CCE-92921-6Platform: cpe:/o:ubuntu:ubuntu_linux:19.04 | Date: (C)2019-11-07 (M)2023-07-04 |
Collect Session Initiation 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."""
Parameter:
[yes/no]
Technical Mechanism:
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).
Fix:
"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)"
CCSS Severity: | CCSS Metrics: |
CCSS Score : 6.3 | Attack Vector: NETWORK |
Exploit Score: 2.8 | Attack Complexity: LOW |
Impact Score: 3.4 | Privileges Required: LOW |
Severity: MEDIUM | User Interaction: NONE |
Vector: AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L | Scope: UNCHANGED |
| Confidentiality: LOW |
| Integrity: LOW |
| Availability: LOW |
| |
References: Resource Id | Reference |
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SCAP Repo OVAL Definition | oval:org.secpod.oval:def:55134 |