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CVE PROGRAM SOURCE RECORD6.4 Medium

CVE-2025-57851

Mce: privilege escalation via excessive /etc/passwd permissions

Description

A container privilege escalation flaw was found in certain Multicluster Engine for Kubernetes images. This issue stems from the /etc/passwd file being created with group-writable permissions during build time. In certain conditions, an attacker who can execute commands within an affected container, even as a non-root user, can leverage their membership in the root group to modify the /etc/passwd file. This could allow the attacker to add a new user with any arbitrary UID, including UID 0, leading to full root privileges within the container.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Multicluster Engine for Kubernetes

Default version status: affected

Red Hat Multicluster Engine for Kubernetes

Default version status: affected

Red Hat Multicluster Engine for Kubernetes

Default version status: affected

References