CVE-2026-10101

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{"affected": [{"affectedData": [{"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:multicluster_engine"], "defaultStatus": "affected", "packageName": "multicluster-engine/assisted-service-9-rhel9", "product": "Multicluster Engine for Kubernetes", "vendor": "Red Hat"}], "source": "secalert@redhat.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "ACM/MCE assisted-service writes raw referenced pull-secret contents into `InfraEnv.status.conditions[].message` when pull-secret validation fails. A namespace principal with the stock `view` ClusterRole cannot directly read Secrets, but can read `InfraEnv` objects and recover the referenced Secret's `.dockerconfigjson` data from status.\n\nThis bypasses the Kubernetes/OpenShift RBAC separation between read-only namespace viewers and Secret readers. In the reproduced proof, the same ServiceAccount was denied `get` and `list` on Secrets, but recovered synthetic pull-secret `username`, `password`, `email`, and base64 `auth` fields through `InfraEnv.status`."}, {"lang": "es", "value": "El servicio asistido por ACM/MCE escribe los contenidos brutos del pull-secret referenciado en InfraEnv.status.conditions[].message cuando falla la validaci\u00f3n del pull-secret. Un principal de espacio de nombres con el ClusterRole view predeterminado no puede leer directamente Secrets, pero puede leer objetos InfraEnv y recuperar los datos .dockerconfigjson del Secret referenciado desde el estado. Esto elude la separaci\u00f3n RBAC de Kubernetes/OpenShift entre los visores de espacio de nombres de solo lectura y los lectores de Secrets. En la prueba reproducida, a la misma ServiceAccount se le deneg\u00f3 get y list en Secrets, pero recuper\u00f3 los campos sint\u00e9ticos del pull-secret username, password, email y auth en base64 a trav\u00e9s de InfraEnv.status."}], "id": "CVE-2026-10101", "lastModified": "2026-07-21T15:10:00.103", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 4.2, "source": "secalert@redhat.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-10101", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-29T19:31:16.875090Z", "version": "2.0.3"}}]}, "published": "2026-05-29T16:16:24.483", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-10101"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483298"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-201"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"bugzilla": {"description": "assisted-service: assisted-service: InfraEnv status leaks referenced pull-secret contents to namespace view users", "id": "2483298", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483298"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N", "status": "draft"}, "cwe": "CWE-201", "details": ["ACM/MCE assisted-service writes raw referenced pull-secret contents into `InfraEnv.status.conditions[].message` when pull-secret validation fails. A namespace principal with the stock `view` ClusterRole cannot directly read Secrets, but can read `InfraEnv` objects and recover the referenced Secret's `.dockerconfigjson` data from status.\nThis bypasses the Kubernetes/OpenShift RBAC separation between read-only namespace viewers and Secret readers. In the reproduced proof, the same ServiceAccount was denied `get` and `list` on Secrets, but recovered synthetic pull-secret `username`, `password`, `email`, and base64 `auth` fields through `InfraEnv.status`."], "name": "CVE-2026-10101", "package_state": [{"cpe": "cpe:/a:redhat:multicluster_engine", "fix_state": "Under investigation", "package_name": "multicluster-engine/assisted-service-9-rhel9", "product_name": "Multicluster Engine for Kubernetes"}], "public_date": "2026-05-29T12:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-10101\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-10101"], "statement": "Red Hat rates this flaw as Moderate impact. Exploitation requires a namespace \"view\" user to be in a namespace where an InfraEnv references a pull secret that fails assisted-service validation -- a condition the \"view\" user cannot trigger themselves. Red Hat scores UI:R (User Interaction Required) because the leak only exists when an administrator creates or updates an InfraEnv referencing a pull secret that fails validation; without that admin action, there is nothing to exploit. The direct impact is confidentiality: the full pull-secret content is disclosed through InfraEnv status, bypassing the Kubernetes RBAC boundary that prevents \"view\" users from reading Secrets. Red Hat scores I:L (Integrity: Low) rather than I:H because, with Scope: Unchanged, integrity impact should reflect the vulnerable component (MCE/ACM), not external registries. The leaked credential's write capability is conditional on the specific credential's permissions and does not represent integrity compromise of the ACM/MCE cluster itself.\nThe reporter agreed with the new CVSS score.", "threat_severity": "Moderate"}

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