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Apple Security Advisory 2017-09-25-4

Apple Security Advisory 2017-09-25-4
Posted Sep 28, 2017
Authored by Apple | Site apple.com

Apple Security Advisory 2017-09-25-4 - iOS 11 addresses denial of service, service impersonation, and various other vulnerabilities.

tags | advisory, denial of service, vulnerability
systems | cisco, apple, ios
advisories | CVE-2016-9063, CVE-2016-9840, CVE-2016-9841, CVE-2016-9842, CVE-2016-9843, CVE-2017-0381, CVE-2017-1000373, CVE-2017-10989, CVE-2017-11103, CVE-2017-11120, CVE-2017-11121, CVE-2017-7072, CVE-2017-7078, CVE-2017-7080, CVE-2017-7081, CVE-2017-7083, CVE-2017-7085, CVE-2017-7086, CVE-2017-7087, CVE-2017-7088, CVE-2017-7089, CVE-2017-7090, CVE-2017-7091, CVE-2017-7092, CVE-2017-7093, CVE-2017-7094, CVE-2017-7095, CVE-2017-7096
MD5 | 7de43f34b082d4813011558c39658d04

Apple Security Advisory 2017-09-25-4

Change Mirror Download
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Hash: SHA512

APPLE-SA-2017-09-25-4
Additional information for APPLE-SA-2017-09-19-1 iOS 11

iOS 11 addresses the following:

Bluetooth
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: An application may be able to access restricted files
Description: A privacy issue existed in the handling of Contact
cards. This was addressed with improved state management.
CVE-2017-7131: Dominik Conrads of Federal Office for Information
Security, an anonymous researcher, Elvis (@elvisimprsntr), an
anonymous researcher
Entry added September 25, 2017

CFNetwork Proxies
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
cause a denial of service
Description: Multiple denial of service issues were addressed through
improved memory handling.
CVE-2017-7083: Abhinav Bansal of Zscaler Inc.
Entry added September 25, 2017

CoreAudio
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: An application may be able to read restricted memory
Description: An out-of-bounds read was addressed by updating to Opus
version 1.1.4.
CVE-2017-0381: V.E.O (@VYSEa) of Mobile Threat Research Team, Trend
Micro
Entry added September 25, 2017

Exchange ActiveSync
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
erase a device during Exchange account setup
Description: A validation issue existed in AutoDiscover V1. This was
addressed by requiring TLS for AutoDiscover V1. AutoDiscover V2 is
now supported.
CVE-2017-7088: Ilya Nesterov, Maxim Goncharov

Heimdal
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
impersonate a service
Description: A validation issue existed in the handling of the KDC-
REP service name. This issue was addressed through improved
validation.
CVE-2017-11103: Jeffrey Altman, Viktor Duchovni, and Nico Williams
Entry added September 25, 2017

iBooks
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: Parsing a maliciously crafted iBooks file may lead to a
persistent denial-of-service
Description: Multiple denial of service issues were addressed through
improved memory handling.
CVE-2017-7072: JAdrzej Krysztofiak
Entry added September 25, 2017

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 memory corruption issue was addressed with improved
memory handling.
CVE-2017-7114: Alex Plaskett of MWR InfoSecurity
Entry added September 25, 2017

Keyboard Suggestions
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: Keyboard autocorrect suggestions may reveal sensitive
information
Description: The iOS keyboard was inadvertently caching sensitive
information. This issue was addressed with improved heuristics.
CVE-2017-7140: an anonymous researcher
Entry added September 25, 2017

libc
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: A remote attacker may be able to cause a denial-of-service
Description: A resource exhaustion issue in glob() was addressed
through an improved algorithm.
CVE-2017-7086: Russ Cox of Google
Entry added September 25, 2017

libc
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: An application may be able to cause a denial of service
Description: A memory consumption issue was addressed through
improved memory handling.
CVE-2017-1000373
Entry added September 25, 2017

libexpat
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: Multiple issues in expat
Description: Multiple issues were addressed by updating to version
2.2.1
CVE-2016-9063
CVE-2017-9233
Entry added September 25, 2017

