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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
Basado en la clasificación ocupacional SOC
Mostrando SKILL.md
| name | cis-ubuntu1804-v220-4-1-9 |
| description | Ensure at is restricted to authorized users |
| category | cis-iam |
| version | 2.2.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-18.04","cron","scheduling"] |
| cis_id | 4.1.9 |
| cis_benchmark | CIS Ubuntu Linux 18.04 LTS Benchmark v2.2.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Configure /etc/at.allow to allow specific users to use the at service. If /etc/at.allow does not exist, then /etc/at.deny is checked. Any user not specifically defined in this file is allowed to use at. By removing the file, only users in /etc/at.allow are allowed to use at.
Note: Even though a given user is not listed in at.allow, at jobs can still be run as that user.
The at.allow file only controls administrative access to the at command for scheduling and modifying at jobs.
On many systems, only the system administrator is authorized to schedule at jobs. Using the at.allow file to control who can run at jobs enforces this policy. It is easier to manage an allow list than a deny list. In a deny list, you could potentially add a user ID to the system and forget to add it to the deny files.
Run the following commands and verify that /etc/at.deny does not exist, /etc/at.allow exists, and the permissions and ownership are correct:
stat -c "%a %U %G" /etc/at.allow
stat /etc/at.deny
/etc/at.allow should exist with permissions 640 or more restrictive, owned by root:root.
/etc/at.deny should not exist (stat should return "No such file or directory").
Run the following commands to remove /etc/at.deny, create /etc/at.allow, and set the permissions:
rm -f /etc/at.deny
touch /etc/at.allow
chmod g-wx,o-rwx /etc/at.allow
chown root:root /etc/at.allow
v8 - 3.3 Configure Data Access Control Lists - Configure data access control lists based on a user's need to know. Apply data access control lists, also known as access permissions, to local and remote file systems, databases, and applications.
v7 - 14.6 Protect Information through Access Control Lists - Protect all information stored on systems with file system, network share, claims, application, or database specific access control lists.
Automated