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AUSCERT External Security Bulletin Redistribution
ESB-2020.3918
APPLE-SA-2020-11-05-3 watchOS 7.1
9 November 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Apple watchOS
Publisher: Apple
Operating System: Apple iOS
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Root Compromise -- Unknown/Unspecified
Increased Privileges -- Existing Account
Access Privileged Data -- Unknown/Unspecified
Denial of Service -- Remote with User Interaction
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-27950 CVE-2020-27932 CVE-2020-27930
CVE-2020-27927 CVE-2020-27918 CVE-2020-27917
CVE-2020-27916 CVE-2020-27912 CVE-2020-27911
CVE-2020-27910 CVE-2020-27909 CVE-2020-27905
CVE-2020-10017 CVE-2020-10016 CVE-2020-10010
CVE-2020-10003 CVE-2020-10002 CVE-2020-9974
Reference: ESB-2020.3911
ESB-2020.3910
ESB-2020.3909
ESB-2020.3916
ESB-2020.3917
Original Bulletin:
https://support.apple.com/en-us/HT211928
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APPLE-SA-2020-11-05-3 watchOS 7.1
watchOS 7.1 is now available and address the following issues.
Information about the security content is also available at
https://support.apple.com/HT211928.
Audio
Available for: Apple Watch Series 3 and later
Impact: Processing a maliciously crafted audio file may lead to
arbitrary code execution
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2020-27910: JunDong Xie and XingWei Lin of Ant Security Light-
Year Lab
Audio
Available for: Apple Watch Series 3 and later
Impact: Processing a maliciously crafted audio file may lead to
arbitrary code execution
Description: An out-of-bounds write was addressed with improved input
validation.
CVE-2020-27916: JunDong Xie of Ant Security Light-Year Lab
CoreAudio
Available for: Apple Watch Series 3 and later
Impact: Processing a maliciously crafted audio file may lead to
arbitrary code execution
Description: An out-of-bounds write was addressed with improved input
validation.
CVE-2020-10017: Francis working with Trend Micro Zero Day Initiative,
JunDong Xie of Ant Security Light-Year Lab
CoreAudio
Available for: Apple Watch Series 3 and later
Impact: Processing a maliciously crafted audio file may lead to
arbitrary code execution
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2020-27909: Anonymous working with Trend Micro Zero Day
Initiative, JunDong Xie and XingWei Lin of Ant Security Light-Year
Lab
Crash Reporter
Available for: Apple Watch Series 3 and later
Impact: A local attacker may be able to elevate their privileges
Description: An issue existed within the path validation logic for
symlinks. This issue was addressed with improved path sanitization.
CVE-2020-10003: Tim Michaud (@TimGMichaud) of Leviathan
FontParser
Available for: Apple Watch Series 3 and later
Impact: Processing a maliciously crafted font may lead to arbitrary
code execution. Apple is aware of reports that an exploit for this
issue exists in the wild.
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2020-27930: Google Project Zero
FontParser
Available for: Apple Watch Series 3 and later
Impact: Processing a maliciously crafted font file may lead to
arbitrary code execution
Description: An out-of-bounds write issue was addressed with improved
bounds checking.
CVE-2020-27927: Xingwei Lin of Ant Security Light-Year Lab
Foundation
Available for: Apple Watch Series 3 and later
Impact: A local user may be able to read arbitrary files
Description: A logic issue was addressed with improved state
management.
CVE-2020-10002: James Hutchins
ImageIO
Available for: Apple Watch Series 3 and later
Impact: Processing a maliciously crafted image may lead to arbitrary
code execution
Description: An out-of-bounds write was addressed with improved input
validation.
CVE-2020-27912: Xingwei Lin of Ant Security Light-Year Lab
IOAcceleratorFamily
Available for: Apple Watch Series 3 and later
Impact: A malicious application may be able to execute arbitrary code
with system privileges
Description: A memory corruption issue was addressed with improved
state management.
CVE-2020-27905: Mohamed Ghannam (@_simo36)
Kernel
Available for: Apple Watch Series 3 and later
Impact: A malicious application may be able to disclose kernel
memory. Apple is aware of reports that an exploit for this issue
exists in the wild.
Description: A memory initialization issue was addressed.
CVE-2020-27950: Google Project Zero
Kernel
Available for: Apple Watch Series 3 and later
Impact: A malicious application may be able to determine kernel
memory layout
Description: A logic issue was addressed with improved state
management.
CVE-2020-9974: Tommy Muir (@Muirey03)
Kernel
Available for: Apple Watch Series 3 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-2020-10016: Alex Helie
Kernel
Available for: Apple Watch Series 3 and later
Impact: A malicious application may be able to execute arbitrary code
with kernel privileges. Apple is aware of reports that an exploit for
this issue exists in the wild.
Description: A type confusion issue was addressed with improved state
handling.
CVE-2020-27932: Google Project Zero
libxml2
Available for: Apple Watch Series 3 and later
Impact: Processing maliciously crafted web content may lead to code
execution
Description: A use after free issue was addressed with improved
memory management.
CVE-2020-27917: found by OSS-Fuzz
libxml2
Available for: Apple Watch Series 3 and later
Impact: A remote attacker may be able to cause unexpected application
termination or arbitrary code execution
Description: An integer overflow was addressed through improved input
validation.
CVE-2020-27911: found by OSS-Fuzz
Logging
Available for: Apple Watch Series 3 and later
Impact: A local attacker may be able to elevate their privileges
Description: A path handling issue was addressed with improved
validation.
CVE-2020-10010: Tommy Muir (@Muirey03)
WebKit
Available for: Apple Watch Series 3 and later
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-2020-27918: an anonymous researcher
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".
This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/
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===========================================================================
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The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
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