CVE-2018-6559

Public Exploit

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.

Category

3.3
CVSS
Severity: Low
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com
Affected: Canonical Ltd. Linux kernel, as used in Ubuntu 18.04 LTS and Ubuntu 18.10
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/105752 third party advisory vdb entry
https://usn.ubuntu.com/3836-2/ third party advisory vendor advisory
https://usn.ubuntu.com/3835-1/ third party advisory vendor advisory
https://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-6559.html third party advisory
https://lists.ubuntu.com/archives/kernel-team/2018-October/096172.html third party advisory
https://usn.ubuntu.com/3833-1/ third party advisory vendor advisory
https://usn.ubuntu.com/3832-1/ third party advisory vendor advisory
https://launchpad.net/bugs/1793458 third party advisory issue tracking exploit
https://usn.ubuntu.com/3836-1/ third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-6559?
CVE-2018-6559 has been scored as a low severity vulnerability.
How to fix CVE-2018-6559?
To fix CVE-2018-6559, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-6559 being actively exploited in the wild?
It is possible that CVE-2018-6559 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-6559?
CVE-2018-6559 affects Canonical Ltd. Linux kernel, as used in Ubuntu 18.04 LTS and Ubuntu 18.10.
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