System log files must have mode 0640 or less permissive.

From Oracle Linux 5 Security Technical Implementation Guide

Associated with: CCI-001314

SV-64487r3_rule System log files must have mode 0640 or less permissive.

Vulnerability 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. Procedure: # find /var/log /var/log/syslog /var/adm -type f -perm -640 \! -perm 640 With the exception of /var/log/wtmp, /var/log/Xorg.0.log, and /var/log/gdm/:0.log, if any of the log files have modes more permissive than 0640, this is a finding.

Fix text

Change the mode of the system log file(s) to 0640 or less permissive. Procedure: # chmod 0640 /path/to/system-log-file Note: Do not confuse system log files with audit logs.

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