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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
| name | cis-gcp-cos-4.1.3 |
| description | Ensure permissions on all logfiles are configured |
| category | cis-gcp-cos |
| version | 1.2.0 |
| author | cyberstrike-official |
| tags | ["cis","gcp","container-optimized-os","logging","log-files","auditing"] |
| cis_id | 4.1.3 |
| cis_benchmark | CIS Google Container-Optimized OS Benchmark v1.2.0 |
| tech_stack | ["gcp","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Log files stored in /var/log/ contain logged information from many services on the system, or on log hosts others as well.
It is important to ensure that log files have the correct permissions to ensure that sensitive data is archived and protected.
Run the following command and verify that other has no permissions on any files and group does not have write or execute permissions on any files:
# find /var/log -type f -ls
The output should show that no files have permissions allowing other users to read, write, or execute, and group does not have write or execute permissions.
Run the following commands to set permissions on all existing log files:
find /var/log -type f -exec chmod g-wx,o-rwx "{}" + -o -type d -exec chmod g-w,o-rwx "{}" +
You may also need to change the configuration for your logging software or services for any logs that had incorrect permissions.
| 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 |