Title

The systems access control program must log each system access attempt. (Cat II impact)

Discussion

If access attempts are not logged, then multiple attempts to log on to the system by an unauthorized user may go undetected.

Check Content

The tcp_wrappers package (i.e. tcpd) is provided with the SLES mainframe distribution. Other access control programs may be available but will need to be checked manually. Normally, tcpd logs to the mail facility in "/etc/syslog.conf". Determine if syslog is configured to log events by tcpd. Procedure: # more /etc/syslog.conf Look for entries similar to the following: mail.debug /var/adm/maillog mail.none /var/adm/maillog mail.* /var/log/mail authpriv.info /var/log/messages The above entries would indicate mail alerts are being logged. If no entries for mail exist, then tcpd is not logging this is a finding. If an alternate access control program is used and it does not provide logging of access attempts, this is a finding.

Fix Text

Configure the access restriction program to log every access attempt. Ensure the implementation instructions for tcp_wrappers (i.e. tcpd) are followed so system access attempts are recorded to the system log files. If an alternate application is used, it must support this function.

Additional Identifiers

Rule ID: SV-45930r1_rule

Vulnerability ID: V-941

Group Title: GEN006600

Expert Comments

CCIs tied to check.

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