macOS 3rd Party Certificate Vulnerability

An vulnerability in the way certain third-party macOS developers interpret a popular code signing API could allow any applications to appears as certified.

Threat ID:: CC-2492
Category:: Exploit
Threat Severity:: Low
Threat Vector:
Published:: 14 June 2018 12:00 AM

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Summary

An vulnerability in the way certain third-party macOS developers interpret a popular code signing API could allow any applications to appears as certified.

Affected platforms

The following platforms are known to be affected:

macOS

Apple macOS - All versions
Apple OS X - All versions

Threat details

Fat, or Universal, files are used to contain several Mach-O executable files. Products from the affected vendors will check if the first Mach-O file is signed by Apple (or another trusted party) before running all Mach-O files. This means that that any unsigned files contained within the Fat file will be executed, provided the first file is signed.

An attacker may exploit this to bypass regular security protections, which can prevent unsigned files from running.

For further information