Multiple Vulnerabilities in Apple Products Could Allow for Arbitrary Code Execution

DESCRIPTION:
Multiple vulnerabilities have been discovered in Apple Products, the
most severe of which could allow for arbitrary code execution.

* iOS is a mobile operating system for mobile devices, including the
iPhone, iPad, and iPod touch.
* iPadOS is the successor to iOS 12 and is a mobile operating system for
iPads.
* macOS Monterey is the 18th and current major release of macOS.
* macOS Big Sur is the 17th release of macOS.
* macOS Catalina is the 16th major release of macOS
* watchOS is the mobile operating system for Apple Watch and is based on
the iOS operating system.
* tvOS is an operating system for fourth-generation Apple TV digital
media player.

Successful exploitation of the most severe of these vulnerabilities
could result in arbitrary code execution within the context of the
application, an attacker gaining the same privileges as the logged-on
user, or the bypassing of security restrictions. Depending on the
permission associated with the application running the exploit, an
attacker could then install programs; view, change, or delete data.

  IMPACT:
Multiple vulnerabilities have been discovered in Apple Products, the
most severe of which could allow for arbitrary code execution in the
context of the affected user. Details of these vulnerabilities are as
follows:

  * iOS 15.2 and iPadOS 15.2
  **  Audio
   ***  Parsing a maliciously crafted audio file may lead to disclosure
of user information. A buffer overflow issue was addressed with improved
memory handling. (CVE-2021-30960)
  **  CFNetwork Profiles
   ***  User traffic might unexpectedly be leaked to a proxy server
despite PAC configurations. A logic issue was addressed with improved
state management. (CVE-2021-30966)
  **  ColorSync
   ***  Processing a maliciously crafted image may lead to arbitrary
code execution. A memory corruption issue in the processing of ICC
profiles was addressed with improved input validation. (CVE-2021-30926,
CVE-2021-30942)
  **  CoreAudio
   ***  Processing a maliciously crafted audio file may lead to
arbitrary code execution. A buffer overflow issue was addressed with
improved memory handling. (CVE-2021-30957)
   ***  Playing a malicious audio file may lead to arbitrary code
execution. An out-of-bounds read was addressed with improved input
validation. (CVE-2021-30958)
  **  Crash Reporter
   ***  A local attacker may be able to elevate their privileges. This
issue was addressed with improved checks. (CVE-2021-30945)
  **  FaceTime
   ***  A user in a FaceTime call may unexpectedly leak sensitive user
information through Live Photos metadata. This issue was addressed with
improved handling of file metadata. (CVE-2021-30992)
  **  ImageIO
   ***  Processing a maliciously crafted image may lead to arbitrary
code execution. An out-of-bounds read was addressed with improved bounds
checking. (CVE-2021-30939)
  **  IOMobileFrameBuffer
   ***  A malicious application may be able to execute arbitrary code
with kernel privileges.
   ***  * A race condition was addressed with improved state handling.
(CVE-2021-30996)
   ***  * A buffer overflow issue was addressed with improved memory
handling. (CVE-2021-30983)
   ***  * An out-of-bounds write issue was addressed with improved
bounds checking. (CVE-2021-30985)
   ***  * An out-of-bounds read was addressed with improved bounds
checking. (CVE-2021-30991)
  **  Kernel
   ***  A malicious application may be able to execute arbitrary code
with kernel privileges.
   ***  * A use after free issue was addressed with improved memory
management. (CVE-2021-30937)
   ***  * A memory corruption issue was addressed with improved state
management. (CVE-2021-30949)
