8.1.9 Collect Session Initiation Information - /var/log/wtmp

Information

Monitor session initiation events. The parameters in this section track changes to the files associated with session events. The file /var/run/utmp file tracks all currently logged in users. The /var/log/wtmp file tracks logins, logouts, shutdown and reboot events. All audit records will be tagged with the identifier 'session.' The file /var/log/btmp keeps track of failed login attempts and can be read by entering the command /usr/bin/last -f /var/log/btmp. All audit records will be tagged with the identifier 'logins.' Monitoring these files for changes could alert a system administrator to logins occurring at unusual hours, which could indicate intruder activity (i.e. a user logging in at a time when they do not normally log in).

Solution

Add the following lines to the /etc/audit/audit.rules file. -w /var/run/utmp -p wa -k session-w /var/log/wtmp -p wa -k session-w /var/log/btmp -p wa -k session # Execute the following command to restart auditd# pkill -HUP -P 1 auditd Note- Use the last command to read /var/log/wtmp (last with no parameters) and /var/run/utmp (last -f /var/run/utmp)

See Also

https://workbench.cisecurity.org/files/85

Item Details

Category: AUDIT AND ACCOUNTABILITY

References: 800-53|AU-12c.

Plugin: Unix

Control ID: c2d3ea24e3e1c4afaa9eb24108450e289e516df5d3d552798973b7bc56357109