{"cve":"CVE-2024-43803","nvd":{"published":"2024-09-03T19:15:14.800","modified":"2026-06-17T07:51:44.600","status":"Deferred","description":"The Bare Metal Operator (BMO) implements a Kubernetes API for managing bare metal hosts in Metal3. The `BareMetalHost` (BMH) CRD allows the `userData`, `metaData`, and `networkData` for the provisioned host to be specified as links to Kubernetes Secrets. There are fields for both the `Name` and `Namespace` of the Secret, meaning that versions of the baremetal-operator prior to 0.8.0, 0.6.2, and 0.5.2 will read a `Secret` from any namespace. A user with access to create or edit a `BareMetalHost` can thus exfiltrate a `Secret` from another namespace by using it as e.g. the `userData` for provisioning some host (note that this need not be a real host, it could be a VM somewhere).\n\nBMO will only read a key with the name `value` (or `userData`, `metaData`, or `networkData`), so that limits the exposure somewhat. `value` is probably a pretty common key though. Secrets used by _other_ `BareMetalHost`s in different namespaces are always vulnerable. It is probably relatively unusual for anyone other than cluster administrators to have RBAC access to create/edit a `BareMetalHost`. This vulnerability is only meaningful, if the cluster has users other than administrators and users' privileges are limited to their respective namespaces.\n\nThe patch prevents BMO from accepting links to Secrets from other namespaces as BMH input. Any BMH configuration is only read from the same namespace only. The problem is patched in BMO releases v0.7.0, v0.6.2 and v0.5.2 and users should upgrade to those versions. Prior upgrading, duplicate the BMC Secrets to the namespace where the corresponding BMH is. After upgrade, remove the old Secrets. As a workaround, an operator can configure BMO RBAC to be namespace scoped for Secrets, instead of cluster scoped, to prevent BMO from accessing Secrets from other namespaces.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","score":4.9},"cwes":["CWE-200","CWE-653"],"references":["https://github.com/metal3-io/baremetal-operator/commit/3af4882e9c5fadc1a7550f53daea21dccd271f74","https://github.com/metal3-io/baremetal-operator/commit/bedae7b997d16f36e772806681569bb8eb4dadbb","https://github.com/metal3-io/baremetal-operator/commit/c2b5a557641bc273367635124047d6c958aa15f7","https://github.com/metal3-io/baremetal-operator/pull/1929","https://github.com/metal3-io/baremetal-operator/pull/1930"],"products":[],"source":"nvd","synced_at":"2026-10-19T21:54:16.205165117+00:00"},"epss":{"cve":"CVE-2024-43803","score":0.00574,"percentile":0.47385,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-pqfh-xh7w-7h3p","url":"https://osv.dev/vulnerability/GHSA-pqfh-xh7w-7h3p","summary":"The Bare Metal Operator (BMO) can expose particularly named secrets from other namespaces via BMH CRD","modified":"2024-12-20T21:13:23.260261Z","packages":[{"ecosystem":"Go","name":"github.com/metal3-io/baremetal-operator","purl":"pkg:golang/github.com/metal3-io/baremetal-operator","ranges":[">=0.7.0-rc.0 <0.8.0"],"fixed":["0.8.0"]},{"ecosystem":"Go","name":"github.com/metal3-io/baremetal-operator","purl":"pkg:golang/github.com/metal3-io/baremetal-operator","ranges":[">=0.6.0 <0.6.2"],"fixed":["0.6.2"]},{"ecosystem":"Go","name":"github.com/metal3-io/baremetal-operator","purl":"pkg:golang/github.com/metal3-io/baremetal-operator","ranges":["<0.5.2"],"fixed":["0.5.2"]}]},{"id":"GO-2024-3109","url":"https://osv.dev/vulnerability/GO-2024-3109","summary":"The Bare Metal Operator (BMO) can expose particularly named secrets from other namespaces via BMH CRD in github.com/metal3-io/baremetal-operator","modified":"2026-03-03T04:52:02.205791Z","packages":[{"ecosystem":"Go","name":"github.com/metal3-io/baremetal-operator","purl":"pkg:golang/github.com/metal3-io/baremetal-operator","ranges":["<0.5.2",">=0.6.0 <0.6.2",">=0.7.0-rc.0 <0.8.0"],"fixed":["0.5.2","0.6.2","0.8.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}