OS Command Injection in AUTOM8N WHM/cPanel Plugin

Executive Summary

This is an OS Command Injection vulnerability in the AUTOM8N WHM/cPanel plugin. It exists in CGI scripts that run with root privileges. The scripts fail to properly sanitize user input before passing it to system commands via subprocess.Popen with shell=True. An authenticated WHM user can inject shell metacharacters into parameters like the 'user' field to execute arbitrary OS commands as root on the server.

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Detection Guidance

Check for suspicious activity in web server logs, particularly for requests to borg_restore.cgi or sync_docroots.cgi with unusual parameters. Look for commands like 'touch /tmp/autom8n_poc_evidence' or other unexpected system calls. Review WHM access logs for authenticated users executing CGI scripts with shell metacharacters.

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Impact Analysis

An attacker with WHM access could execute arbitrary commands as root on the server. This could lead to full system compromise, data theft, unauthorized modifications, or denial of service. The impact includes potential loss of sensitive data, system integrity breaches, and disruption of hosted services.

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Compliance Impact

This vulnerability could severely impact compliance with GDPR and HIPAA by enabling unauthorized access to sensitive data. GDPR requires protection of personal data, while HIPAA mandates safeguards for protected health information. A successful exploit could result in data breaches, leading to legal penalties, fines, and reputational damage for organizations subject to these regulations.

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Mitigation Strategies

Disable the AUTOM8N plugin immediately. Remove or restrict access to borg_restore.cgi and sync_docroots.cgi. Update the plugin to the latest commit beyond 82821f7 if a patched version exists. Monitor for unauthorized root access or file creation in /tmp and other system directories.

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