CVE-2023-2431 Bypass of seccomp profile enforcement
Attackers can bypass seccomp profile enforcement in Kubernetes Kubelet by using an empty localhost profile, allowing pods to run unconfined.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-2431?
CVE-2023-2431 is a low-severity vulnerability in Fedoraproject Fedora, published on 16 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A security issue was discovered in Kubelet that allows pods to bypass the seccomp profile enforcement. Pods that use localhost type for seccomp profile but specify an empty profile field, are affected by this issue. In this scenario, this vulnerability allows the pod to run in unconfined (seccomp disabled) mode. This bug affects Kubelet.
Weakness: CWE-1287
Which versions are affected by CVE-2023-2431?
9 open source packages ship an affected version, including k8s.io/kubernetes. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
k8s.io/kubernetes Go | All versions | 1.24.14, 1.25.10, 1.26.5, 1.27.2 |
k8s.io/kubernetes Go | All versions | 1.24.14 |
k8s.io/kubernetes Go | All versions | 1.24.14 |
k8s.io/kubernetes Go | From 1.25.0 | 1.25.10 |
k8s.io/kubernetes Go | From 1.25.0 | 1.25.10 |
k8s.io/kubernetes Go | From 1.26.0 | 1.26.5 |
3 more packages
k8s.io/kubernetes Go | From 1.26.0 | 1.26.5 |
k8s.io/kubernetes Go | From 1.27.0 | 1.27.2 |
k8s.io/kubernetes Go | From 1.27.0 | 1.27.2 |
Linux distribution packages (3)
kubernetes1.23 SUSE:Linux Enterprise Module for Containers 15 SP5 | All versions | 1.23.17-150500.3.6.1 |
kubernetes1.23 openSUSE:Leap 15.5 | All versions | 1.23.17-150500.3.6.1 |
kubernetes1.23 openSUSE:Tumbleweed | All versions | 1.23.17-5.1 |
Products include Fedoraproject Fedora, Kubernetes Kubernetes.
How do I fix CVE-2023-2431?
Upgrade k8s.io/kubernetes to a fixed version for your release line: 1.24.14, 1.25.10, 1.26.5 or 1.27.2.
Is CVE-2023-2431 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-2431 exists.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as DEBIAN-CVE-2023-2431, GHSA-xc8m-28vv-4pjc, GO-2023-1864, SUSE-SU-2023:2691-1, openSUSE-SU-2024:13013-1.