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CVE-2018-6559

3.3 · LOW

The Linux kernel, as used in Ubuntu 18.04 LTS and Ubuntu 18.10, allows local users to obtain names of files in which they would not normally be able to access via an overlayfs mount inside of a use…

Published Oct 26, 2018CWE-200EPSS 0.53%

Overview

CVE-2018-6559 is a low-severity vulnerability. It was published on October 26, 2018 and has a CVSS 3.0 base score of 3.3 (LOW).

This vulnerability has a CVSS 3.0 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

The Linux kernel, as used in Ubuntu 18.04 LTS and Ubuntu 18.10, allows local users to obtain names of files in which they would not normally be able to access via an overlayfs mount inside of a user namespace.

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

Refwww.securityfocus.com/bid/105752Reflaunchpad.net/bugs/1793458Reflists.ubuntu.com/archives/kernel-team/2018-October/096172.htmlRefpeople.canonical.com/~ubuntu-security/cve/2018/CVE-2018-6559.htmlRefusn.ubuntu.com/3832-1/Refusn.ubuntu.com/3833-1/Refusn.ubuntu.com/3835-1/Refusn.ubuntu.com/3836-1/Refusn.ubuntu.com/3836-2/Refwww.securityfocus.com/bid/105752

How CyberStrike helps

Frequently asked questions

What is CVE-2018-6559?

CVE-2018-6559 is a low-severity vulnerability. It was published on October 26, 2018 and has a CVSS 3.0 base score of 3.3 (LOW).

How severe is CVE-2018-6559?

This vulnerability has a CVSS 3.0 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2018-6559?

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-2018-6559?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-6559 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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