Check: RHEL-07-030700
Red Hat Enterprise Linux 7 STIG:
RHEL-07-030700
(in versions v3 r14 through v2 r1)
Title
The Red Hat Enterprise Linux operating system must audit all uses of the sudoers file and all files in the /etc/sudoers.d/ directory. (Cat II impact)
Discussion
Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information. At a minimum, the organization must audit the full-text recording of privileged access commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. Satisfies: SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215
Check Content
Verify the operating system generates audit records when successful/unsuccessful attempts to access the "/etc/sudoers" file and files in the "/etc/sudoers.d/" directory. Check for modification of the following files being audited by performing the following commands to check the file system rules in "/etc/audit/audit.rules": # grep -i "/etc/sudoers" /etc/audit/audit.rules -w /etc/sudoers -p wa -k privileged-actions # grep -i "/etc/sudoers.d/" /etc/audit/audit.rules -w /etc/sudoers.d/ -p wa -k privileged-actions If the commands do not return output that match the examples, this is a finding.
Fix Text
Configure the operating system to generate audit records when successful/unsuccessful attempts to access the "/etc/sudoers" file and files in the "/etc/sudoers.d/" directory. Add or update the following rule in "/etc/audit/rules.d/audit.rules": -w /etc/sudoers -p wa -k privileged-actions -w /etc/sudoers.d/ -p wa -k privileged-actions The audit daemon must be restarted for the changes to take effect.
Additional Identifiers
Rule ID: SV-204549r853953_rule
Vulnerability ID: V-204549
Group Title: SRG-OS-000037-GPOS-00015
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000130 |
The information system generates audit records containing information that establishes what type of event occurred. |
| CCI-000135 |
The information system generates audit records containing the organization-defined additional, more detailed information that is to be included in the audit records. |
| CCI-000172 |
The information system generates audit records for the events defined in AU-2 d. with the content defined in AU-3. |
| CCI-002884 |
The organization audits nonlocal maintenance and diagnostic sessions^ organization-defined audit events. |