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.
CVSS Details
- CVSS 3.1 Base Score: 3.6
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade shadow-utilsUpgrade shadow-utils-subid-develUpgrade shadow-utils-subid | Nov 20, 2025 | Nov 11, 2025 |
| Debian | — | No solution exists | May 15, 2025 | Dec 26, 2024 |
| Oracle_linux | — | Upgrade shadow-utils-subidUpgrade shadow-utilsUpgrade shadow-utils-subid-devel | Nov 28, 2025 | Dec 26, 2024 |
| Redhat_linux | — | Upgrade shadow-utils-subid-develUpgrade shadow-utils-subidUpgrade shadow-utils-debuginfoUpgrade shadow-utils-subid-debuginfoUpgrade shadow-utils-debugsourceUpgrade shadow-utilsNo solution exists | Jul 9, 2025 | Dec 26, 2024 |
| Rocky_linux | — | Upgrade shadow-utilsUpgrade shadow-utils-debugsourceUpgrade shadow-utils-debuginfoUpgrade shadow-utils-subid-debuginfoUpgrade shadow-utils-subid-develUpgrade shadow-utils-subid | Feb 5, 2026 | Nov 21, 2025 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Dec 26, 2024 |
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