20201215 APPLE-SA-2020-12-14-4 Additional information for APPLE-SA-2020-11-13-1 macOS Big Sur 11.0.1

https://support.apple.com/en-us/HT211928

https://support.apple.com/en-us/HT211929

https://support.apple.com/en-us/HT211930

https://support.apple.com/en-us/HT211931

According to its banner, the version of Apple TV on the remote device is prior to 14.2. It is, therefore, affected by multiple vulnerabilities as described in the HT211930 advisory:

  - A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 14.2 and iPadOS     14.2, tvOS 14.2, watchOS 7.1. A malicious application may be able to execute arbitrary code with system privileges.
    (CVE-2020-27905)

  - An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1,     iOS 14.2 and iPadOS 14.2, tvOS 14.2, watchOS 7.1. Processing a maliciously crafted audio file may lead to arbitrary     code execution. (CVE-2020-27910)

  - An integer overflow was addressed through improved input validation. This issue is fixed in macOS Big Sur 11.0.1,     watchOS 7.1, iOS 14.2 and iPadOS 14.2, iCloud for Windows 11.5, tvOS 14.2, iTunes 12.11 for Windows. A remote     attacker may be able to cause unexpected application termination or arbitrary code execution. (CVE-2020-27911)

The remote host is running a version of macOS / Mac OS X that is 11.0.x prior to 11.0.1. It is, therefore, affected by multiple vulnerabilities, including the following:

  - An out-of-bounds write issue that can lead to unexpected application termination or arbitrary code     execution when opening a maliciously crafted PDF file. (CVE-2020-9876)

  - An out-of-bounds write caused by insufficient input validation that can lead to arbitrary code execution     when processing a maliciously crafted image. (CVE-2020-9883)

  - A remote attacker may be able to unexpectedly alter the Mail application date due to insufficient checks.
    (CVE-2020-9941)

Note that Nessus has not tested for this issue but has instead relied only on the operating system's self-reported version number.

The version of Apple iOS running on the mobile device is prior to 14.2. It is, therefore, affected by multiple vulnerabilities.

ID	Name	Product	Family	Severity
146215	Apple TV < 14.2 Multiple Vulnerabilities	Nessus	Misc.	high
143115	macOS 11.0.x < 11.0.1	Nessus	MacOS X Local Security Checks	high
142881	Apple iOS < 14.2 Multiple Vulnerabilities	Nessus	Mobile Devices	high

CVE-2020-27927

high

Tenable Plugins

high

high

high