CVE-2023-6476

Cri-o: pods are able to break out of resource confinement on cgroupv2

Description

A flaw was found in CRI-O that involves an experimental annotation leading to a container being unconfined. This may allow a pod to specify and get any amount of memory/cpu, circumventing the kubernetes scheduler and potentially resulting in a denial of service in the node.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.17%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: Red Hat Red Hat OpenShift Container Platform 4.13
Affected: Red Hat Red Hat OpenShift Container Platform 4.14
Affected: Red Hat Red Hat OpenShift Container Platform 3.11
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2024:0195 vendor advisory
https://access.redhat.com/errata/RHSA-2024:0207 vendor advisory
https://access.redhat.com/security/cve/CVE-2023-6476 vdb entry vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2253994 vendor advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2023-6476?
CVE-2023-6476 has been scored as a medium severity vulnerability.
How to fix CVE-2023-6476?
To fix CVE-2023-6476, 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-2023-6476 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-6476 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-2023-6476?
CVE-2023-6476 affects Red Hat Red Hat OpenShift Container Platform 4.13, Red Hat Red Hat OpenShift Container Platform 4.14, Red Hat Red Hat OpenShift Container Platform 3.11.
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