Directory Traversal in Cloud Commander

Executive Summary

Cloud Commander before version 19.20.2 has a directory traversal vulnerability in its REST file-operation and markdown endpoints. The issue occurs because the software fails to properly validate path normalization, allowing attackers to use path traversal sequences like ..%2f..%2f to read, write, move, or copy files outside the intended root directory.

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Detection Guidance

To detect this vulnerability, monitor CloudCmd endpoints for unusual path traversal attempts. Check logs for requests containing sequences like ../ or URL-encoded ..%2f. Verify if file operations access files outside the configured root directory.

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Impact Analysis

This vulnerability allows attackers to access sensitive files outside the configured root directory, potentially leading to unauthorized file reads, writes, deletions, or modifications. It could also enable remote code execution by overwriting critical system files, especially in hardened deployments where the root directory is restricted.

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Compliance Impact

This vulnerability could severely impact compliance with GDPR and HIPAA by allowing unauthorized access to sensitive files. GDPR requires strict protection of personal data, while HIPAA mandates safeguards for protected health information. A path traversal flaw enabling file access outside intended directories could lead to unauthorized exposure or modification of regulated data, resulting in legal penalties and reputational damage.

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Mitigation Strategies

Upgrade CloudCmd to version 19.20.2 or later immediately. Ensure the `--root` parameter is set to a restricted directory and disable the config dialog if enabled. Review and apply path validation fixes in REST and markdown endpoints.

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