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All shell files must be group-owned by root, bin, sys, or system.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22365 | GEN002210 | SV-26489r1_rule | ECLP-1 | Medium |
| Description |
|---|
| If shell files are group-owned by users other than root or a system group, they could be modified by intruders or malicious users to perform unauthorized actions. |
| STIG | Date |
|---|---|
| UNIX SRG | 2013-03-26 |
Details
| Check Text ( C-27548r1_chk ) |
|---|
| If /etc/shells exists, check the group ownership of each shell referenced. Procedure: # cat /etc/shells | xargs -n1 ls -lL Otherwise, check any shells found on the system. Procedure: # find / -name "*sh" | xargs -n1 ls -lL If a shell is not group-owned by root, bin, sys, or system, this is a finding. |
| Fix Text (F-23718r1_fix) |
|---|
| Change the group-owner of the shell to root, bin, sys, or system. Procedure: # chgrp root |