CVE-2018-1002102 Kubernetes API server follows unvalidated redirects from streaming Kubelet endpoints

What is CVE-2018-1002102?

CVE-2018-1002102 is a low-severity server-side request forgery vulnerability in Fedoraproject Fedora, published on 5 Dec 2019. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.

Weakness: CWE-601

Which versions are affected by CVE-2018-1002102?

It affects 2 products.

Products include Fedoraproject Fedora, Kubernetes Kubernetes.

How do I fix CVE-2018-1002102?

Upgrade to a fixed version.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2018-1002102 being exploited?

There is no known exploitation of CVE-2018-1002102 in the wild and no public exploit code.

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All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• How this page is made

Also known as DEBIAN-CVE-2018-1002102.