About the security content of iOS 12.3
This document describes the security content of iOS 12.3.
About Apple security updates
For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page.
Apple security documents reference vulnerabilities by CVE-ID when possible.
For more information about security, see the Apple Product Security page.
iOS 12.3
AppleFileConduit
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-2019-8593: Dany Lisiansky (@DanyL931)
Bluetooth
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: Due to a misconfiguration in the Bluetooth pairing protocols of a Bluetooth Low Energy (BLE) version of FIDO Security Keys it may be possible for an attacker with physical proximity to be able to intercept Bluetooth traffic during pairing
Description: This issue was addressed by disabling accessories with insecure Bluetooth connections. Customers using the Bluetooth Low Energy (BLE) version of the Titan Security Key by Google should review Android’s June Bulletins and Google’s advisory and take appropriate action.
CVE-2019-2102: Matt Beaver and Erik Peterson of Microsoft Corp.
Contacts
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 input validation issue was addressed with improved input validation.
CVE-2019-8598: Omer Gull of Checkpoint Research
CoreAudio
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: Processing a maliciously crafted movie file may lead to arbitrary code execution
Description: An out-of-bounds read was addressed with improved input validation.
CVE-2019-8585: riusksk of VulWar Corp working with Trend Micro's Zero Day Initiative
CoreAudio
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: Processing a maliciously crafted audio file may lead to arbitrary code execution
Description: A memory corruption issue was addressed with improved error handling.
CVE-2019-8592: riusksk of VulWar Corp working with Trend Micro's Zero Day Initiative
CoreText
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: Processing a maliciously crafted font may result in the disclosure of process memory
Description: An out-of-bounds read was addressed with improved bounds checking.
CVE-2019-8582: riusksk of VulWar Corp working with Trend Micro's Zero Day Initiative
Disk Images
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: A validation issue was addressed with improved input sanitization.
CVE-2019-8560: Nikita Pupyshev of Bauman Moscow State Technological University
Kernel
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: A validation issue was addressed with improved input sanitization.
CVE-2019-8633: Zhuo Liang of Qihoo 360 Vulcan Team
Kernel
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A local user may be able to cause unexpected system termination or read kernel memory
Description: An out-of-bounds read was addressed with improved bounds checking.
CVE-2019-8576: Brandon Azad of Google Project Zero, Junho Jang and Hanul Choi of LINE Security Team
Kernel
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: An application may be able to cause unexpected system termination or write kernel memory
Description: A type confusion issue was addressed with improved memory handling.
CVE-2019-8591: Ned Williamson working with Google Project Zero
Lock Screen
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 see the email address used for iTunes
Description: A logic issue was addressed with improved restrictions.
CVE-2019-8599: Jeremy Peña-Lopez (aka Radio) of the University of North Florida
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: An input validation issue was addressed with improved input validation.
CVE-2019-8626: natashenka of Google Project Zero
Mail Message Framework
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
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-2019-8613: natashenka of Google Project Zero
Messages
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 system denial of service
Description: An input validation issue was addressed with improved input validation.
CVE-2019-8573: natashenka of Google Project Zero
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: An input validation issue was addressed with improved input validation.
CVE-2019-8664: natashenka of Google Project Zero
Messages
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: Users removed from an iMessage conversation may still be able to alter state
Description: A logic issue was addressed with improved state management.
CVE-2019-8631: Jamie Bishop of Dynastic
MobileInstallation
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A local user may be able to modify protected parts of the file system
Description: A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks.
CVE-2019-8568: Dany Lisiansky (@DanyL931)
MobileLockdown
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A malicious application may be able to gain root privileges
Description: An input validation issue was addressed with improved input validation.
CVE-2019-8637: Dany Lisiansky (@DanyL931)
Photos Storage
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A sandboxed process may be able to circumvent sandbox restrictions
Description: An access issue was addressed with additional sandbox restrictions.
CVE-2019-8617: an anonymous researcher
SQLite
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: An input validation issue was addressed with improved memory handling.
CVE-2019-8577: Omer Gull of Checkpoint Research
SQLite
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A maliciously crafted SQL query may lead to arbitrary code execution
Description: A memory corruption issue was addressed with improved input validation.
CVE-2019-8600: Omer Gull of Checkpoint Research
SQLite
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 input validation issue was addressed with improved input validation.
