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Group Identifiers (GIDs) reserved for system accounts must not be assigned to non-system groups.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-780 | GEN000360 | SV-780r2_rule | ECSC-1 | Medium |
| Description |
|---|
| Reserved GIDs are typically used by system software packages. If non-system groups have GIDs in this range, they may conflict with system software, possibly leading to the group having permissions to modify system files. |
| STIG | Date |
|---|---|
| VMware ESX 3 Server | 2016-05-13 |
Details
| Check Text ( C-280r2_chk ) |
|---|
| # more /etc/passwd Confirm all accounts with a GID of 99 and below (499 and below for Linux) are used by a system account. If a GID reserved for system accounts, 0 - 99 (0 - 499 for Linux), is used by a non-system account, this is a finding. |
| Fix Text (F-934r2_fix) |
|---|
| Change the primary group GID numbers for non-system accounts with reserved primary group GIDs (those less or equal to 99 in general, or 499 for Linux). |