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