CVE-2019-8598: Omer Gull of Checkpoint Research
SQLite
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 memory corruption issue was addressed by removing the vulnerable code.
CVE-2019-8602: Omer Gull of Checkpoint Research
Status Bar
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: The lock screen may show a locked icon after unlocking
Description: The issue was addressed with improved UI handling.
CVE-2019-8630: Jon M. Morlan
StreamingZip
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A local user may be able to modify protected parts of the file system
Description: A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks.
CVE-2019-8568: Dany Lisiansky (@DanyL931)
sysdiagnose
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: The issue was addressed with improved permissions logic.
CVE-2019-8574: Dayton Pidhirney (@_watbulb) of Seekintoo (@seekintoo)
WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: Processing maliciously crafted web content may result in the disclosure of process memory
Description: An out-of-bounds read was addressed with improved input validation.
CVE-2019-8607: Junho Jang and Hanul Choi of LINE Security Team
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-2019-6237: G. Geshev working with Trend Micro Zero Day Initiative, Liu Long of Qihoo 360 Vulcan Team
CVE-2019-8571: 01 working with Trend Micro's Zero Day Initiative
CVE-2019-8583: sakura of Tencent Xuanwu Lab, jessica (@babyjess1ca_) of Tencent Keen Lab, and dwfault working at ADLab of Venustech
CVE-2019-8584: G. Geshev of MWR Labs working with Trend Micro Zero Day Initiative
CVE-2019-8586: an anonymous researcher
CVE-2019-8587: G. Geshev working with Trend Micro Zero Day Initiative
CVE-2019-8594: Suyoung Lee and Sooel Son of KAIST Web Security & Privacy Lab and HyungSeok Han and Sang Kil Cha of KAIST SoftSec Lab
CVE-2019-8595: G. Geshev from MWR Labs working with Trend Micro Zero Day Initiative
CVE-2019-8596: Wen Xu of SSLab at Georgia Tech
CVE-2019-8597: 01 working with Trend Micro Zero Day Initiative
CVE-2019-8601: Fluoroacetate working with Trend Micro's Zero Day Initiative
CVE-2019-8608: G. Geshev working with Trend Micro Zero Day Initiative
CVE-2019-8609: Wen Xu of SSLab, Georgia Tech
CVE-2019-8610: Anonymous working with Trend Micro Zero Day Initiative
CVE-2019-8611: Samuel Groß of Google Project Zero
CVE-2019-8615: G. Geshev from MWR Labs working with Trend Micro's Zero Day Initiative
CVE-2019-8619: Wen Xu of SSLab at Georgia Tech and Hanqing Zhao of Chaitin Security Research Lab
CVE-2019-8622: Samuel Groß of Google Project Zero
CVE-2019-8623: Samuel Groß of Google Project Zero
CVE-2019-8628: Wen Xu of SSLab at Georgia Tech and Hanqing Zhao of Chaitin Security Research Lab
Wi-Fi
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: An attacker in a privileged network position can modify driver state
Description: A logic issue was addressed with improved state management.
CVE-2019-8612: Milan Stute of Secure Mobile Networking Lab at Technische Universität Darmstadt
Wi-Fi
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A device may be passively tracked by its Wi-Fi MAC address
Description: A user privacy issue was addressed by removing the broadcast MAC address.
CVE-2019-8620: David Kreitschmann and Milan Stute of Secure Mobile Networking Lab at Technische Universität Darmstadt
Additional recognition
Clang
We would like to acknowledge Brandon Azad of Google Project Zero for their assistance.
CoreAudio
We would like to acknowledge riusksk of VulWar Corp working with Trend Micro's Zero Day Initiative for their assistance.
CoreFoundation
We would like to acknowledge m4bln, Xiangqian Zhang, Huiming Liu of Tencent's Xuanwu Lab, Vozzie and Rami for their assistance.
Kernel
We would like to acknowledge Denis Kopyrin, Brandon Azad of Google Project Zero for their assistance.
MediaLibrary
We would like to acknowledge Angel Ramirez and Min (Spark) Zheng, Xiaolong Bai of Alibaba Inc. for their assistance.
MobileInstallation
We would like to acknowledge Yiğit Can YILMAZ (@yilmazcanyigit) for their assistance.
Safari
We would like to acknowledge Ben Guild (@benguild) for their assistance.
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