cyberstrikeus 2.2.15 Ensure dnsmasq is not installed (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, DNS forwarding and/or DHCP server, it is recommended that the package be removed to reduce the potential attack surface.
Audit Procedure
Command Line
Run one of the following commands to verify dnsmasq is not installed:
# dpkg-query -s dnsmasq &>/dev/null && echo "dnsmasq is installed"
Nothing should be returned.
Expected Result
No output (empty result).
Remediation
Command Line
Run the following command to remove dnsmasq:
# apt purge dnsmasq
References
- NIST SP 800-53 Rev. 5: CM-7
CIS Controls
- 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