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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
Showing SKILL.md
| name | cis-ubuntu2004-v300-2-1-14 |
| description | Ensure samba file server 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 | 2.1.14 |
| cis_benchmark | CIS Ubuntu Linux 20.04 LTS Benchmark v3.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
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 Server Message Block (SMB) protocol.
If there is no need to share file systems and directories with Windows systems, then Samba should be disabled to reduce the remote attack surface.
Run the following command to verify samba is not installed:
# dpkg-query -W -f='${binary:Package}\t${Status}\t${db:Status-Status}\n' samba
If installed, run:
# systemctl is-enabled smbd.service
# systemctl is-active smbd.service
Verify the service is not enabled and not active.
samba should not be installed, or if installed, the service should be stopped and masked.
Run the following commands to stop, mask, and purge samba:
# systemctl stop smbd.service
# systemctl mask smbd.service
# apt purge samba
samba is not installed by default.
| 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: T1005, T1039, T1083, T1135, T1203, T1210, T1543, T1543.002 | TA0008