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Showing SKILL.md
| name | cis-ubuntu1804-v220-4-5-3 |
| description | Ensure default group for the root account is GID 0 |
| category | cis-iam |
| version | 2.2.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-18.04","users","account-security"] |
| cis_id | 4.5.3 |
| cis_benchmark | CIS Ubuntu Linux 18.04 LTS Benchmark v2.2.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
The usermod command can be used to specify which group the root user belongs to. This affects permissions of files that are created by the root user.
Using GID 0 for the root account helps prevent root-owned files from accidentally becoming accessible to non-privileged users.
Run the following command and verify the result is 0:
grep "^root:" /etc/passwd | cut -f4 -d:
0
Run the following command to set the root user default group to GID 0:
usermod -g 0 root
v8 - 3.3 Configure Data Access Control Lists - Configure data access control lists based on a user's need to know.
v7 - 14.6 Protect Information through Access Control Lists.
Automated
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
