmbH (cyberus-technology.de), Zdenek Sojka of
SYSGO AG (sysgo.com), and Colin Percival

libxpc
Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, macOS
High Sierra 10.13.5
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: macOS High Sierra 10.13.5
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: macOS High Sierra 10.13.5
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)

Additional recognition

Help Viewer
We would like to acknowledge Wojciech Reguła (@_r3ggi) of SecuRing
for their assistance.

Help Viewer
We would like to acknowledge Wojciech Reguła (@_r3ggi) of SecuRing
for their assistance.

Help Viewer
We would like to acknowledge Wojciech Reguła (@_r3ggi) of SecuRing
for their assistance.

Help Viewer
We would like to acknowledge Wojciech Reguła (@_r3ggi) of SecuRing
for their assistance.

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

Security
We would like to acknowledge Brad Dahlsten of Iowa State University
for their assistance.

Installation note:

macOS High Sierra 10.13.6, Security Update 2018-004 Sierra, and
Security Update 2018-004 El Capitan may be obtained from the
Mac App Store or Apple's Software Downloads web site:
https://support.apple.com/downloads/

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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