vulnerability

Red Hat: CVE-2024-56433: shadow-utils: Default subordinate ID configuration in /etc/login.defs could lead to compromise (Multiple Advisories)

Severity
3
CVSS
(AV:L/AC:M/Au:S/C:P/I:P/A:N)
Published
Dec 26, 2024
Added
Jul 9, 2025
Modified
Jan 28, 2026

Description

shadow-utils (aka shadow) 4.4 through 4.17.0 establishes a default /etc/subuid behavior (e.g., uid 100000 through 165535 for the first user account) that can realistically conflict with the uids of users defined on locally administered networks, potentially leading to account takeover, e.g., by leveraging newuidmap for access to an NFS home directory (or same-host resources in the case of remote logins by these local network users). NOTE: it may also be argued that system administrators should not have assigned uids, within local networks, that are within the range that can occur in /etc/subuid.

Solutions

no-fix-redhat-rpm-packageredhat-upgrade-shadow-utilsredhat-upgrade-shadow-utils-debuginforedhat-upgrade-shadow-utils-debugsourceredhat-upgrade-shadow-utils-subidredhat-upgrade-shadow-utils-subid-debuginforedhat-upgrade-shadow-utils-subid-devel
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