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The SMTP service log file must be owned by root.


Overview

Finding ID Version Rule ID IA Controls Severity
V-837 GEN004480 SV-37501r1_rule ECLP-1 Medium
Description
If the SMTP service log file is not owned by root, then unauthorized personnel may modify or delete the file to hide a system compromise.
STIG Date
Red Hat Enterprise Linux 5 Security Technical Implementation Guide 2014-04-02

Details

Check Text ( C-36158r1_chk )
Locate any mail log files by checking the syslog configuration file.

Procedure:
The check procedure is the same for both sendmail and Postfix.
Identify any log files configured for the "mail" service (excluding mail.none) at any severity level and check the ownership
# egrep "mail\.[^n][^/]*" /etc/syslog.conf|sed 's/^[^/]*//'|xargs ls -lL

If any mail log file is not owned by root, this is a finding.

Fix Text (F-31408r1_fix)
Change the ownership of the sendmail log file.

Procedure:
The fix procedure is the same for both sendmail and Postfix.
# chown root