A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A local attacker may be able to elevate their privileges.

The remote host is running a version of macOS / Mac OS X that is 10.14.x prior to 10.14.6 Security Update 2021-003 Mojave It is, therefore, affected by multiple vulnerabilities, including the following:

  - An application may be able to execute arbitrary code with system privileges due to insufficient permission     checks (CVE-2020-3838).

  - A memory corruption vulnerability could allow an application read access to restricted memory (CVE-2021-1808).

  - A memory corruption vulnerability could allow an application to cause unexpected system termination or to     write kernel memory (CVE-2021-1828).

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

The remote host is running a version of macOS / Mac OS X that is 10.15.x prior to 10.15.7 Security Update 2021-002 Catalina It is, therefore, affected by multiple vulnerabilities, including the following:

  - An application may be able to execute arbitrary code with system privileges due to insufficient permission     checks (CVE-2020-3838).

  - A memory corruption vulnerability could allow an application read access to restricted memory (CVE-2021-1808).

  - A memory corruption vulnerability could allow an application to cause unexpected system termination or to     write kernel memory (CVE-2021-1828).

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

The remote host is running a version of macOS / Mac OS X that is 11.x prior to 11.3 Big Sur. It is, therefore, affected by multiple vulnerabilities including the following:

  - A memory corruption issue which could allow an application restricted memory read access (CVE-2021-1808).

  - A memory corruption issue which could allow an application to cause unexpected system termination or to     write kernel memory (CVE-2021-1828).

  - An out-of-bounds wirte issue which could allow a malicious application to execute arbitrary code with     kernel privileges (CVE-2021-1834).

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

ID	Name	Product	Family	Severity
149043	macOS 10.14.x < 10.14.6 Security Update 2021-003 Mojave (HT212327)	Nessus	MacOS X Local Security Checks	critical
149042	macOS 10.15.x < 10.15.7 Security Update 2021-002 Catalina (HT212326)	Nessus	MacOS X Local Security Checks	critical
149041	macOS 11.x < 11.3 (HT212325)	Nessus	MacOS X Local Security Checks	critical

Detections

Analytics

CVE-2021-1840

high

Tenable Plugins

critical

critical

critical