CVE-2023-1943 Privilege Escalation in kOps using GCE/GCP Provider in Gossip Mode
High 8.0
Published
Updated
Check this codebase for CVE-2023-1943 and fix it if it is affected.
What it is: CVE-2023-1943 is a high-severity vulnerability in Kubernetes kops, published on 11 Oct 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-1943 in the wild and no public exploit code.
Affected packages and fixed versions:
- k8s.io/kops (Go): affected all versions; fixed in 1.25.4, 1.26.2
- k8s.io/kops (Go): affected all versions; fixed in 1.25.4
- k8s.io/kops (Go): affected all versions; fixed in 1.25.4
- k8s.io/kops (Go): affected from 1.26.0; fixed in 1.26.2
- k8s.io/kops (Go): affected from 1.26.0; fixed in 1.26.2
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2023-1943/ (Markdown: https://insights.sbomify.com/CVE-2023-1943/index.md)
Attackers can escalate privileges in kOps clusters using GCE/GCP provider when configured in Gossip mode.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-1943?
CVE-2023-1943 is a high-severity vulnerability in Kubernetes kops, published on 11 Oct 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Privilege Escalation in kOps using GCE/GCP Provider in Gossip Mode.
Weakness: CWE-250
Which versions are affected by CVE-2023-1943?
5 open source packages ship an affected version, including k8s.io/kops. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
k8s.io/kops Go | All versions | 1.25.4, 1.26.2 |
k8s.io/kops Go | All versions | 1.25.4 |
k8s.io/kops Go | All versions | 1.25.4 |
k8s.io/kops Go | From 1.26.0 | 1.26.2 |
k8s.io/kops Go | From 1.26.0 | 1.26.2 |
Products include Kubernetes Operations.
How do I fix CVE-2023-1943?
Upgrade k8s.io/kops to a fixed version for your release line: 1.25.4 or 1.26.2.
Is CVE-2023-1943 being exploited?
There is no known exploitation of CVE-2023-1943 in the wild and no public exploit code.
Sources
Also known as GHSA-8gwj-m6vh-2g6j, GO-2023-2125.