Crucial Exams

Certified Ethical Hacker (CEH) Practice Question

While performing an internal vulnerability assessment, you first execute a non-credentialed OpenVAS scan against a group of CentOS servers, then repeat the scan using valid SSH credentials. The initial run reports several missing kernel patches, but the credentialed scan lists none of them. Which statement best explains this discrepancy?

  • The non-credentialed scan's use of TCP connect probes inherently overestimates patch requirements on Unix systems, inflating the results.

  • A failed SSH key-exchange during the second scan caused the scanner to discard all vulnerability data for the targets, explaining the empty report.

  • The credentialed scan suppresses kernel-level findings by default to avoid destabilizing production servers.

  • The credentialed scan logs in via SSH and queries the system's package database, so it can confirm installed kernel versions and eliminate banner-based false positives.

Certified Ethical Hacker (CEH)
System Hacking Phases and Attack Techniques
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