This issue was addressed with improved checks. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, Security Update 2021-005 Catalina, tvOS 15, iOS 15 and iPadOS 15, watchOS 8. Processing a maliciously crafted dfont file may lead to arbitrary code execution.

The version of Apple iOS running on the mobile device is prior to 15. It is, therefore, affected by multiple vulnerabilities.

The version of Apple iOS running on the mobile device is prior to 14.8. It is, therefore, affected by multiple vulnerabilities.

The remote host is running a version of macOS / Mac OS X that is prior to Catalina Security Update 2021-005. It is, therefore, affected by multiple vulnerabilities, including the following:

  - Arbitrary code execution when processing a maliciously crafted image. (CVE-2021-30835, CVE-2021-30847)

  - An integer overflow issue due to insufficient input validation, which can lead to arbitrary code     execution by an unauthenticated attacker when processing a maliciously crafted PDF. (CVE-2021-30860)

  - Arbitrary code execution when processing a maliciously crafted dfont file. (CVE-2021-30841,     CVE-2021-30842, CVE-2021-30843)

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 11.6 Big Sur. It is, therefore, affected by multiple vulnerabilities including the following:

  - A use after free issue was addressed with improved memory management. Exploitation of this vulnerability may lead to     arbitrary code execution. (CVE-2021-30858)

  - An integer overflow was addressed with improved input validation. Exploitation of this vulnerability may lead to     arbitrary code execution. (CVE-2021-30860)

  - Insufficient checks when processing maliciously crafted dfont files may lead to arbitrary code     execution. (CVE-2021-30841, CVE-2021-30842, CVE-2021-30843)

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
153507	Apple iOS < 15 Multiple Vulnerabilities (HT212814)	Nessus	Mobile Devices	critical
153434	Apple iOS < 14.8 Multiple Vulnerabilities (HT212807)	Nessus	Mobile Devices	critical
153432	macOS 10.15.x < Catalina Security Update 2021-005 Catalina (HT212805)	Nessus	MacOS X Local Security Checks	high
153429	macOS 11.x < 11.6 (HT212804)	Nessus	MacOS X Local Security Checks	high

Detections

Analytics

CVE-2021-30841

high

Tenable Plugins

critical

critical

high

high