   ***  * A race condition was addressed with improved state handling.
(CVE-2021-30955)
   ***  An application may be able to execute arbitrary code with kernel
privileges. A use after free issue was addressed with improved memory
management. (CVE-2021-30927, CVE-2021-30980)
   ***  An attacker in a privileged network position may be able to
execute arbitrary code. A buffer overflow issue was addressed with
improved memory handling. (CVE-2021-30993)
  **  Model I/O
   ***  Processing a maliciously crafted USD file may lead to unexpected
application termination or arbitrary code execution.
   ***  * An out-of-bounds write issue was addressed with improved
bounds checking. (CVE-2021-30971)
   ***  * A buffer overflow issue was addressed with improved memory
handling. (CVE-2021-30979)
   ***  Processing a maliciously crafted file may disclose user
information. An out-of-bounds read was addressed with improved input
validation. (CVE-2021-30973)
   ***  Processing a maliciously crafted USD file may disclose memory
contents.
   ***  * An out-of-bounds write issue was addressed with improved
bounds checking. (CVE-2021-30929)
   ***  * A buffer overflow issue was addressed with improved memory
handling. (CVE-2021-30940, CVE-2021-30941)
  **  NetworkExtension
   ***  A local attacker may be able to read sensitive information. A
permissions issue was addressed with improved validation. (CVE-2021-30967)
   ***  A malicious application may be able to identify what other
applications a user has installed. A permissions issue was addressed
with improved validation. (CVE-2021-30988)
  **  Notes
   ***  A person with physical access to an iOS device may be able to
access contacts from the lock screen. The issue was addressed with
improved permissions logic. (CVE-2021-30932)
  **  Password Manager
   ***  A person with physical access to an iOS device may be able to
access stored passwords without authentication. An inconsistent user
interface issue was addressed with improved state management.
(CVE-2021-30948)
  **  Preferences
   ***  A malicious application may be able to elevate privileges. A
race condition was addressed with improved state handling. (CVE-2021-30995)
  **  Sandbox
   ***  A malicious application may be able to bypass certain Privacy
preferences.
   ***  * A validation issue related to hard link behavior was addressed
with improved sandbox restrictions. (CVE-2021-30968)
   ***  * A logic issue was addressed with improved restrictions.
(CVE-2021-30946)
   ***  An application may be able to access a user’s files. An access
issue was addressed with additional sandbox restrictions. (CVE-2021-30947)
  **  TCC
   ***  A local user may be able to modify protected parts of the file
system. A logic issue was addressed with improved state management.
(CVE-2021-30767)
   ***  A malicious application may be able to bypass Privacy
preferences. An inherited permissions issue was addressed with
additional restrictions. (CVE-2021-30964)
  **  WebKit
   ***  Processing maliciously crafted web content may lead to arbitrary
code execution.
   ***  * A buffer overflow issue was addressed with improved memory
handling. (CVE-2021-30934)
   ***  * A use after free issue was addressed with improved memory
management. (CVE-2021-30936, CVE-2021-30951)
   ***  * An integer overflow was addressed with improved input
validation. (CVE-2021-30952)
   ***  * A race condition was addressed with improved state handling.
(CVE-2021-30984)
   ***  * An out-of-bounds read was addressed with improved bounds
checking. (CVE-2021-30953)
   ***  * A type confusion issue was addressed with improved memory
handling. (CVE-2021-30954)

