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Showing SKILL.md
| name | cis-ubuntu1204-v110-12-4 |
| description | Verify User/Group Ownership on /etc/passwd |
| category | cis-os-hardening |
| version | 1.1.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu",12.04,"linux","file-ownership","passwd","access-control"] |
| cis_id | 12.4 |
| cis_benchmark | CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
The /etc/passwd file contains a list of all the valid userIDs defined in the system, but not the passwords. The command below sets the owner and group of the file to root.
The /etc/passwd file needs to be protected from unauthorized changes by non-privileged users, but needs to be readable as this information is used with many non-privileged programs.
Run the following command to determine the user and group ownership on the /etc/passwd file:
/bin/ls -l /etc/passwd
-rw-r--r-- 1 root root <size> <date> /etc/passwd
Owner should be root and group should be root.
If the user and group ownership of the /etc/passwd file are incorrect, run the following command to correct them:
/bin/chown root:root /etc/passwd
root:root
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