用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/CyberStrikeus/CyberStrike --skill cis-ubuntu1604-v200-5-5-1-2命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
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
正在显示 SKILL.md
基于 SOC 职业分类
| name | cis-ubuntu1604-v200-5-5-1-2 |
| description | Ensure password expiration is 365 days or less |
| category | cis-iam |
| version | 2.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-16.04","authentication","pam"] |
| cis_id | 5.5.1.2 |
| cis_benchmark | CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Profile Applicability:
Assessment Status: Automated
The PASS_MAX_DAYS parameter in /etc/login.defs allows an administrator to force passwords to expire once they reach a defined age.
The window of opportunity for an attacker to leverage compromised credentials or successfully compromise credentials via an online brute force attack is limited by the age of the password. Therefore, reducing the maximum age of a password also reduces an attacker's window of opportunity. It is recommended that the PASS_MAX_DAYS parameter does not exceed 365 days and is greater than the value of PASS_MIN_DAYS.
Run the following command and verify PASS_MAX_DAYS conforms to site policy, does not exceed 365 days, and is greater than PASS_MIN_DAYS:
grep PASS_MAX_DAYS /etc/login.defs
Expected output:
PASS_MAX_DAYS 365
Run the following command and Review list of users and PASS_MAX_DAYS to verify that all users' PASS_MAX_DAYS conforms to site policy, does not exceed 365 days, and is no less than PASS_MIN_DAYS:
awk -F: '(/^[^:]+:[^!*]/ && ($5>365 || $5~/([0-1]|-1|\s*)/)){print $1 " " $5}' /etc/shadow
Expected Result:
No <user>:<PASS_MAX_DAYS> should be returned.
Set the PASS_MAX_DAYS parameter to conform to site policy in /etc/login.defs:
PASS_MAX_DAYS 365
Modify user parameters for all users with a password set to match:
chage --maxdays 365 <user>
PASS_MAX_DAYS 99999
A value of -1 will disable password expiration.
The password expiration must be greater than the minimum days between password changes or users will be unable to change their password.
| Controls Version | Control |
|---|---|
| v7 | 4.4 Use Unique Passwords - Where multi-factor authentication is not supported (such as local administrator, root, or service accounts), accounts will use passwords that are unique to that system. |