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Showing SKILL.md
| name | cis-gcp-cos-5.1.1 |
| description | Ensure permissions on /etc/ssh/sshd_config are configured |
| category | cis-gcp-cos |
| version | 1.2.0 |
| author | cyberstrike-official |
| tags | ["cis","gcp","container-optimized-os","ssh","sshd","sshd-config","permissions"] |
| cis_id | 5.1.1 |
| cis_benchmark | CIS Google Container-Optimized OS Benchmark v1.2.0 |
| tech_stack | ["gcp","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
The /etc/ssh/sshd_config file contains configuration specifications for sshd. The command below sets the owner and group of the file to root.
The /etc/ssh/sshd_config file needs to be protected from unauthorized changes by non-privileged users.
Run the following command and verify Uid and Gid are both 0/root and Access does not grant permissions to group or other:
# stat /etc/ssh/sshd_config
Access: (0600/-rw-------) Uid: ( 0/ root) Gid: ( 0/ root)
Uid is 0/rootGid is 0/root0600/-rw------- (no permissions for group or other)Run the following commands to set ownership and permissions on /etc/ssh/sshd_config:
# chown root:root /etc/ssh/sshd_config
# chmod og-rwx /etc/ssh/sshd_config
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 3.3 Configure Data Access Control Lists | x | x | x |
| v7 | 5.1 Establish Secure Configurations | x | x | x |
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
