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Showing SKILL.md
| name | cis-ubuntu1604-v200-2-1-3 |
| description | Ensure Avahi Server is not installed |
| category | cis-networking |
| version | 2.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-16.04","services"] |
| cis_id | 2.1.3 |
| cis_benchmark | CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Avahi is a free zeroconf implementation, including a system for multicast DNS/DNS-SD service discovery. Avahi allows programs to publish and discover services and hosts running on a local network with no specific configuration. For example, a user can plug a computer into a network and Avahi automatically finds printers to print to, files to look at and people to talk to, as well as network services running on the machine.
Automatic discovery of network services is not normally required for system functionality. It is recommended to remove this package to reduce the potential attack surface.
Run the following command to verify avahi-daemon is not installed:
dpkg -s avahi-daemon | grep -E '(Status:|not installed)'
dpkg-query: package 'avahi-daemon' is not installed and no information is available
Run the following commands to remove avahi-daemon:
systemctl stop avahi-daaemon.service
systemctl stop avahi-daemon.socket
apt purge avahi-daemon
avahi-daemon is not installed on minimal server installations.
macOS post-exploitation for credential harvesting, DTrace monitoring, TCC bypass, and stealth operations via native tools
Windows userland post-exploitation for credential harvesting, monitoring, AMSI/ETW bypass, and stealth operations
Kubernetes post-exploitation for container escape, secret extraction, RBAC abuse, and cluster persistence
Based on SOC occupation classification
