Menu
The review-first prompt is selected by default. You can switch to a direct command or download a local copy.
Read SKILL.md and any companion files shown by SkillsMP before deciding whether to install.
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
A direct command skips the review prompt. Inspect the source before running it.
npx skills add https://github.com/CyberStrikeus/CyberStrike --skill cis-ubuntu2004-v300-7-2-2The command stays on one line. Scroll horizontally to inspect it before copying.
Prefer a local copy? Download the files currently available to SkillsMP.
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-ubuntu2004-v300-7-2-2 |
| description | Ensure /etc/shadow password fields are not empty |
| category | cis-iam |
| version | 3.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-20.04","users"] |
| cis_id | 7.2.2 |
| cis_benchmark | CIS Ubuntu Linux 20.04 LTS Benchmark v3.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
An account with an empty password field means that anybody may log in as that user without providing a password.
All accounts must have passwords or be locked to prevent the account from being used by an unauthorized user.
None
Run the following command and verify that no output is returned:
# awk -F: '($2 == "" ) { print $1 " does not have a password "}' /etc/shadow
No output should be returned.
If any accounts in the /etc/shadow file do not have a password, run the following command to lock the account until it can be determined why it does not have a password:
# passwd -l <username>
Also, check to see if the account is logged in and investigate what it is being used for to determine if it needs to be forced off.
N/A
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 5.2 Use Unique Passwords | X | X | X |
| v7 | 4.4 Use Unique Passwords | X | X |
MITRE ATT&CK Mappings:
| Techniques / Sub-techniques | Tactics | Mitigations |
|---|---|---|
| T1078, T1078.001, T1078.003 | TA0003 | M1027 |