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CVE-2020-8551

Vulnerability in k8s.io/kubernetes (CVE-2020-8551)

Summary

Vulnerability in k8s.io/kubernetes (CVE-2020-8551). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 1.15.10, 1.16.6, 1.17.2 or later.

Original description

The description as published by the source.

The Kubelet component in versions 1.15.0-1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via the kubelet API, including the unauthenticated HTTP read-only API typically served on port 10255, and the authenticated HTTPS API typically served on port 10250.

Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2020-8551 has been found in k8s.io/kubernetes.
Risk of unauthorized operations or information disclosure.
What to do: upgrade k8s.io/kubernetes to 1.15.10, 1.16.6, 1.17.2 or later.
If unsure, ask your IT team or search "k8s.io/kubernetes CVE-2020-8551" on the vendor's site.

CVE-2020-8551 (k8s.io/kubernetes) — CWE-770
Attack vector: adjacent-network / unauthenticated / no user interaction
Patched: 1.15.10, 1.16.6, 1.17.2 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (CWE-770) exists in k8s.io/kubernetes.

📍 Affected scope

Check the vendor advisory for the affected versions of k8s.io/kubernetes.

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 1.15.10, 1.16.6, 1.17.2.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'k8s.io/kubernetes' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'k8s.io/kubernetes' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で k8s.io/kubernetes を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade k8s.io/kubernetes to 1.15.10, 1.16.6, 1.17.2

    ステージング環境で 1.15.10, 1.16.6, 1.17.2 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

Go k8s.io/kubernetes
[{"type":"SEMVER","events":[{"introduced":"1.15.0"},{"fixed":"1.15.10"},{"introduced":"1.16.0"},{"fixed":"1.16.6"},{"introduced":"1.17.0"},{"fixed":"1.17.2"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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