cyberstrikeus 1.7.1 Ensure GDM is removed (Automated)
Profile
- Level 2 - Server
Description
The GNOME Display Manager (GDM) is a program that manages graphical display servers and handles graphical user logins.
Rationale
If a Graphical User Interface (GUI) is not required, it should be removed to reduce the attack surface of the system.
Impact
Removing the GNOME Display manager will remove the Graphical User Interface (GUI) from the system.
Audit Procedure
Command Line
Run the following command and verify gdm3 is not installed:
# dpkg-query -s gdm3 &>/dev/null && echo "gdm3 is installed"
Nothing should be returned.
Expected Result
No output should be returned, confirming gdm3 is not installed.
Remediation
Command Line
Run the following commands to uninstall gdm3 and remove unused dependencies:
# apt purge gdm3
# apt autoremove gdm3
References
- NIST SP 800-53 Rev. 5: CM-11
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 4.8 Uninstall or Disable Unnecessary Services on Enterprise Assets and Software | * | * | |
| v7 | 9.2 Ensure Only Approved Ports, Protocols and Services Are Running | * | * |
MITRE ATT&CK Mappings: T1543, T1543.002 | TA0002 | M1033