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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-ubuntu1604-v200-6-1-9 |
| description | Ensure permissions on /etc/gshadow- are configured |
| category | cis-storage |
| version | 2.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-16.04","file-permissions","maintenance"] |
| cis_id | 6.1.9 |
| cis_benchmark | CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
The /etc/gshadow- file is used to store backup information about groups that is critical to the security of those accounts, such as the hashed password and other security information.
It is critical to ensure that the /etc/gshadow- file is protected from unauthorized access. Although it is protected by default, the file permissions could be changed either inadvertently or through malicious actions.
Run the following command and verify Uid is 0/root, Gid is 0/root or <gid>/shadow, and Access is 640 or more restrictive:
stat /etc/gshadow-
Access: (0640/-rw-r-----) Uid: ( 0/ root) Gid: ( 42/ shadow)
Run one of the following commands to set ownership of /etc/gshadow- to root and group to either root or shadow:
chown root:root /etc/gshadow-
chown root:shadow /etc/gshadow-
Run the following command to remove excess permissions from /etc/gshadow-:
chmod u-x,g-wx,o-rwx /etc/gshadow-
Access: (0640/-rw-r-----) Uid: ( 0/ root) Gid: ( 42/ shadow)
| Controls Version | Control |
|---|---|
| v7 | 16.4 Encrypt or Hash all Authentication Credentials Encrypt or hash with a salt all authentication credentials when stored. |
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