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CVE-2019-8656

5.5 · MEDIUM

This was addressed with additional checks by Gatekeeper on files mounted through a network share.

Published Oct 27, 2020EPSS 1.49%

Overview

CVE-2019-8656 is a medium-severity vulnerability. It was published on October 27, 2020 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

This was addressed with additional checks by Gatekeeper on files mounted through a network share. This issue is fixed in macOS Mojave 10.14.6, Security Update 2019-004 High Sierra, Security Update 2019-004 Sierra. Extracting a zip file containing a symbolic link to an endpoint in an NFS mount that is attacker controlled may bypass Gatekeeper.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refsupport.apple.com/en-us/HT210348Refsupport.apple.com/en-us/HT210348

How CyberStrike helps

Frequently asked questions

What is CVE-2019-8656?

CVE-2019-8656 is a medium-severity vulnerability. It was published on October 27, 2020 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2019-8656?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-8656?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-8656?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-8656 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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