About the security content of iOS 13.3 and iPadOS 13.3

This document describes the security content of iOS 13.3 and iPadOS 13.3.

About Apple security updates

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iOS 13.3 and iPadOS 13.3

Released December 10, 2019

CallKit

Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch 7th generation

Impact: Calls made using Siri may be initiated using the wrong cellular plan on devices with two active plans

Description: An API issue existed in the handling of outgoing phone calls initiated with Siri. This issue was addressed with improved state handling.

CVE-2019-8856: Fabrice TERRANCLE of TERRANCLE SARL

CFNetwork Proxies

Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch 7th generation

Impact: An application may be able to gain elevated privileges

Description: This issue was addressed with improved checks.

CVE-2019-8848: Zhuo Liang of Qihoo 360 Vulcan Team

FaceTime

Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch 7th generation

Impact: Processing malicious video via FaceTime may lead to arbitrary code execution

Description: An out-of-bounds read was addressed with improved input validation.

CVE-2019-8830: Natalie Silvanovich of Google Project Zero

IOSurfaceAccelerator

Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch 7th generation

Impact: An application may be able to execute arbitrary code with kernel privileges

Description: An information disclosure issue was addressed by removing the vulnerable code.

CVE-2019-8841: Corellium

IOUSBDeviceFamily

Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch 7th 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-2019-8836: Xiaolong Bai and Min (Spark) Zheng of Alibaba Inc. and Luyi Xing of Indiana University Bloomington

Kernel

Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch 7th generation

Impact: An application may be able to execute arbitrary code with kernel privileges

Description: A memory corruption issue was addressed by removing the vulnerable code.

CVE-2019-8833: Ian Beer of Google Project Zero

Kernel

Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch 7th 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-2019-8828: Cim Stordal of Cognite

CVE-2019-8838: Dr Silvio Cesare of InfoSect

libexpat

Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch 7th generation

Impact: Parsing a maliciously crafted XML file may lead to disclosure of user information

Description: This issue was addressed by updating to expat version 2.2.8.

CVE-2019-15903: Joonun Jang

Photos

Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch 7th generation

Impact: Live Photo audio and video data may be shared via iCloud links even if Live Photo is disabled in the Share Sheet carousel

Description: The issue was addressed with improved validation when an iCloud Link is created.

CVE-2019-8857: Tor Bruce

Security

Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch 7th 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-2019-8832: Insu Yun of SSLab at Georgia Tech

WebKit

Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch 7th 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-2019-8835: Anonymous working with Trend Micro's Zero Day Initiative, Mike Zhang of Pangu Team

CVE-2019-8844: William Bowling (@wcbowling)

WebKit

Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch 7th generation

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: A use after free issue was addressed with improved memory management.

CVE-2019-8846: Marcin Towalski of Cisco Talos

Additional recognition

Accounts

We would like to acknowledge Kishan Bagaria (KishanBagaria.com) and Tom Snelling of Loughborough University for their assistance.

Core Data

We would like to acknowledge Natalie Silvanovich of Google Project Zero for their assistance.

Settings

We would like to acknowledge an anonymous researcher for their assistance.

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