2 lines
12 KiB
JSON
2 lines
12 KiB
JSON
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Improper validation of Kubernetes client certificate renewal allows a managed cluster administrator to forge a client certificate that can be approved by the OCM controller. This enables cross-cluster privilege escalation and may allow an attacker to gain control over other managed clusters, including the hub cluster."},{"lang":"es","value":"Se encontró una vulnerabilidad en Open Cluster Management (OCM), la tecnología subyacente a Red Hat Advanced Cluster Management (ACM). Una validación incorrecta de la renovación de certificados de cliente de Kubernetes permite a un administrador de clúster gestionado forjar un certificado de cliente que puede ser aprobado por el controlador de OCM. Esto permite la escalada de privilegios entre clústeres y puede permitir a un atacante obtener control sobre otros clústeres gestionados, incluyendo el clúster central."}],"id":"CVE-2026-4740","lastModified":"2026-10-26T21:10:00.170","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":1.5,"impactScore":6.0,"source":"secalert@redhat.com","type":"Secondary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":1.5,"impactScore":6.0,"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-4740","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","timestamp":"2026-04-09T14:40:37.454585Z","version":"2.0.3"}}]},"published":"2026-04-07T15:17:46.797","references":[{"source":"secalert@redhat.com","url":"https://access.redhat.com/errata/RHSA-2026:11414"},{"source":"secalert@redhat.com","url":"https://access.redhat.com/errata/RHSA-2026:13542"},{"source":"secalert@redhat.com","url":"https://access.redhat.com/errata/RHSA-2026:13853"},{"source":"secalert@redhat.com","url":"https://access.redhat.com/errata/RHSA-2026:8218"},{"source":"secalert@redhat.com","url":"https://access.redhat.com/errata/RHSA-2026:9848"},{"source":"secalert@redhat.com","tags":["Vendor Advisory"],"url":"https://access.redhat.com/security/cve/CVE-2026-4740"},{"source":"secalert@redhat.com","tags":["Exploit","Third Party Advisory"],"url":"https://blog.arfevrier.fr/open-cluster-management-cross-cluster-escape/"},{"source":"secalert@redhat.com","tags":["Issue Tracking","Vendor Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2450590"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:11414"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:13542"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:13853"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:8218"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:9848"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","tags":["Vendor Advisory"],"url":"https://access.redhat.com/security/cve/CVE-2026-4740"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","tags":["Issue Tracking","Vendor Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2450590"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4740.json"}],"sourceIdentifier":"secalert@redhat.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-295"}],"source":"secalert@redhat.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-295"}],"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","type":"Secondary"}]}
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