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APPLE-SA-2019-7-22-1 iOS 12.4

iOS 12.4 is now available and addresses the following:

Core Data
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: A remote attacker may be able to leak memory
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2019-8646: Natalie Silvanovich of Google Project Zero

Core Data
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: A remote attacker may be able to cause arbitrary code
execution
Description: A use after free issue was addressed with improved
memory management.
CVE-2019-8647: Samuel Groß and Natalie Silvanovich of Google Project
Zero

Core Data
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: A remote attacker may be able to cause unexpected application
termination or arbitrary code execution
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2019-8660: Samuel Groß and Natalie Silvanovich of Google Project
Zero

FaceTime
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: A remote attacker may be able to cause arbitrary code
execution
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2019-8648: Tao Huang and Tielei Wang of Team Pangu

Found in Apps
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: A remote attacker may be able to leak memory
Description: This issue was addressed with improved checks.
CVE-2019-8663: Natalie Silvanovich of Google Project Zero

Foundation
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: A remote attacker may be able to cause unexpected application
termination or arbitrary code execution
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2019-8641: Samuel Groß and Natalie Silvanovich of Google Project
Zero

Heimdal
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: An issue existed in Samba that may allow attackers to perform
unauthorized actions by intercepting communications between services
Description: This issue was addressed with improved checks to prevent
unauthorized actions.
CVE-2018-16860: Isaac Boukris and Andrew Bartlett of the Samba Team
and Catalyst

libxslt
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: A remote attacker may be able to view sensitive information
Description: A stack overflow was addressed with improved input
validation.
CVE-2019-13118: found by OSS-Fuzz

Messages
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: A remote attacker may cause an unexpected application
termination
Description: A denial of service issue was addressed with improved
validation.
CVE-2019-8665: Michael Hernandez of XYZ Marketing

Profiles
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: A malicious application may be able to restrict access to
websites
Description: A validation issue existed in the entitlement
verification. This issue was addressed with improved validation of
the process entitlement.
CVE-2019-8698: Luke Deshotels, Jordan Beichler, and William Enck of
North Carolina State University; Costin Carabaș and Răzvan
Deaconescu of University POLITEHNICA of Bucharest

Quick Look
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: An attacker may be able to trigger a use-after-free in an
application deserializing an untrusted NSDictionary
Description: This issue was addressed with improved checks.
CVE-2019-8662: Natalie Silvanovich and Samuel Groß of Google Project
Zero

Siri
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: A remote attacker may be able to leak memory
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2019-8646: Natalie Silvanovich of Google Project Zero

Telephony
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: The initiator of a phone call may be able to cause the
recipient to answer a simultaneous Walkie-Talkie connection
Description: A logic issue existed in the answering of phone calls.
The issue was addressed with improved state management.
CVE-2019-8699: Marius Alexandru Boeru (@mboeru) and an anonymous
researcher

UIFoundation
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: Parsing a maliciously crafted office document may lead to an
unexpected application termination or arbitrary code execution
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2019-8657: riusksk of VulWar Corp working with Trend Micro's Zero
Day Initiative

Wallet
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: A user may inadvertently complete an in-app purchase while on
the lock screen
Description: The issue was addressed with improved UI handling.
CVE-2019-8682: Jeff Braswell (JeffBraswell.com)

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: Processing maliciously crafted web content may lead to
universal cross site scripting
Description: A logic issue existed in the handling of document loads.
This issue was addressed with improved state management.
CVE-2019-8690: Sergei Glazunov of Google Project Zero

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: Processing maliciously crafted web content may lead to
universal cross site scripting
Description: A logic issue existed in the handling of synchronous
page loads. This issue was addressed with improved state management.
CVE-2019-8649: Sergei Glazunov of Google Project Zero

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: Processing maliciously crafted web content may lead to
universal cross site scripting
Description: A logic issue was addressed with improved state
management.
CVE-2019-8658: akayn working with Trend Micro's Zero Day Initiative

WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod
touch 6th generation and later
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: Multiple memory corruption issues were addressed with
improved memory handling.
CVE-2019-8644: G. Geshev working with Trend Micro's Zero Day
Initiative
CVE-2019-8666: Zongming Wang (王宗明) and Zhe Jin (金哲) from
Chengdu Security Response Center of Qihoo 360 Technology Co. Ltd.
CVE-2019-8669: akayn working with Trend Micro's Zero Day Initiative
CVE-2019-8671: Samuel Groß of Google Project Zero
CVE-2019-8672: Samuel Groß of Google Project Zero
CVE-2019-8673: Soyeon Park and Wen Xu of SSLab at Georgia Tech
CVE-2019-8676: Soyeon Park and Wen Xu of SSLab at Georgia Tech
CVE-2019-8677: Jihui Lu of Tencent KeenLab
CVE-2019-8678: an anonymous researcher, Anthony Lai (@darkfloyd1014)
of Knownsec, Ken Wong (@wwkenwong) of VXRL, Jeonghoon Shin
(@singi21a) of Theori, Johnny Yu (@straight_blast) of VX Browser
Exploitation Group, Chris Chan (@dr4g0nfl4me) of VX Browser
Exploitation Group, Phil Mok (@shadyhamsters) of VX Browser
Exploitation Group, Alan Ho (@alan_h0) of Knownsec, Byron Wai of VX
Browser Exploitation
CVE-2019-8679: Jihui Lu of Tencent KeenLab
CVE-2019-8680: Jihui Lu of Tencent KeenLab
CVE-2019-8681: G. Geshev working with Trend Micro Zero Day Initiative
CVE-2019-8683: lokihardt of Google Project Zero
CVE-2019-8684: lokihardt of Google Project Zero
CVE-2019-8685: akayn, Dongzhuo Zhao working with ADLab of Venustech,
Ken Wong (@wwkenwong) of VXRL, Anthony Lai (@darkfloyd1014) of VXRL,
and Eric Lung (@Khlung1) of VXRL
CVE-2019-8686: G. Geshev working with Trend Micro's Zero Day
Initiative
CVE-2019-8687: Apple
CVE-2019-8688: Insu Yun of SSLab at Georgia Tech
CVE-2019-8689: lokihardt of Google Project Zero

Additional recognition

Game Center
We would like to acknowledge Min (Spark) Zheng and Xiaolong Bai of
Alibaba Inc. for their assistance.

MobileInstallation
We would like to acknowledge Dany Lisiansky (@DanyL931) 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 12.4".

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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