CVE-2023-5536

Description

A feature in LXD (LP#1829071), affects the default configuration of Ubuntu Server which allows privileged users in the lxd group to escalate their privilege to root without requiring a sudo password.

Remediation

Workaround:

  • Remove users from lxd group and configure multi-user LXD mode. https://discourse.ubuntu.com/t/easy-multi-user-lxd-setup/26215/4

Category

5.0
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.05%
Vendor Advisory launchpad.net Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com
Affected: Canonical Ubuntu Server
Published at:
Updated at:

References

Link Tags
https://discourse.ubuntu.com/t/easy-multi-user-lxd-setup/26215/4 mitigation vendor advisory
https://ubuntu.com/security/CVE-2023-5536 vendor advisory issue tracking
https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/1829071 vendor advisory issue tracking
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5536 third party advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2023-5536?
CVE-2023-5536 has been scored as a medium severity vulnerability.
How to fix CVE-2023-5536?
As a workaround for remediating CVE-2023-5536: Remove users from lxd group and configure multi-user LXD mode. https://discourse.ubuntu.com/t/easy-multi-user-lxd-setup/26215/4
Is CVE-2023-5536 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-5536 is being actively exploited. 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-2023-5536?
CVE-2023-5536 affects Canonical Ubuntu Server.
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