* macOS Monterey 12.1
  **  Airport
   ***  A device may be passively tracked via BSSIDs. An access issue
was addressed with improved access restrictions. (CVE-2021-30987)
  **  Archive Utility
   ***  A malicious application may bypass Gatekeeper checks. A logic
issue was addressed with improved state management. (CVE-2021-30950)
  **  Audio
   ***  Parsing a maliciously crafted audio file may lead to disclosure
of user information. A buffer overflow issue was addressed with improved
memory handling. (CVE-2021-30960)
  **  Bluetooth
   ***  A device may be passively tracked by its Bluetooth MAC address.
A device configuration issue was addressed with an updated
configuration. (CVE-2021-30986)
  **  CFNetwork Proxies
   ***  User traffic might unexpectedly be leaked to a proxy server
despite PAC configurations. A logic issue was addressed with improved
state management. (CVE-2021-30966)
  **  ColorSync
   ***  Processing a maliciously crafted image may lead to arbitrary
code execution. A memory corruption issue in the processing of ICC
profiles was addressed with improved input validation. (CVE-2021-30926,
CVE-2021-30942)
  **  CoreAudio
   ***  Processing a maliciously crafted audio file may lead to
arbitrary code execution. A buffer overflow issue was addressed with
improved memory handling. (CVE-2021-30957)
   ***  Playing a malicious audio file may lead to arbitrary code
execution. An out-of-bounds read was addressed with improved input
validation. (CVE-2021-30958)
  **  Crash Reporter
   ***  A local attacker may be able to elevate their privileges. This
issue was addressed with improved checks. (CVE-2021-30945)
  **  Graphics Divers
   ***  A malicious application may be able to execute arbitrary code
with kernel privileges. A buffer overflow was addressed with improved
bounds checking. (CVE-2021-30977)
  **  ImageIO
   ***  Processing a maliciously crafted image may lead to arbitrary
code execution. An out-of-bounds read was addressed with improved bounds
checking. (CVE-2021-30939)
  **  Intel Graphics Driver
   ***  An application may be able to execute arbitrary code with kernel
privileges. A buffer overflow was addressed with improved bounds
checking. (CVE-2021-30981)
  **  IOMobileFrameBuffer
   ***  A malicious application may be able to execute arbitrary code
with kernel privileges. A race condition was addressed with improved
state handling. (CVE-2021-30996)
  **  IOUSBHostFamily
   ***  A remote attacker may be able to cause unexpected application
termination or heap corruption. A race condition was addressed with
improved locking. (CVE-2021-30982)
  **  Kernel
   ***  A malicious application may be able to execute arbitrary code
with kernel privileges.
   ***  * A memory corruption vulnerability was addressed with improved
locking. (CVE-2021-30937)
   ***  * A memory corruption issue was addressed with improved state
management. (CVE-2021-30949)
   ***  * A race condition was addressed with improved state handling.
(CVE-2021-30955)
   ***  An application may be able to execute arbitrary code with kernel
privileges. A use after free issue was addressed with improved memory
management. (CVE-2021-30927, CVE-2021-30980)
   ***  An attacker in a privileged network position may be able to
execute arbitrary code. A buffer overflow issue was addressed with
improved memory handling. (CVE-2021-30993)
  **  LaunchServices
   ***  A malicious application may bypass Gatekeeper checks.
   ***  * A logic issue was addressed with improved state management.
(CVE-2021-30976)
   ***  * A logic issue was addressed with improved validation.
(CVE-2021-30990)
  **  Model I/O
   ***  Processing a maliciously crafted USD file may lead to unexpected
application termination or arbitrary code execution.
   ***  * An out-of-bounds write issue was addressed with improved
bounds checking. (CVE-2021-30971)
   ***  * A buffer overflow issue was addressed with improved memory
handling. (CVE-2021-30979)
   ***  Processing a maliciously crafted file may disclose user
information. An out-of-bounds read was addressed with improved input
validation. (CVE-2021-30973)
   ***  Processing a maliciously crafted USD file may disclose memory
contents.
   ***  * An out-of-bounds write issue was addressed with improved
bounds checking. (CVE-2021-30929)
   ***  * A buffer overflow issue was addressed with improved memory
handling. (CVE-2021-30940, CVE-2021-30941)
  **  Preferences
   ***  A malicious application may be able to elevate privileges. A
race condition was addressed with improved state handling. (CVE-2021-30995)
  **  Sandbox
   ***  A malicious application may be able to bypass certain Privacy
preferences.
   ***  * A validation issue related to hard link behavior was addressed
with improved sandbox restrictions. (CVE-2021-30968)
   ***  * A logic issue was addressed with improved restrictions.
(CVE-2021-30946)
   ***  An application may be able to access a user’s files. An access
issue was addressed with additional sandbox restrictions. (CVE-2021-30947)
  **  Script Editor
   ***  A malicious OSAX scripting addition may bypass Gatekeeper checks
and circumvent sandbox restrictions. This issue was addressed by
disabling execution of JavaScript when viewing a scripting dictionary.
(CVE-2021-30975)
  **  TCC
   ***  A local user may be able to modify protected parts of the file
system. A logic issue was addressed with improved state management.
(CVE-2021-30767)
   ***  A malicious application may be able to bypass Privacy preferences.
   ***  * An inherited permissions issue was addressed with additional
restrictions. (CVE-2021-30964)
   ***  * A logic issue was addressed with improved state management.
(CVE-2021-30970)
   ***  A malicious application may be able to cause a denial of service
to Endpoint Security clients. A logic issue was addressed with improved
state management. (CVE-2021-30965)
  **  WebKit
   ***  Processing maliciously crafted web content may lead to arbitrary
code execution.
   ***  * A buffer overflow issue was addressed with improved memory
handling. (CVE-2021-30934)
   ***  * A use after free issue was addressed with improved memory
management. (CVE-2021-30936, CVE-2021-30951)
   ***  * An integer overflow was addressed with improved input
validation. (CVE-2021-30952)
   ***  * A race condition was addressed with improved state handling.
(CVE-2021-30984)
   ***  * An out-of-bounds read was addressed with improved bounds
checking. (CVE-2021-30953)
   ***  * A type confusion issue was addressed with improved memory
handling. (CVE-2021-30954)
  **  Wi-Fi
   ***  A local user may be able to cause unexpected system termination
or read kernel memory. This issue was addressed with improved checks.
(CVE-2021-30938)