Location Framework
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: An application may be able to read sensitive location
information
Description: A permissions issue existed in the handling of the
location variable. This was addressed with additional ownership
checks.
CVE-2017-7148: an anonymous researcher, an anonymous researcher
Entry added September 25, 2017

Mail Drafts
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: An attacker with a privileged network position may be able to
intercept mail contents
Description: An encryption issue existed in the handling of mail
drafts. This issue was addressed with improved handling of mail
drafts meant to be sent encrypted.
CVE-2017-7078: an anonymous researcher, an anonymous researcher, an
anonymous researcher
Entry added September 25, 2017

Mail MessageUI
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: Processing a maliciously crafted image may lead to a denial
of service
Description: A memory corruption issue was addressed with improved
validation.
CVE-2017-7097: Xinshu Dong and Jun Hao Tan of Anquan Capital

Messages
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: Processing a maliciously crafted image may lead to a denial
of service
Description: A denial of service issue was addressed through improved
validation.
CVE-2017-7118: Kiki Jiang and Jason Tokoph

MobileBackup
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: Backup may perform an unencrypted backup despite a
requirement to perform only encrypted backups
Description: A permissions issue existed. This issue was addressed
with improved permission validation.
CVE-2017-7133: Don Sparks of HackediOS.com

Phone
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: A screenshot of secure content may be taken when locking an
iOS device
Description: A timing issue existed in the handling of locking. This
issue was addressed by disabling screenshots while locking.
CVE-2017-7139: an anonymous researcher
Entry added September 25, 2017

Safari
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-2017-7085: xisigr of Tencent's Xuanwu Lab (tencent.com)

Security
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: A revoked certificate may be trusted
Description: A certificate validation issue existed in the handling
of revocation data. This issue was addressed through improved
validation.
CVE-2017-7080: an anonymous researcher, an anonymous researcher,
Sven Driemecker of adesso mobile solutions gmbh,
Rune Darrud (@theflyingcorpse) of BA|rum kommune
Entry added September 25, 2017

Security
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: A malicious app may be able to track users between installs
Description: A permission checking issue existed in the handling of
an app's Keychain data. This issue was addressed with improved
permission checking.
CVE-2017-7146: an anonymous researcher
Entry added September 25, 2017

SQLite
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: Multiple issues in SQLite
Description: Multiple issues were addressed by updating to
version 3.19.3.
CVE-2017-10989: found by OSS-Fuzz
CVE-2017-7128: found by OSS-Fuzz
CVE-2017-7129: found by OSS-Fuzz
CVE-2017-7130: found by OSS-Fuzz
Entry added September 25, 2017

SQLite
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
system privileges
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2017-7127: an anonymous researcher
Entry added September 25, 2017

Time
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: "Setting Time Zone" may incorrectly indicate that it is using
location
Description: A permissions issue existed in the process that handles
time zone information. The issue was resolved by modifying
permissions.
CVE-2017-7145: an anonymous researcher
Entry added September 25, 2017

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 through improved
input validation.
CVE-2017-7081: Apple
Entry added September 25, 2017

