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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-ubuntu1804-v220-4-5-1-4 |
| description | Ensure inactive password lock is 30 days or less |
| category | cis-iam |
| version | 2.2.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-18.04","users","password-policy"] |
| cis_id | 4.5.1.4 |
| cis_benchmark | CIS Ubuntu Linux 18.04 LTS Benchmark v2.2.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
User accounts that have been inactive for an extended period of time pose a security risk. An attacker could use an inactive account to gain access to the system without being detected. It is recommended that inactive accounts be locked after 30 days.
Inactive accounts pose a threat to system security since the users are not logging in to notice failed login attempts or other anomalies.
Run the following command and verify INACTIVE is 30 or less:
useradd -D | grep INACTIVE
Verify all users with a password have their inactive period set:
awk -F: '($2~/^\$.+\$/){print $1 " " $7}' /etc/shadow
INACTIVE=30 or less, but not -1.
No user should have a value greater than 30 or -1 in field 7 of /etc/shadow.
Set the default inactive period:
useradd -D -f 30
Modify user parameters for all users with a password set to match:
chage --inactive 30 <user>
INACTIVE=-1
v8 - 5.2 Use Unique Passwords - Use unique passwords for all enterprise assets.
v7 - 4.4 Use Unique Passwords.
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