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About the security content of iOS 11.3 - Apple Support

Description

## 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](<https://support.apple.com/kb/HT201222>) page. For more information about security, see the [Apple Product Security](<https://support.apple.com/kb/HT201220>) page. You can encrypt communications with Apple using the [Apple Product Security PGP Key](<https://support.apple.com/kb/HT201601>). Apple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible. ![](/library/content/dam/edam/applecare/images/en_US/mac_apps/itunes/divider.png) ## iOS 11.3 Released March 29, 2018 **Apple TV App** 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 spoof password prompts in the Apple TV App Description: An input validation issue was addressed through improved input validation. ****CVE-2018-4177: Jerry Decime Entry added April 13, 2018 **Clock** 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: An information disclosure issue existed in the handling of alarms and timers. This issue was addressed with improved access restrictions. CVE-2018-4123: Zaheen Hafzar M M (@zaheenhafzer) Entry updated November 16, 2018 **CoreFoundation** 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: A race condition was addressed with additional validation. CVE-2018-4155: Samuel Groß (@5aelo) CVE-2018-4158: Samuel Groß (@5aelo) **CoreText** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: Processing a maliciously crafted string may lead to a denial of service Description: A denial of service issue was addressed with improved memory handling. CVE-2018-4142: Robin Leroy of Google Switzerland GmbH Entry updated November 16, 2018 **LinkPresentation** 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-2018-4390: Rayyan Bijoora (@Bijoora) of The City School, PAF Chapter CVE-2018-4391: Rayyan Bijoora (@Bijoora) of The City School, PAF Chapter Entry added October 30, 2018, updated November 16, 2018 **File System Events** 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: A race condition was addressed with additional validation. CVE-2018-4167: Samuel Groß (@5aelo) **Files Widget** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: File Widget may display contents on a locked device Description: The File Widget was displaying cached data when in the locked state. This issue was addressed with improved state management. CVE-2018-4168: Brandon Moore **Find My iPhone** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: A person with physical access to the device may be able to disable Find My iPhone without entering an iCloud password Description: A state management issue existed when restoring from a back up. This issue was addressed through improved state checking during restore. CVE-2018-4172: Viljami Vastamäki **iCloud Drive** 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: A race condition was addressed with additional validation. CVE-2018-4151: Samuel Groß (@5aelo) **Kernel** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: Multiple memory corruption issues were addressed with improved memory handling. CVE-2018-4150: an anonymous researcher **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-2018-4104: The UK's National Cyber Security Centre (NCSC) **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-2018-4143: derrek (@derrekr6) **Kernel** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: A malicious application may be able to determine kernel memory layout Description: An information disclosure issue existed in the transition of program state. This issue was addressed with improved state handling. CVE-2018-4185: Brandon Azad Entry added July 19, 2018 **libxml2** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash Description: A use after free issue was addressed with improved memory management. CVE-2017-15412: Nick Wellnhofer Entry added October 18, 2018 **LinkPresentation** 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-2018-4390: Rayyan Bijoora (@Bijoora) of The City School, PAF Chapter CVE-2018-4391: Rayyan Bijoora (@Bijoora) of The City School, PAF Chapter Entry added October 30, 2018 **LinkPresentation** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: Processing a maliciously crafted text message may lead to UI spoofing Description: A spoofing issue existed in the handling of URLs. This issue was addressed with improved input validation. CVE-2018-4187: Roman Mueller (@faker_), Zhiyang Zeng (@Wester) of Tencent Security Platform Department Entry added September 17, 2019 **Mail** 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 intercept the contents of S/MIME-encrypted e-mail Description: An inconsistent user interface issue was addressed with improved state management. CVE-2018-4174: John McCombs of Integrated Mapping Ltd, McClain Looney of LoonSoft Inc. Entry updated April 13, 2018 **NSURLSession** 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: A race condition was addressed with additional validation. CVE-2018-4166: Samuel Groß (@5aelo) **PluginKit** 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: A race condition was addressed with additional validation. CVE-2018-4156: Samuel Groß (@5aelo) **Quick Look** 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: A race condition was addressed with additional validation. CVE-2018-4157: Samuel Groß (@5aelo) **Safari** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: Visiting a malicious website by clicking a link may lead to user interface spoofing Description: An inconsistent user interface issue was addressed with improved state management. CVE-2018-4134: xisigr of Tencent's Xuanwu Lab (tencent.com), Zhiyang Zeng (@Wester) of Tencent Security Platform Department **Safari Login AutoFill** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: A malicious website may be able to exfiltrate autofilled data in Safari without explicit user interaction. Description: Safari autofill did not require explicit user interaction before taking place. The issue was addressed with improved autofill heuristics. CVE-2018-4137 Entry updated November 16, 2018 **SafariViewController** 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 state management issue was addressed by disabling text input until the destination page loads. CVE-2018-4149: Abhinash Jain (@abhinashjain) **Security** 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 buffer overflow was addressed with improved size validation. CVE-2018-4144: Abraham Masri (@cheesecakeufo) **Status