CVE-2018-18653

Public Exploit

Description

The Linux kernel, as used in Ubuntu 18.10 and when booted with UEFI Secure Boot enabled, allows privileged local users to bypass intended Secure Boot restrictions and execute untrusted code by loading arbitrary kernel modules. This occurs because a modified kernel/module.c, in conjunction with certain configuration options, leads to mishandling of the result of signature verification.

Category

7.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.02%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory launchpad.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://launchpad.net/bugs/1798863 vendor advisory issue tracking exploit
https://usn.ubuntu.com/3835-1/ patch vendor advisory
https://usn.ubuntu.com/3832-1/ patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-18653?
CVE-2018-18653 has been scored as a high severity vulnerability.
How to fix CVE-2018-18653?
To fix CVE-2018-18653, 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-2018-18653 being actively exploited in the wild?
It is possible that CVE-2018-18653 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.
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