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AUSCERT External Security Bulletin Redistribution
ESB-2020.0354
watchOS 6.1.2
31 January 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: watchOS
Publisher: Apple
Operating System: Apple iOS
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Root Compromise -- Existing Account
Increased Privileges -- Existing Account
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3878 CVE-2020-3877 CVE-2020-3875
CVE-2020-3872 CVE-2020-3870 CVE-2020-3860
CVE-2020-3857 CVE-2020-3856 CVE-2020-3853
CVE-2020-3842 CVE-2020-3838 CVE-2020-3837
CVE-2020-3836 CVE-2020-3834 CVE-2020-3829
Reference: ESB-2020.0351
ESB-2020.0353
Original Bulletin:
https://support.apple.com/en-us/HT210921
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APPLE-SA-2020-1-28-3 watchOS 6.1.2
watchOS 6.1.2 is now available and addresses the following:
AnnotationKit
Available for: Apple Watch Series 1 and later
Impact: A remote attacker may be able to cause unexpected application
termination or arbitrary code execution
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2020-3877: an anonymous researcher working with Trend Micro's
Zero Day Initiative
Audio
Available for: Apple Watch Series 1 and later
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
ImageIO
Available for: Apple Watch Series 1 and later
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-2020-3870
CVE-2020-3878: Samuel Gross of Google Project Zero
IOAcceleratorFamily
Available for: Apple Watch Series 1 and later
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
Kernel
Available for: Apple Watch Series 1 and later
Impact: An application may be able to read restricted memory
Description: A validation issue was addressed with improved input
sanitization.
CVE-2020-3875: Brandon Azad of Google Project Zero
Kernel
Available for: Apple Watch Series 1 and later
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: Apple Watch Series 1 and later
Impact: An application may be able to read restricted memory
Description: A memory initialization issue was addressed with
improved memory handling.
CVE-2020-3872: Haakon Garseg Mork of Cognite and Cim Stordal of
Cognite
Kernel
Available for: Apple Watch Series 1 and later
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
Kernel
Available for: Apple Watch Series 1 and later
Impact: An application may be able to execute arbitrary code with
kernel privileges
Description: A memory corruption issue was addressed with improved
state management.
CVE-2020-3834: Xiaolong Bai and Min (Spark) Zheng of Alibaba Inc,
Luyi Xing of Indiana University Bloomington
Kernel
Available for: Apple Watch Series 1 and later
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
Kernel
Available for: Apple Watch Series 1 and later
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
libxpc
Available for: Apple Watch Series 1 and later
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: Apple Watch Series 1 and later
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
wifivelocityd
Available for: Apple Watch Series 1 and later
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.
Installation note:
Instructions on how to update your Apple Watch software are
available at https://support.apple.com/kb/HT204641
To check the version on your Apple Watch, open the Apple Watch app
on your iPhone and select "My Watch > General > About".
Alternatively, on your watch, select "My Watch > General > About".
Information will also be posted to the Apple Security Updates
web site: https://support.apple.com/kb/HT201222
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
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