{"id":"CVE-2025-4437","sourceIdentifier":"secalert@redhat.com","published":"2025-08-20T13:15:28.673","lastModified":"2026-09-26T00:10:00.127","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"There's a vulnerability in the CRI-O application where when container is launched with securityContext.runAsUser specifying a non-existent user, CRI-O attempts to create the user, reading the container's entire /etc/passwd file into memory. If this file is excessively large, it can cause the a high memory consumption leading applications to be killed due to out-of-memory. As a result a denial-of-service can be achieved, possibly disrupting other pods and services running in the same host."},{"lang":"es","value":"Hay una vulnerabilidad en la aplicación CRI-O donde cuando un contenedor es lanzado con securityContext.runAsUser especificando un usuario inexistente, CRI-O intenta crear el usuario, leyendo el archivo /etc/p4ssd completo del contenedor en memoria. Si este archivo es excesivamente grande, puede causar un alto consumo de memoria, lo que lleva a que las aplicaciones sean terminadas debido a falta de memoria. Como resultado, se puede lograr una denegación de servicio, posiblemente interrumpiendo otros pods y servicios que se ejecutan en el mismo host."}],"affected":[{"source":"secalert@redhat.com","affectedData":[{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"cri-o","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift/ose-rhel-coreos-8","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift/ose-rhel-coreos-9","cpes":["cpe:/a:redhat:openshift:4"]}]}],"metrics":{"cvssMetricV31":[{"source":"secalert@redhat.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","baseScore":5.7,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.1,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2025-08-20T15:15:37.416280Z","id":"CVE-2025-4437","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"secalert@redhat.com","type":"Secondary","description":[{"lang":"en","value":"CWE-770"}]}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2025-4437","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2375084","source":"secalert@redhat.com"}]}