Detections
Analytics

SLEM-05-654100 - SLEM 5 must generate audit records for all uses of the "ssh-keysign" command.

Information

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 commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise.

Solution

Configure SLEM 5 to generate an audit record for all uses of the "ssh-keysign" command.

Add or modify the following line in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/lib/ssh/ssh-keysign -F perm=x -F auid>=1000 -F auid!=unset -k privileged-ssh-keysign

To reload the rules file, restart the audit daemon:

 > sudo systemctl restart auditd.service

or issue the following command:

 > sudo augenrules --load

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_SLEM_5_V1R3_STIG.zip

Item Details

Category: AUDIT AND ACCOUNTABILITY, MAINTENANCE

References: 800-53|AU-3, 800-53|AU-3(1), 800-53|AU-12a., 800-53|AU-12c., 800-53|MA-4(1)(a), CAT|II, CCI|CCI-000130, CCI|CCI-000135, CCI|CCI-000169, CCI|CCI-000172, CCI|CCI-002884, Rule-ID|SV-261443r996736_rule, STIG-ID|SLEM-05-654100, Vuln-ID|V-261443

Plugin: Unix

Control ID: 85a25de031e4d783c0611ef3bb855ef854834c373a5c4f96002fd6d77b95a92b