* macOS Big Sur 11.6.2 and 2021-008 Catalina
  **  Archive Utility
   ***  A malicious application may bypass Gatekeeper checks. A logic
issue was addressed with improved state management. (CVE-2021-30950)
  **  Bluetooth
   ***  A malicious application may be able to disclose kernel memory. A
logic issue was addressed with improved validation. (CVE-2021-30931)
   ***  An application may be able to execute arbitrary code with kernel
privileges. A logic issue was addressed with improved validation.
(CVE-2021-30935)
  **  ColorSync
   ***  Processing a maliciously crafted image may lead to arbitrary
code execution. A memory corruption issue in the processing of ICC
profiles was addressed with improved input validation. (CVE-2021-30942)
  **  CoreAudio
   ***  Playing a malicious audio file may lead to arbitrary code
execution. An out-of-bounds read was addressed with improved input
validation. (CVE-2021-30958)
   ***  Parsing a maliciously crafted audio file may lead to disclosure
of user information. A buffer overflow issue was addressed with improved
memory handling. (CVE-2021-30959, CVE-2021-30961, CVE-2021-30963)
  **  Crash Reporter
   ***  A local attacker may be able to elevate their privileges. This
issue was addressed with improved checks. (CVE-2021-30945)
  **  Graphics Drivers
   ***  A malicious application may be able to execute arbitrary code
with kernel privileges. A buffer overflow was addressed with improved
bounds checking. (CVE-2021-30977)
  **  Help Viewer
   ***  Processing a maliciously crafted URL may cause unexpected
JavaScript execution from a file on disk. A path handling issue was
addressed with improved validation. (CVE-2021-30969)
  **  ImageIO
   ***  Processing a maliciously crafted image may lead to arbitrary
code execution. An out-of-bounds read was addressed with improved bounds
checking. (CVE-2021-30939)
  **  Intel Graphics Driver
   ***  An application may be able to execute arbitrary code with kernel
privileges. A buffer overflow was addressed with improved bounds
checking. (CVE-2021-30981)
  **  IOUSBHostFamily
   ***  A remote attacker may be able to cause unexpected application
termination or heap corruption. A race condition was addressed with
improved locking. (CVE-2021-30982)
  **  Kernel
   ***  An application may be able to execute arbitrary code with kernel
privileges. A use after free issue was addressed with improved memory
management. (CVE-2021-30927, CVE-2021-30980)
   ***  A malicious application may be able to execute arbitrary code
with kernel privileges.
   ***  * A memory corruption vulnerability was addressed with improved
locking. (CVE-2021-30937)
   ***  * A memory corruption issue was addressed with improved state
management. (CVE-2021-30949)
  **  Launch Services
   ***  A malicious application may bypass Gatekeeper checks.
   ***  * A logic issue was addressed with improved validation.
(CVE-2021-30990)
   ***  * A logic issue was addressed with improved state management.
(CVE-2021-30976)
  **  Model I/O
   ***  Processing a maliciously crafted USD file may disclose memory
contents.
   ***  * An out-of-bounds write issue was addressed with improved
bounds checking. (CVE-2021-30929)
   ***  * A buffer overflow issue was addressed with improved memory
handling. (CVE-2021-30940, CVE-2021-30941)
   ***  Processing a maliciously crafted USD file may lead to unexpected
application termination or arbitrary code execution.
   ***  * A buffer overflow issue was addressed with improved memory
handling. (CVE-2021-30979)
   ***  * An out-of-bounds write issue was addressed with improved
bounds checking. (CVE-2021-30971)
   ***  Processing a maliciously crafted file may disclose user
information. An out-of-bounds read was addressed with improved input
validation. (CVE-2021-30973)
  **  Preferences
   ***  A malicious application may be able to elevate privileges. A
race condition was addressed with improved state handling. (CVE-2021-30995)
  **  Sandbox
   ***  A malicious application may be able to bypass certain Privacy
preferences. A validation issue related to hard link behavior was
addressed with improved sandbox restrictions. (CVE-2021-30968)
  **  Script Editor
   ***  A malicious OSAX scripting addition may bypass Gatekeeper checks
and circumvent sandbox restrictions. This issue was addressed by
disabling execution of JavaScript when viewing a scripting dictionary.
(CVE-2021-30975)
  **  TCC
   ***  A local user may be able to modify protected parts of the file
system. A logic issue was addressed with improved state management.
(CVE-2021-30767)
   ***  A malicious application may be able to cause a denial of service
to Endpoint Security clients. A logic issue was addressed with improved
state management. (CVE-2021-30965)
  **  Wi-Fi
   ***  A local user may be able to cause unexpected system termination
or read kernel memory. This issue was addressed with improved checks.
(CVE-2021-30938)

