Authorization Flaw in github.com/cilium/cilium (CVE-2025-30163)
Summary
vulnerability in github.com/cilium/cilium (CVE-2025-30163). Risk of unauthorized operations or information disclosure. Exploitable via ``fromNodes``. Mitigation: upgrade to `1.17.2` or later.
AI summary snake-internal / snake-material-v2
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'github.com/cilium/cilium' . | 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 `github.com/cilium/cilium` を grep し、稼働しているサービス・バージョンを把握する。
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5Apply temporary workaround mitigate
Users can work around this issue by ensuring that the labels used in `fromNodes` and `toNodes` fields are used exclusively by nodes and not by other endpoints.パッチが適用されるまでの応急処置として、Users can work around this issue by ensuring that the labels used in `fromNodes` and `toNodes` fields are used exclusively by nodes and not by other endpoints. を実施。回避策の副作用 (機能低下) を確認した上で。
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6Apply patch patch
Upgrade github.com/cilium/cilium to 1.17.2ステージング環境で 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と、Step 3 で見つけた異常検知の続報チェックを含めること。
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7Post-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 Step 3 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2025-30163
- package https://github.com/cilium/cilium
- web https://github.com/cilium/cilium/security/advisories/GHSA-c6pf-2v8j-96mc
- web https://github.com/cilium/cilium/pull/36657
- web https://docs.cilium.io/en/stable/security/policy/language/#node-based
- web https://github.com/advisories/GHSA-c6pf-2v8j-96mc