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-2017-7087: Apple
CVE-2017-7091: Wei Yuan of Baidu Security Lab working with Trend
Microas Zero Day Initiative
CVE-2017-7092: Samuel Gro and Niklas Baumstark working with Trend
Micro's Zero Day Initiative, Qixun Zhao (@S0rryMybad) of Qihoo 360
Vulcan Team
CVE-2017-7093: Samuel Gro and Niklas Baumstark working with Trend
Microas Zero Day Initiative
CVE-2017-7094: Tim Michaud (@TimGMichaud) of Leviathan Security Group
CVE-2017-7095: Wang Junjie, Wei Lei, and Liu Yang of Nanyang
Technological University working with Trend Microas Zero Day
Initiative
CVE-2017-7096: Wei Yuan of Baidu Security Lab
CVE-2017-7098: Felipe Freitas of Instituto TecnolA3gico de AeronA!utica
CVE-2017-7099: Apple
CVE-2017-7100: Masato Kinugawa and Mario Heiderich of Cure53
CVE-2017-7102: Wang Junjie, Wei Lei, and Liu Yang of Nanyang
Technological University
CVE-2017-7104: likemeng of Baidu Secutity Lab
CVE-2017-7107: Wang Junjie, Wei Lei, and Liu Yang of Nanyang
Technological University
CVE-2017-7111: likemeng of Baidu Security Lab (xlab.baidu.com)
working with Trend Micro's Zero Day Initiative
CVE-2017-7117: lokihardt of Google Project Zero
CVE-2017-7120: chenqin (ee|) of Ant-financial Light-Year Security
Lab
Entry added September 25, 2017

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
universal cross site scripting
Description: A logic issue existed in the handling of the parent-tab.
This issue was addressed with improved state management.
CVE-2017-7089: Anton Lopanitsyn of ONSEC, Frans RosA(c)n of Detectify
Entry added September 25, 2017

WebKit
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: Cookies belonging to one origin may be sent to another origin
Description: A permissions issue existed in the handling of web
browser cookies. This issue was addressed by no longer returning
cookies for custom URL schemes.
CVE-2017-7090: Apple
Entry added September 25, 2017

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-2017-7106: Oliver Paukstadt of Thinking Objects GmbH (to.com)

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 a
cross site scripting attack
Description: Application Cache policy may be unexpectedly applied.
CVE-2017-7109: avlidienbrunn
Entry added September 25, 2017

WebKit
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: A malicious website may be able to track users in Safari
private browsing mode
Description: A permissions issue existed in the handling of web
browser cookies. This issue was addressed with improved restrictions.
CVE-2017-7144: an anonymous researcher
Entry added September 25, 2017

Wi-Fi
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: An attacker within range may be able to execute arbitrary
code on the Wi-Fi chip
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2017-11120: Gal Beniamini of Google Project Zero
CVE-2017-11121: Gal Beniamini of Google Project Zero
Entry added September 25, 2017

Wi-Fi
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: Malicious code executing on the Wi-Fi chip may be able to
execute arbitrary code with kernel privileges on the application
processor
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2017-7103: Gal Beniamini of Google Project Zero
CVE-2017-7105: Gal Beniamini of Google Project Zero
CVE-2017-7108: Gal Beniamini of Google Project Zero
CVE-2017-7110: Gal Beniamini of Google Project Zero
CVE-2017-7112: Gal Beniamini of Google Project Zero

Wi-Fi
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: Malicious code executing on the Wi-Fi chip may be able to
execute arbitrary code with kernel privileges on the application
processor
Description: Multiple race conditions were addressed through improved
validation.
CVE-2017-7115: Gal Beniamini of Google Project Zero

Wi-Fi
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: Malicious code executing on the Wi-Fi chip may be able to
read restricted kernel memory
Description: A validation issue was addressed with improved input
sanitization.
CVE-2017-7116: Gal Beniamini of Google Project Zero

zlib
Available for: iPhone 5s and later, iPad Air and later,
and iPod touch 6th generation
Impact: Multiple issues in zlib
Description: Multiple issues were addressed by updating to version
1.2.11.
CVE-2016-9840
CVE-2016-9841
CVE-2016-9842
CVE-2016-9843
Entry added September 25, 2017

Additional recognition

Security
We would like to acknowledge Abhinav Bansal of Zscaler, Inc.
for their assistance.

Webkit
We would like to acknowledge xisigr of Tencent's Xuanwu Lab
(tencent.com) 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 "11".

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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