cyberstrikeus 2.2.12 Ensure Samba is not enabled (Scored)
Profile Applicability
- Level 1 - Server
- Level 1 - Workstation
Description
The Samba daemon allows system administrators to configure their Linux systems to share file systems and directories with Windows desktops. Samba will advertise the file systems and directories via the Small Message Block (SMB) protocol. Windows desktop users will be able to mount these directories and file systems as letter drives on their systems.
Rationale
If there is no need to mount directories and file systems to Windows systems, then this service can be deleted to reduce the potential attack surface.
Audit Procedure
Ensure no start conditions listed for smbd:
initctl show-config smbd
Verify the output shows smbd with no start conditions.
Expected Result
The smbd service should have no start conditions listed.
Remediation
Remove or comment out start lines in /etc/init/smbd.conf:
#start on (local-filesystems and net-device-up)
Default Value
Samba is not enabled by default.
References
- CIS Controls: 9.1 Limit Open Ports, Protocols, and Services
Profile
- Level 1 - Server
- Level 1 - Workstation