| name | cis-ubuntu2004-v300-2-1-5 |
| description | Ensure dnsmasq services are not in use |
| category | cis-networking |
| version | 3.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-20.04","services"] |
| cis_id | 2.1.5 |
| cis_benchmark | CIS Ubuntu Linux 20.04 LTS Benchmark v3.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
2.1.5 Ensure dnsmasq services are not in use (Automated)
Profile
- Level 1 - Server
- Level 1 - Workstation
Description
dnsmasq is a lightweight tool that provides DNS caching, DNS forwarding, and DHCP (Dynamic Host Configuration Protocol) services.
Rationale
Unless a system is specifically designated to act as a DNS caching proxy or DHCP server, it is recommended that the service be disabled to reduce the potential attack surface.
Audit Procedure
Command Line
Run the following command to verify dnsmasq is not installed:
If installed, run:
Verify the service is not enabled and not active.
Expected Result
dnsmasq should not be installed, or if installed, the service should be stopped and masked.
Remediation
Command Line
Run the following commands to stop, mask, and purge dnsmasq:
Default Value
dnsmasq is not installed by default.
References
- NIST SP 800-53 Rev. 5: CM-7
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|
| v8 | 4.8 Uninstall or Disable Unnecessary Services on Enterprise Assets and Software | | x | x |
| v7 | 9.2 Ensure Only Approved Ports, Protocols and Services Are Running | | x | x |
MITRE ATT&CK Mappings: T1203, T1210, T1543, T1543.002 | TA0008 | M1042