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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-ubuntu1804-v220-4-2-8 |
| description | Ensure sshd GSSAPIAuthentication is disabled |
| category | cis-networking |
| version | 2.2.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-18.04","ssh","remote-access"] |
| cis_id | 4.2.8 |
| cis_benchmark | CIS Ubuntu Linux 18.04 LTS Benchmark v2.2.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
The GSSAPIAuthentication parameter specifies whether authentication based on GSSAPI is allowed.
GSSAPI authentication is used to provide additional authentication mechanisms to applications. Allowing GSSAPI authentication through SSH exposes the system's GSSAPI to remote hosts, increasing the attack surface of the system. Unless needed, GSSAPI authentication should be disabled.
Run the following command and verify the output:
sshd -T | grep -i gssapiauthentication
gssapiauthentication no
Edit the /etc/ssh/sshd_config file to set the parameter as follows:
GSSAPIAuthentication no
GSSAPIAuthentication no
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.
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