* WatchOS 8.3 and tvOS 15.2
** Audio
*** Parsing a maliciously crafted audio file may lead to disclosure of
user information. A buffer overflow issue was addressed with improved
memory handling. (CVE-2021-30960)
** CFNetwork Proxies
*** User traffic might unexpectedly be leaked to a proxy server despite
PAC configurations. A logic issue was addressed with improved state
management. (CVE-2021-30966)
  **  ColorSync
   ***  Processing a maliciously crafted image may lead to arbitrary
code execution. A memory corruption issue in the processing of ICC
profiles was addressed with improved input validation. (CVE-2021-30926,
CVE-2021-30942)
  **  CoreAudio
   ***  Processing a maliciously crafted audio file may lead to
arbitrary code execution. A buffer overflow issue was addressed with
improved memory handling. (CVE-2021-30957)
   ***  Playing a malicious audio file may lead to arbitrary code
execution. An out-of-bounds read was addressed with improved input
validation. (CVE-2021-30958)
  **  Crash Reporter
   ***  A local attacker may be able to elevate their privileges.
   ***  * This issue was addressed with improved checks. (CVE-2021-30945)
  **  ImageIO
   ***  Processing a maliciously crafted image may lead to arbitrary
code execution. An out-of-bounds read was addressed with improved bounds
checking. (CVE-2021-30939)
  **  Kernel
   ***  A malicious application may be able to execute arbitrary code
with kernel privileges.
   ***  * A memory corruption issue was addressed with improved memory
handling. (CVE-2021-30916)
   ***  * A memory corruption vulnerability was addressed with improved
locking. (CVE-2021-30937)
   ***  * A use after free issue was addressed with improved memory
management. (CVE-2021-30927, CVE-2021-30980)
   ***  * A memory corruption issue was addressed with improved state
management. (CVE-2021-30949)
   ***  An attacker in a privileged network position may be able to
execute arbitrary code. A buffer overflow issue was addressed with
improved memory handling. (CVE-2021-30993)
   ***  A malicious application may be able to execute arbitrary code
with kernel privileges. A race condition was addressed with improved
state handling. (CVE-2021-30955)
  **  Preferences
   ***  A malicious application may be able to elevate privileges. A
race condition was addressed with improved state handling. (CVE-2021-30995)
  **  Sandbox
   ***  A malicious application may be able to bypass certain Privacy
preferences.
   ***  * A validation issue related to hard link behavior was addressed
with improved sandbox restrictions. (CVE-2021-30968)
   ***  * A logic issue was addressed with improved restrictions.
(CVE-2021-30946)
   ***  An application may be able to access a user’s files. An access
issue was addressed with additional sandbox restrictions. (CVE-2021-30947)
  **  TCC
   ***  A local user may be able to modify protected parts of the file
system. A logic issue was addressed with improved state management.
(CVE-2021-30767)
   ***  A malicious application may be able to bypass Privacy
preferences. An inherited permissions issue was addressed with
additional restrictions. (CVE-2021-30964)
  **  WebKit
   ***  Processing maliciously crafted web content may lead to arbitrary
code execution.
   ***  * A buffer overflow issue was addressed with improved memory
handling. (CVE-2021-30934)
   ***  * A use after free issue was addressed with improved memory
management. (CVE-2021-30936, CVE-2021-30951)
   ***  * An integer overflow was addressed with improved input
validation. (CVE-2021-30952)
   ***  * A race condition was addressed with improved state handling.
(CVE-2021-30984)
   ***  * An out-of-bounds read was addressed with improved bounds
checking. (CVE-2021-30953)
   ***  * A type confusion issue was addressed with improved memory
handling. (CVE-2021-30954)

