{"id":"GHSA-hq4m-4948-64cc","summary":"Kyverno resource with a deletionTimestamp may allow policy circumvention","details":"### Impact\n\nIn versions of Kyverno prior to 1.10.0, resources which have the `deletionTimestamp` field defined can bypass validate, generate, or mutate-existing policies, even in cases where the `validationFailureAction` field is set to `Enforce`. \n\nThis situation occurs as resources pending deletion were being consciously exempted by Kyverno, as a way to reduce processing load as policies are typically not applied to objects which are being deleted. \n\nHowever, this could potentially result in allowing a malicious user to leverage the [Kubernetes finalizers feature](https://kubernetes.io/docs/concepts/overview/working-with-objects/finalizers/) by setting a finalizer which causes the Kubernetes API server to set the `deletionTimestamp` and then not completing the delete operation as a way to explicitly to bypass a Kyverno policy. \n\nNote that this is not applicable to Kubernetes Pods but, as an example, a Kubernetes Service resource can be manipulated using an indefinite finalizer to bypass policies.\n\n\n### Patches\nThis is resolved in Kyverno 1.10.0.\n\n### Workarounds\nThere is no known workaround.\n\n### References\n_Are there any links users can visit to find out more?_\n","aliases":["CVE-2023-34091","GO-2023-1819"],"modified":"2026-07-17T21:15:08.043344530Z","published":"2023-06-05T17:10:13Z","database_specific":{"nvd_published_at":"2023-06-01T17:15:10Z","cwe_ids":["CWE-285"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2023-06-05T17:10:13Z"},"references":[{"type":"WEB","url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-hq4m-4948-64cc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34091"},{"type":"PACKAGE","url":"https://github.com/kyverno/kyverno"},{"type":"WEB","url":"https://github.com/kyverno/kyverno/releases/tag/v1.10.0"}],"affected":[{"package":{"name":"github.com/kyverno/kyverno","ecosystem":"Go","purl":"pkg:golang/github.com/kyverno/kyverno"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.10.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/06/GHSA-hq4m-4948-64cc/GHSA-hq4m-4948-64cc.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"}]}