Automated file system mounting tools must not be enabled unless needed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
RHEL-06-000263	RHEL-06-000263	RHEL-06-000263_rule		Low

Description
All filesystems that are required for the successful operation of the system should be explicitly listed in /etc/fstab by and administrator. New filesystems should not be arbitrarily introduced via the automounter.

STIG	Date
Red Hat Enterprise Linux 6 Security Technical Implementation Guide	2013-02-05

Details

Check Text ( C-RHEL-06-000263_chk )
To verify the "autofs" service is disabled, run the following command: chkconfig --list autofs If properly configured, the output should be the following: autofs 0:off 1:off 2:off 3:off 4:off 5:off 6:off If it does not, this is a finding.

Fix Text (F-RHEL-06-000263_fix)
The "autofs" daemon mounts and unmounts filesystems, such as user home directories shared via NFS, on demand. In addition, autofs can be used to handle removable media, and the default configuration provides the cdrom device as "/misc/cd". However, this method of providing access to removable media is not common, so autofs can almost always be disabled if NFS is not in use. Even if NFS is required, it is almost always possible to configure filesystem mounts statically by editing "/etc/fstab" rather than relying on the automounter. If the "autofs" service is not needed to dynamically mount NFS filesystems or removable media, disable the service for all runlevels: # chkconfig --level 0123456 autofs off Stop the service if it is already running: # service autofs stop

Fix Text (F-RHEL-06-000263_fix)

The "autofs" daemon mounts and unmounts filesystems, such as user home directories shared via NFS, on demand. In addition, autofs can be used to handle removable media, and the default configuration provides the cdrom device as "/misc/cd". However, this method of providing access to removable media is not common, so autofs can almost always be disabled if NFS is not in use. Even if NFS is required, it is almost always possible to configure filesystem mounts statically by editing "/etc/fstab" rather than relying on the automounter.

If the "autofs" service is not needed to dynamically mount NFS filesystems or removable media, disable the service for all runlevels:

# chkconfig --level 0123456 autofs off

Stop the service if it is already running:

# service autofs stop