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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
| name | cis-gcp-cos-1.1.9 |
| description | Ensure nodev option set on /home partition |
| category | cis-gcp-cos |
| version | 1.2.0 |
| author | cyberstrike-official |
| tags | ["cis","gcp","container-optimized-os","filesystem","partitions","mount-options","home"] |
| cis_id | 1.1.9 |
| cis_benchmark | CIS Google Container-Optimized OS Benchmark v1.2.0 |
| tech_stack | ["gcp","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
The nodev mount option specifies that the filesystem cannot contain special devices.
Since the user partitions are not intended to support devices, set this option to ensure that users cannot attempt to create block or character special devices.
Verify that the nodev option is set if a /home partition exists.
Run the following command and verify that nothing is returned:
# mount | grep -E '\s/home\s' | grep -v nodev
The command should return no output, confirming that the nodev option is set on the /home partition.
Run the following command to remount /home:
# mount -o remount,nodev /home
Note: /etc is stateless on Container-Optimized OS. Therefore, /etc cannot be used to make these changes persistent across reboots. The steps mentioned above needs to be performed after every boot.
The actions in this recommendation refer to the /home partition, which is the default user partition that is defined in many distributions. If you have created other user partitions, it is recommended that the Remediation and Audit steps be applied to these partitions as well.
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| 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. | x | x | x |
| v7 | 5.1 Establish Secure Configurations - Maintain documented, standard security configuration standards for all authorized operating systems and software. | x | x | x |
Level 1 - Server | Automated