Check: UBTU-20-010136
Canonical Ubuntu 20.04 LTS STIG:
UBTU-20-010136
(in versions v1 r11 through v1 r1)
Title
The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the su command. (Cat II impact)
Discussion
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
Check Content
Verify the Ubuntu operating system generates audit records upon successful/unsuccessful attempts to use the "su" command. Check the configured audit rules with the following commands: $ sudo auditctl -l | grep '/bin/su' -a always,exit -F path=/bin/su -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-priv_change If the command does not return lines that match the example or the lines are commented out, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier, and the string after it does not need to match the example output above.
Fix Text
Configure the Ubuntu operating system to generate audit records when successful/unsuccessful attempts to use the "su" command occur. Add or update the following rules in the "/etc/audit/rules.d/stig.rules" file: -a always,exit -F path=/bin/su -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-priv_change To reload the rules file, issue the following command: $ sudo augenrules --load
Additional Identifiers
Rule ID: SV-238252r653931_rule
Vulnerability ID: V-238252
Group Title: SRG-OS-000064-GPOS-00033
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000172 |
The information system generates audit records for the events defined in AU-2 d. with the content defined in AU-3. |
Controls
Number | Title |
---|---|
AU-12 |
Audit Generation |