Kyverno 1.19.1の脆弱性で管理者権限に昇格、修正版あり
Summary
Kyverno 1.19.1に、自分のnamespaceにPolicyを作れる利用者がクラスター管理者権限まで到達できる脆弱性があります。1.19.1を使う組織は1.19.2へ更新し、不審なwebhook設定がないかも調べてください。
AI summary
Produced by SecPulse using an external AI model; it may contain mistakes. Check the original description and references below before acting on it.
Kyverno 1.19.1に、自分のnamespaceにPolicyを作れる利用者がクラスター管理者権限まで到達できる脆弱性があります。1.19.1を使う組織は1.19.2へ更新し、不審なwebhook設定がないかも調べてください。
Affected packages
| Package | Affected → Fixed | |
|---|---|---|
| kyvernokyverno |
≥ 1.19.1, < 1.19.2→ 1.19.2 |
1.19.2 |
Original description The description as published by the source.
Kyverno from 1.19.1 before 1.19.2 contains an authorization bypass vulnerability in the apiCall namespace clamp that allows namespace tenants to issue cross-namespace and cluster-scoped API requests by appending malformed percent-escapes to urlPath. Attackers can create namespaced Policies whose apiCall runs as the admission-controller ServiceAccount to read other namespaces' resources and create mutating webhooks, escalating to cluster admin.
Source: CVE.org (CVE Program・cvelistV5) NVD GitHub Advisory
References
- advisory github.com
- advisory vulncheck.com
- advisory nvd.nist.gov
- advisory github.com
- web github.com