About the security content of iOS 11.2.5

This document describes the security content of iOS 11.2.5.

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.

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Apple security documents reference vulnerabilities by CVE-ID when possible.

iOS 11.2.5

Released January 23, 2018

Audio

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 through improved input validation.

CVE-2018-4094: Mingi Cho, MinSik Shin, Seoyoung Kim, Yeongho Lee and Taekyoung Kwon of the Information Security Lab, Yonsei University

Core Bluetooth

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-2018-4087: Rani Idan (@raniXCH) of Zimperium zLabs Team

CVE-2018-4095: Rani Idan (@raniXCH) of Zimperium zLabs Team

Graphics Driver

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-2018-4109: Adam Donenfeld (@doadam) of the Zimperium zLabs Team

Entry added February 8, 2018

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 memory initialization issue was addressed through improved memory handling.

CVE-2018-4090: Jann Horn of Google Project Zero

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 race condition was addressed through improved memory handling.

CVE-2018-4092: Stefan Esser of Antid0te UG

Entry updated February 8, 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 execute arbitrary code with kernel privileges

Description: A memory corruption issue was addressed through improved input validation.

CVE-2018-4082: Russ Cox of Google

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-2018-4093: Jann Horn of Google Project Zero

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-2018-4189: an anonymous researcher

Entry added May 2, 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 application denial of service

Description: A resource exhaustion issue was addressed through improved input validation.

CVE-2018-4100: Abraham Masri (@cheesecakeufo)

QuartzCore

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 existed in the processing of web content. This issue was addressed through improved input validation.

CVE-2018-4085: Ret2 Systems Inc. working with Trend Micro's Zero Day Initiative

Security

Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation

Impact: A certificate may have name constraints applied incorrectly

Description: A certificate evaluation issue existed in the handling of name constraints. This issue was addressed through improved trust evaluation of certificates.

CVE-2018-4086: Ian Haken of Netflix

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-2018-4088: Jeonghoon Shin of Theori

CVE-2018-4089: Ivan Fratric of Google Project Zero

CVE-2018-4096: 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 arbitrary code execution

Description: Multiple memory corruption issues were addressed with improved memory handling.

CVE-2018-4147: found by OSS-Fuzz

Entry added October 18, 2018

WebKit Page Loading

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-2017-7830: Jun Kokatsu (@shhnjk)

Entry added October 18, 2018

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