Title

System log files must have mode 0640 or less permissive. (Cat II impact)

Discussion

If the system log files are not protected, unauthorized users could change the logged data, eliminating its forensic value.

Check Content

Check the mode of log files. # ls -lLR /var/log /var/log/syslog /var/adm /var/opt Note that some of the above directories will contain more than just system log files. For example: /var/adm/sa, /var/adm/sw, etc. Any non-system log files contained within the above directories should be excluded from this requirement. If any of the system log files have modes more permissive than 0640, this is a finding.

Fix Text

Change the mode of the system log files to 0640 or less permissive. # chmod 0640 <path>/<system-log-file> NOTE: Do not confuse system log files with audit logs.

Additional Identifiers

Rule ID: SV-35275r1_rule

Vulnerability ID: V-787

Group Title: GEN001260

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.