SV-261443r996736_rule
V-261443
SRG-OS-000037-GPOS-00015
SLEM-05-654100
CAT II
10
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
Verify SLEM 5 generates an audit record for all uses of the "ssh-keysign" command with the following command:
> sudo auditctl -l | grep -w '/usr/lib/ssh/ssh-keysign'
-a always,exit -S all -F path=/usr/lib/ssh/ssh-keysign -F perm=x -F auid>=1000 -F auid!=-1 -F key=privileged-ssh-keysign
If the command does not return any output, this is a finding.
Note: The "key=" value is arbitrary and can be different from the example output above.
V-261443
False
SLEM-05-654100
Verify SLEM 5 generates an audit record for all uses of the "ssh-keysign" command with the following command:
> sudo auditctl -l | grep -w '/usr/lib/ssh/ssh-keysign'
-a always,exit -S all -F path=/usr/lib/ssh/ssh-keysign -F perm=x -F auid>=1000 -F auid!=-1 -F key=privileged-ssh-keysign
If the command does not return any output, this is a finding.
Note: The "key=" value is arbitrary and can be different from the example output above.
M
5596