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The audit system must be configured to audit failed attempts to access files and programs.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-51143 | OL6-00-000197 | SV-65353r1_rule | Low |
| Description |
|---|
| Unsuccessful attempts to access files could be an indicator of malicious activity on a system. Auditing these events could serve as evidence of potential system compromise. |
| STIG | Date |
|---|---|
| Oracle Linux 6 Security Technical Implementation Guide | 2018-09-19 |
Details
| Check Text ( C-53547r1_chk ) |
|---|
| To verify that the audit system collects unauthorized file accesses, run the following commands: # grep EACCES /etc/audit/audit.rules # grep EPERM /etc/audit/audit.rules If either command lacks output, this is a finding. |
| Fix Text (F-55951r1_fix) |
|---|
| At a minimum, the audit system should collect unauthorized file accesses for all users and root. Add the following to "/etc/audit/audit.rules", setting ARCH to either "b32" or "b64" as appropriate for your system: -a always,exit -F arch=ARCH -S creat -S open -S openat -S truncate \ -S ftruncate -F exit=-EACCES -F auid>=500 -F auid!=4294967295 -k access -a always,exit -F arch=ARCH -S creat -S open -S openat -S truncate \ -S ftruncate -F exit=-EPERM -F auid>=500 -F auid!=4294967295 -k access -a always,exit -F arch=ARCH -S creat -S open -S openat -S truncate \ -S ftruncate -F exit=-EACCES -F auid=0 -k access -a always,exit -F arch=ARCH -S creat -S open -S openat -S truncate \ -S ftruncate -F exit=-EPERM -F auid=0 -k access |