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.
For more information about security, see the Apple Product Security page. You can encrypt communications with Apple using the Apple Product Security PGP Key.
Apple security documents reference vulnerabilities by CVE-ID when possible.
iOS 12.1.1
Released December 5, 2018
Airport
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 type confusion issue was addressed with improved memory handling.
CVE-2018-4303: Mohamed Ghannam (@_simo36)
Disk Images
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-2018-4465: Pangu Team
FaceTime
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A local attacker may be able to view contacts from the lock screen
Description: A lock screen issue allowed access to contacts on a locked device. This issue was addressed with improved state management.
CVE-2018-4430: videosdebarraquito
File Provider
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A malicious application may be able to learn information about the presence of other applications on the device
Description: This issue was addressed with improved entitlements.
CVE-2018-4446: Luke Deshotels, Jordan Beichler, and William Enck of North Carolina State
University; Costin Carabaș and Răzvan Deaconescu of University POLITEHNICA of Bucharest
Kernel
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A local user may be able to read kernel memory
Description: A memory initialization issue was addressed with improved memory handling.
CVE-2018-4431: An independent security researcher has reported this vulnerability to Beyond Security’s SecuriTeam Secure Disclosure program
CVE-2018-4448: Brandon Azad
Entry added June 24, 2019
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 by removing the vulnerable code.
CVE-2018-4460: Kevin Backhouse of Semmle Security Research 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 read kernel memory
Description: A memory initialization issue was addressed with improved memory handling.
CVE-2018-4431: An independent security researcher has reported this vulnerability to Beyond Security’s SecuriTeam Secure Disclosure program
Entry updated December 18, 2018
Kernel
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 logic issue was addressed with improved restrictions.
CVE-2018-4435: Jann Horn of Google Project Zero, Juwei Lin(@panicaII) and Junzhi Lu of TrendMicro Mobile Security Team working with Trend Micro's Zero Day Initiative
Entry updated December 18, 2018
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 state management.
CVE-2018-4447: Juwei Lin(@panicaII) and Zhengyu Dong of TrendMicro Mobile Security Team working with Trend Micro's Zero Day Initiative
Entry updated December 18, 2018
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 input validation.
CVE-2018-4461: Ian Beer of Google Project Zero
LinkPresentation
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: Processing a maliciously crafted email may lead to user interface spoofing
Description: A spoofing issue existed in the handling of URLs. This issue was addressed with improved input validation.
CVE-2018-4429: Victor Le Pochat of imec-DistriNet, KU Leuven
Profiles
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: An untrusted configuration profile may be incorrectly displayed as verified
Description: A certificate validation issue existed in configuration profiles. This was addressed with additional checks.
CVE-2018-4436: James Seeley @Code4iOS, Joseph S. of JJS Securities
Entry updated December 18, 2018
Safari
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: Visiting a malicious website may lead to user interface spoofing
Description: A logic issue was addressed with improved validation.
CVE-2018-4439: xisigr of Tencent's Xuanwu Lab (tencent.com)
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: A logic issue was addressed with improved state management.
CVE-2018-4440: Wenxu Wu of Tencent Security Xuanwu Lab (xlab.tencent.com)
Safari
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A user may be unable to fully delete browsing history
Description: "Clear History and Website Data" did not clear the history. The issue was addressed with improved data deletion.
CVE-2018-4445: William Breuer
VoiceOver
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A local attacker may be able to share items from the lock screen
Description: A lock screen issue allowed access to the share function on a locked device. This issue was addressed by restricting options offered on a locked device.
CVE-2018-4428: videosdebarraquito
Entry added January 22, 2019
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-2018-4441: lokihardt of Google Project Zero
CVE-2018-4442: lokihardt of Google Project Zero
CVE-2018-4443: lokihardt of Google Project Zero
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 logic issue existed resulting in memory corruption. This was addressed with improved state management.
CVE-2018-4438: lokihardt of Google Project Zero, Qixun Zhao of Qihoo 360 Vulcan Team
Entry updated January 22, 2019
WebKit
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: Processing maliciously crafted web content may disclose sensitive user information
Description: A logic issue was addressed with improved state management.
CVE-2018-4444: James Lee (@Windowsrcer) of S2SWWW.com
Entry added April 3, 2019, updated September 17, 2019
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-2018-4437: HyungSeok Han, DongHyeon Oh, and Sang Kil Cha of KAIST Softsec Lab, Korea
CVE-2018-4464: HyungSeok Han, DongHyeon Oh, and Sang Kil Cha of KAIST Softsec Lab, Korea
Additional recognition
Profiles
We would like to acknowledge Luke Deshotels, Jordan Beichler, and William Enck of North Carolina State University, and Costin Carabaș and Răzvan Deaconescu of University POLITEHNICA of Bucharest for their assistance.
SafariViewController
We would like to acknowledge Yiğit Can YILMAZ (@yilmazcanyigit) for their assistance.