Bar** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: A malicious application may be able to access the microphone without indication to the user Description: A consistency issue existed in deciding when to show the microphone use indicator. The issue was resolved with improved capability validation. CVE-2018-4173: Joshua Pokotilow of pingmd Entry added April 9, 2018 **Storage** 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: A race condition was addressed with additional validation. CVE-2018-4154: Samuel Groß (@5aelo) **System Preferences** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: A configuration profile may incorrectly remain in effect after removal Description: An issue existed in CFPreferences. This issue was addressed with improved preferences cleanup. CVE-2018-4115: Johann Thalakada, Vladimir Zubkov, and Matt Vlasach of Wandera Entry updated November 16, 2018 **Telephony** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: A remote attacker can cause a device to unexpectedly restart Description: A null pointer dereference issue existed when handling Class 0 SMS messages. This issue was addressed with improved message validation. CVE-2018-4140: @mjonsson, Arjan van der Oest of Voiceworks BV Entry updated November 16, 2018 **Telephony** Available for: iPhone 5s and later, and Wi-Fi + Cellular models of iPad Air and later Impact: A remote attacker may be able to execute arbitrary code Description: Multiple buffer overflows were addressed with improved input validation. CVE-2018-4148: Nico Golde of Comsecuris UG Entry added March 30, 2018 **Web App** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: Cookies may unexpectedly persist in web app Description: A cookie management issue was addressed with improved state management. CVE-2018-4110: Ben Compton and Jason Colley of Cerner Corporation Entry updated November 16, 2018 **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-2018-4101: Yuan Deng of Ant-financial Light-Year Security Lab CVE-2018-4114: found by OSS-Fuzz CVE-2018-4118: Jun Kokatsu (@shhnjk) CVE-2018-4119: an anonymous researcher working with Trend Micro's Zero Day Initiative CVE-2018-4120: Hanming Zhang (@4shitak4) of Qihoo 360 Vulcan Team CVE-2018-4121: Natalie Silvanovich of Google Project Zero CVE-2018-4122: WanderingGlitch of Trend Micro’s Zero Day Initiative CVE-2018-4125: WanderingGlitch of Trend Micro's Zero Day Initiative CVE-2018-4127: an anonymous researcher working with Trend Micro's Zero Day Initiative CVE-2018-4128: Zach Markley CVE-2018-4129: likemeng of Baidu Security Lab working with Trend Micro's Zero Day Initiative CVE-2018-4130: Omair working with Trend Micro's Zero Day Initiative CVE-2018-4161: WanderingGlitch of Trend Micro's Zero Day Initiative CVE-2018-4162: WanderingGlitch of Trend Micro's Zero Day Initiative CVE-2018-4163: WanderingGlitch of Trend Micro's Zero Day Initiative CVE-2018-4165: Hanming Zhang (@4shitak4) of Qihoo 360 Vulcan Team **WebKit** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: Unexpected interaction with indexing types causing an ASSERT failure Description: An array indexing issue existed in the handling of a function in javascript core. This issue was addressed through improved checks CVE-2018-4113: found by OSS-Fuzz **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 denial of service Description: A memory corruption issue was addressed through improved input validation CVE-2018-4146: found by OSS-Fuzz **WebKit** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: A malicious website may exfiltrate data cross-origin Description: A cross-origin issue existed with the fetch API. This was addressed through improved input validation. CVE-2018-4117: an anonymous researcher, an anonymous researcher **WebKit** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: Unexpected interaction causes an ASSERT failure Description: This issue was addressed with improved checks. CVE-2018-4207: found by OSS-Fuzz Entry added May 2, 2018 **WebKit** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: Unexpected interaction causes an ASSERT failure Description: This issue was addressed with improved checks. CVE-2018-4208: found by OSS-Fuzz Entry added May 2, 2018 **WebKit** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: Unexpected interaction causes an ASSERT failure Description: This issue was addressed with improved checks. CVE-2018-4209: found by OSS-Fuzz Entry added May 2, 2018 **WebKit** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: Unexpected interaction with indexing types caused a failure Description: An array indexing issue existed in the handling of a function in javascript core. This issue was addressed with improved checks. CVE-2018-4210: found by OSS-Fuzz Entry added May 2, 2018 **WebKit** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: Unexpected interaction causes an ASSERT failure Description: This issue was addressed with improved checks. CVE-2018-4212: found by OSS-Fuzz Entry added May 2, 2018 **WebKit** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: Unexpected interaction causes an ASSERT failure Description: This issue was addressed with improved checks. CVE-2018-4213: found by OSS-Fuzz Entry added May 2, 2018 **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 code execution Description: Multiple memory corruption issues were addressed with improved memory handling. CVE-2018-4145: found by OSS-Fuzz Entry added October 18, 2018 **WindowServer** Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation Impact: An unprivileged application may be able to log keystrokes entered into other applications even when secure input mode is enabled Description: By scanning key states, an unprivileged application could log keystrokes entered into other applications even when secure input mode was enabled. This issue was addressed by improved state management. CVE-2018-4131: Andreas Hegenberg of folivora.AI GmbH ![](/library/content/dam/edam/applecare/images/en_US/mac_apps/itunes/divider.png) ## Additional recognition **Mail** We would like to acknowledge Sabri Haddouche (@pwnsdx) from Wire Swiss GmbH for their assistance. Entry added June 21, 2018 **Security** We would like to acknowledge Abraham Masri (@cheesecakeufo) for their assistance. Entry added April 13, 2018 **WebKit** We would like to acknowledge Johnny Nipper of Tinder Security Team for their assistance.


Affected Software


CPE Name Name Version
ios 11.3

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