About the security content of iOS 13.3.1 and iPadOS 13.3.1
This document describes the security content of iOS 13.3.1 and iPadOS 13.3.1.
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 13.3.1 and iPadOS 13.3.1
Audio
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-2020-3857: 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: A remote FaceTime user may be able to cause the local user's camera self-view to display the incorrect camera
Description: An issue existed in the handling of the local user's self-view. The issue was corrected with improved logic.
CVE-2020-3869: Elisa Lee
files
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: A malicious application may be able to overwrite arbitrary files
Description: An access issue was addressed with improved access restrictions.
CVE-2020-3855: Csaba Fitzl (@theevilbit)
ImageIO
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: processing a maliciously crafted image may lead to arbitrary code execution
Description: An out-of-bounds read was addressed with improved input validation.
CVE-2020-3826: Samuel Groß of Google Project Zero
CVE-2020-3870
CVE-2020-3878: Samuel Groß of Google Project Zero
CVE-2020-3880: Samuel Groß of Google Project Zero
IOAcceleratorFamily
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-2020-3837: Brandon Azad of Google Project Zero
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
IPSec
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: Loading a maliciously crafted racoon configuration file may lead to arbitrary code execution
Description: An-off-by one issue existed in the handling of racoon configuration files. This issue was addressed through improved bounds checking.
CVE-2020-3840: @littlelailo
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 read restricted memory
Description: A validation issue was addressed with improved input sanitisation.
CVE-2020-3875: Brandon Azad 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 read restricted memory
Description: A memory initialisation issue was addressed with improved memory handling.
CVE-2020-3872: Haakon Garseg Mørk of Cognite and Cim Stordal of Cognite
Kernel
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: A malicious application may be able to determine kernel memory layout
Description: An access issue was addressed with improved memory management.
CVE-2020-3836: Brandon Azad 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-2020-3842: Ned Williamson working with Google Project Zero
CVE-2020-3858: Xiaolong Bai and Min (Spark) Zheng of Alibaba Inc, 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 race condition was addressed with improved locking.
CVE-2020-3831: Chilik Tamir of Zimperium zLabs, Corellium, Proteas of Qihoo 360 Nirvan Team
Kernel
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: A malicious application may be able to execute arbitrary code with system privileges
Description: A type confusion issue was addressed with improved memory handling.
CVE-2020-3853: Brandon Azad 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 input validation.
CVE-2020-3860: Proteas of Qihoo 360 Nirvan Team
libxml2
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 XML may lead to an unexpected application termination or arbitrary code execution
Description: A buffer overflow was addressed with improved size validation.
CVE-2020-3846: Ranier Vilela
libxpc
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: Processing a maliciously crafted string may lead to heap corruption
Description: A memory corruption issue was addressed with improved input validation.
CVE-2020-3856: Ian Beer of Google Project Zero
libxpc
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: An out-of-bounds read was addressed with improved bounds checking.
CVE-2020-3829: Ian Beer of Google Project Zero
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: Turning off "Load remote content in messages” may not apply to all mail previews
Description: This issue was addressed with improved setting propagation.
CVE-2020-3873: Alexander Heinrich (@Sn0wfreeze) of Technische Universität Darmstadt, Hudson Pridham of Bridgeable, Stuart Chapman
Messages
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: A person with physical access to an iOS device may be able to access contacts from the lock screen
Description: An inconsistent user interface issue was addressed with improved state management.
CVE-2020-3859: Andrew Gonzalez, Simone PC
Messages
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: Users removed from an iMessage conversation may still be able to alter state
Description: This issue was addressed with improved checks.
CVE-2020-3844: Ayden Panhuyzen (@aydenpanhuyzen) and Jamie Bishop (@jamiebishop123) of Dynastic, Lance Rodgers of Oxon Hill High School
Phone
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: A person with physical access to an iOS device may be able to access 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-2020-3828: an anonymous researcher
Safari Login AutoFill
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: A local user may unknowingly send a password unencrypted over the network
Description: The issue was addressed with improved UI handling.
CVE-2020-3841: Sebastian Bicchi (@secresDoge) from Sec-Research
Screenshots
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: Screenshots of the Messages app may reveal additional message content
Description: An issue existed in the naming of screenshots. The issue was corrected with improved naming.
CVE-2020-3874: Nicolas Luckie of Durham College
WebKit
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: A malicious website may be able to cause a denial of service
Description: A denial of service issue was addressed with improved memory handling.
CVE-2020-3862: Srikanth Gatta of Google Chrome
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-2020-3825: Przemysław Sporysz of Euvic
CVE-2020-3868: Marcin Towalski of Cisco Talos
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 universal cross-site scripting
Description: A logic issue was addressed with improved state management.
CVE-2020-3867: an anonymous researcher
WebKit Page Loading
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: A DOM object context may not have had a unique security origin
Description: A logic issue was addressed with improved validation.
CVE-2020-3864: Ryan Pickren (ryanpickren.com)
WebKit Page Loading
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: A top-level DOM object context may have incorrectly been considered secure
Description: A logic issue was addressed with improved validation.
CVE-2020-3865: Ryan Pickren (ryanpickren.com)
Wi-Fi
Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)
Impact: A remote attacker may be able to cause unexpected system termination or corrupt kernel memory
Description: a memory corruption issue was addressed with improved input validation.
CVE-2020-3843: Ian Beer of Google Project Zero
wifivelocityd
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: The issue was addressed with improved permissions logic.
CVE-2020-3838: Dayton Pidhirney (@_watbulb)
Additional recognition
IOSurface
We would like to acknowledge Liang Chen (@chenliang0817) for their assistance.
Photos Storage
We would like to acknowledge Allison Husain of UC Berkeley for their assistance.
Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. Contact the vendor for additional information.