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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-apache24-5.6 |
| description | Ensure the Default CGI Content test-cgi Script Is Removed |
| category | cis-apache |
| version | 2.3.0 |
| author | cyberstrike-official |
| tags | ["cis","apache","linux","features","content","options"] |
| cis_id | 5.6 |
| cis_benchmark | CIS Apache HTTP Server 2.4 Benchmark v2.3.0 |
| tech_stack | ["linux","apache"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Most Web Servers, including Apache installations have default CGI content which is not needed or appropriate for production use. The primary function for these sample programs is to demonstrate the capabilities of the web server. A common default CGI content for Apache installations is the script test-cgi. This script will print back to the requester CGI environment variables which includes many server configuration details.
CGI programs have a long history of security bugs and problems associated with improperly accepting user-input. Since these programs are often targets of attackers, we need to make sure that there are no unnecessary CGI programs that could potentially be used for malicious purposes. Usually these programs are not written for production use and consequently little thought was given to security in their development. The test-cgi script in particular will disclose inappropriate information about the web server including directory paths and detailed version and configuration information.
Perform the following to determine if the recommended state is implemented:
Script, ScriptAlias or ScriptAliasMatch directives.test-cgi script is not installed in any configured cgi-bin directory.Perform the following to implement the recommended state:
Script, ScriptAlias, ScriptAliasMatch directives.test-cgi default CGI in cgi-bin directory if it is installed.# rm $APACHE_PREFIX/cgi-bin/test-cgiThe default source installation includes the test-cgi script. However, this script is not executable by default.
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|
| v8 | 9.4 Restrict Unnecessary or Unauthorized Browser and Email Client Extensions Restrict, either through uninstalling or disabling, any unauthorized or unnecessary browser or email client plugins, extensions, and add-on applications. | ● | ● | |
| v7 | 4.7 Limit Access to Script Tools Limit access to scripting tools (such as Microsoft PowerShell and Python) to only administrative or development users with the need to access those capabilities. | ● | ● | |
| v7 | 7.2 Disable Unnecessary or Unauthorized Browser or Email Client Plugins Uninstall or disable any unauthorized browser or email client plugins or add-on applications. | ● | ● |