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UIDs reserved for system accounts must not be assigned to non-system accounts.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-11946 | GEN000340 | SV-44825r1_rule | ECSC-1 | Medium |
| Description |
|---|
| Reserved UIDs are typically used by system software packages. If non-system accounts have UIDs in this range, they may conflict with system software, possibly leading to the user having permissions to modify system files. |
| STIG | Date |
|---|---|
| SUSE Linux Enterprise Server v11 for System z | 2013-04-18 |
Details
| Check Text ( C-42297r1_chk ) |
|---|
| Check the UID assignments for all accounts. # awk -F: '$3 <= 499 {printf "%15s:%4s\n", $1, $3}' /etc/passwd | sort -n -t: -k2 Confirm all accounts with a UID of 499 and below are used by a system account. If a UID reserved for system accounts (0 - 499) is used by a non-system account, then this is a finding. |
| Fix Text (F-38264r1_fix) |
|---|
| Change the UID numbers for non-system accounts with reserved UIDs (those less or equal to 499). |