LOW 3.6 Microsoft

CVE-2024-56433

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.

Microsoft Security Update 2024-Dec: 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.

Affected Products

References

Published: 2024-12-10 · Source: Microsoft · Feed updated: 2026-09-28
This low severity vulnerability with a CVSS score of 3.6 was published on 2024-12-10 via Microsoft. Affected: azl3 shadow-utils shadow-utils_4.18.0 on Azure Linux 3.0, cbl2 shadow-utils 4.9-14 on CBL Mariner 2.0.
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