A file integrity baseline must be created.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-51391	RHEL-06-000018	SV-65601r1_rule		Medium

Description
For AIDE to be effective, an initial database of "known-good" information about files must be captured and it should be able to be verified against the installed files.

STIG	Date
Red Hat Enterprise Linux 6 Security Technical Implementation Guide	2018-11-28

Details

Check Text ( C-53727r1_chk )
To find the location of the AIDE database file, run the following command: # grep DBDIR /etc/aide.conf Using the defined values of the [DBDIR] and [database] variables, verify the existence of the AIDE database file: # ls -l [DBDIR]/[database_file_name] If there is no database file, this is a finding.

Fix Text (F-56189r1_fix)
Run the following command to generate a new database: # /usr/sbin/aide --init By default, the database will be written to the file "/var/lib/aide/aide.db.new.gz". Storing the database, the configuration file "/etc/aide.conf", and the binary "/usr/sbin/aide" (or hashes of these files), in a secure location (such as on read-only media) provides additional assurance about their integrity. The newly-generated database can be installed as follows: # cp /var/lib/aide/aide.db.new.gz /var/lib/aide/aide.db.gz To initiate a manual check, run the following command: # /usr/sbin/aide --check If this check produces any unexpected output, investigate.

Fix Text (F-56189r1_fix)

Run the following command to generate a new database:

# /usr/sbin/aide --init

By default, the database will be written to the file "/var/lib/aide/aide.db.new.gz". Storing the database, the configuration file "/etc/aide.conf", and the binary "/usr/sbin/aide" (or hashes of these files), in a secure location (such as on read-only media) provides additional assurance about their integrity. The newly-generated database can be installed as follows:

# cp /var/lib/aide/aide.db.new.gz /var/lib/aide/aide.db.gz

To initiate a manual check, run the following command:

# /usr/sbin/aide --check

If this check produces any unexpected output, investigate.