Successful exploitation of the most severe of these vulnerabilities
could result in arbitrary code execution within the context of the
application, an attacker gaining the same privileges as the logged-on
user, or the bypassing of security restrictions. Depending on the
permission associated with the application running the exploit, an
attacker could then install programs; view, change, or delete data.

SYSTEM AFFECTED:
* iOS and iPadOS prior to 15.2
* macOS Monterey prior to 12.1
* macOS Big Sur prior to 11.6.2
* macOS Catalina prior to security update 2021-008
* watchOS prior to 8.3
* tvOS prior to 15.2

RECOMMENDATIONS:
We recommend the following actions be taken:

* Apply appropriate patches provided by Apple to vulnerable systems
immediately after appropriate testing.
* Run all software as a nonprivileged user (one without administrative
privileges) to diminish the effects of a successful attack.
* Remind users not to download, accept or execute files from untrusted
and unknown sources.
* Remind users not to visit untrusted websites or follow links provided
by untrusted or unknown sources.
* Evaluate read, write, and execute permissions on all newly installed
software.
* Apply the Principle of Least Privilege to all systems and services.

REFERENCES:
https://support.apple.com/en-us/HT212981
https://support.apple.com/en-us/HT212980
https://support.apple.com/en-us/HT212979
https://support.apple.com/en-us/HT212978
https://support.apple.com/en-us/HT212976
https://support.apple.com/en-us/HT212975

Published: 4 January 2022, 12:32:30 BST