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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
| name | cis-ubuntu1804-v220-4-2-7 |
| description | Ensure sshd DisableForwarding is enabled |
| category | cis-networking |
| version | 2.2.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-18.04","ssh","remote-access"] |
| cis_id | 4.2.7 |
| cis_benchmark | CIS Ubuntu Linux 18.04 LTS Benchmark v2.2.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
DisableForwarding disables all forwarding features, including X11, ssh-agent, TCP and StreamLocal. This overrides all other forwarding-related options and can simplify restricted configurations.
Leaving port forwarding mechanisms enabled can expose the organization to security risks and back-channels. SSH includes a port-forwarding mechanism that enables tunneling of network protocols and allows for unauthorized communication to bypass firewall restrictions.
SSH tunnels are widely used in many corporate environments. In some environments the applications themselves may have limited native support for security and may rely on SSH tunnels for encryption and security. Disabling SSH forwarding may impact these systems. Review the need for SSH forwarding before disabling it.
Run the following command and verify the output:
sshd -T | grep -i disableforwarding
disableforwarding yes
Edit the /etc/ssh/sshd_config file to set the parameter as follows:
DisableForwarding yes
DisableForwarding no
v8 - 4.8 Uninstall or Disable Unnecessary Services on Enterprise Assets and Software - Uninstall or disable unnecessary services on enterprise assets and software, such as an unused file sharing service, web application module, or service function.
v7 - 9.2 Ensure Only Approved Ports, Protocols, and Services Are Running.
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