# 10 Vulnerability Scanning Tools: Commercial and Open Source Options ## What Are Vulnerability Scanning Tools? Vulnerability scanning tools are software applications designed to assess computers, networks, or applications for vulnerabilities and other security weaknesses. These tools automate the process of identifying, quantifying, and prioritizing (or ranking) weaknesses in a system, which can range from software bugs, misconfigurations, outdated software versions, to weak passwords and encryption methods. By systematically scanning for these weaknesses, vulnerability scanning tools help organizations understand their exposure to potential security threats and provide a pathway to remediate identified issues, thereby enhancing the security posture. Vulnerability scanning tools are important because they promote proactive security measures. Through regular scans, organizations can keep abreast of new and emerging threats, patch vulnerabilities before they are exploited, and ensure compliance with regulatory requirements. The dynamic nature of IT environments, with continuous software updates, new deployments, and changing configurations, necessitates an ongoing, systematic approach to vulnerability management. This is part of a series of articles about [vulnerability assessment](https://www.cycognito.com/learn/vulnerability-assessment/). ## Vulnerability Scanning vs. Dynamic Vulnerability Testing **Vulnerability scanning** is an automated process that identifies and reports on known vulnerabilities within a network or application. It relies on a database of known vulnerabilities and checks systems against this database to find matches. This approach is broad and general, designed to catch a wide range of potential issues based on known vulnerabilities. **Dynamic vulnerability testing** is a more interactive process, often conducted by dynamic application security testing (DAST) systems. Dynamic testing involves executing real-world attacks against live systems or applications to identify vulnerabilities that could be exploited. Unlike the passive nature of vulnerability scans, dynamic testing actively simulates an attacker’s actions to discover vulnerabilities that require specific conditions to be exploitable. Thus, dynamic vulnerability scanning complements vulnerability scanning by identifying issues that only appear during the execution of an application. Advanced vulnerability scanning solutions are introducing dynamic testing capabilities, allowing them to identify a broader range of security weaknesses. ## Key Features of Vulnerability Scanning Tools ### Comprehensive Vulnerability Database A core feature of effective vulnerability scanning tools is their reliance on a vulnerability database. This database contains information about known security vulnerabilities, including their severity, impact, and the conditions under which they can be exploited. The quality and breadth of this database significantly influence the scanner’s ability to detect risks. Regular updates are crucial, as they ensure the tool remains effective against emerging threats and keeps pace with the latest security research and disclosures. ### Customizable Scan Profiles Customizable scan profiles allow users to tailor the scanning process to their specific needs. This flexibility enables organizations to focus on areas of particular concern or compliance requirements, and adapt scans to specific application requirements. Users can define what to scan, how deep the scan should go, and the types of vulnerabilities to prioritize. This customization helps minimize disruptions to operational systems and reduces false positives, making the scanning process more efficient and less intrusive. ### Detailed Reporting and Analytics After scanning, the tool provides detailed reports and analytics, offering insights into the vulnerabilities found. These reports are essential for understanding the risk landscape, prioritizing remediation efforts, and tracking progress over time. They typically include metrics on vulnerability severity, affected systems, and recommended actions to mitigate risks. Furthermore, advanced tools offer analytics capabilities to identify trends and patterns in the data, enabling organizations to anticipate potential security issues before they become critical. This proactive approach can significantly reduce the risk of breaches. ### Credential and Non-Credentialed Scans Credential and non-credentialed scans represent two approaches to vulnerability scanning: - **Credential scans** require login information, allowing the tool to perform its examination by accessing systems as a legitimate user. This approach can uncover vulnerabilities that would not be visible externally, providing a deeper insight into the security posture of the scanned systems. - **Non-credentialed scans** do not use login credentials and assess systems from an outsider’s perspective. This method is useful for identifying vulnerabilities that could be exploited by an attacker without internal access. ## Tips from the Expert Rob Gurzeev, CEO and Co-Founder of CyCognito, has led the development of offensive security solutions for both the private sector and intelligence agencies. Here are tips that can help you better leverage vulnerability scanning tools: - **Automate remediation workflows**: Use automated workflows that trigger specific actions based on the severity of vulnerabilities detected. This can include auto-generating tickets in your ITSM system, pushing patches, or isolating affected systems to reduce the time from detection to mitigation. - **Leverage scan frequency optimization**: Don’t stick to a single scan frequency. Adapt the scanning frequency based on asset criticality, exposure, and historical vulnerability trends. - **Correlate with configuration management databases (CMDB)**: Integrate vulnerability scanning tools with your CMDB to ensure all assets are accounted for in scans. This integration helps prevent the “shadow IT” problem. - **Implement differential scanning**: Use differential scanning techniques that focus on changes since the last scan. This reduces scan time and resource consumption, while ensuring new vulnerabilities introduced by recent changes are quickly identified. - **Utilize post-scan risk assessments**: After vulnerability scans, perform a comprehensive risk assessment that considers factors beyond CVSS scores, such as business impact, exploitability in the context of your specific environment, and compensating controls already in place. ## Commercial Vulnerability Scanning Tools ### 1. CyCognito The CyCognito platform addresses today’s vulnerability management requirements by taking an automated multi-faceted approach to identifying and remediating critical issues based on their business impact rather than focusing on the generic severity of the threat alone. This approach significantly reduces the burden of tedious, error-prone and costly processes. ### 2. Tenable Tenable provides visibility into on-premises and cloud-based assets. The solution includes the Nessus scanner, which performs deep inspection of networks to uncover vulnerabilities. ### 3. Qualys Qualys is a cloud-based vulnerability scanning and management platform that provides scalable, in-depth analysis of vulnerabilities across all IT assets. ### 4. Rapid7 Rapid7’s InsightVM is a vulnerability management solution that stands out for its live monitoring and advanced analytics capabilities. ### 5. Acunetix by Invicti Acunetic, now owned by Invicti, offers an automated vulnerability scanner for web applications and websites. ### 6. Burp Suite Burp Suite by PortSwigger is a solution for web application security testing, typically used by security professionals and penetration testers. ### 7. Frontline VM Frontline VM, a product of Digital Defense, Inc., is a cloud-based vulnerability management solution that provides advanced analytics capabilities. ## Open Source Vulnerability Scanning Tools ### 8. OpenVAS OpenVAS (Open Vulnerability Assessment System) is a free and open source vulnerability scanner. ### 9. OWASP ZAP The OWASP Zed Attack Proxy (ZAP) is an open-source web application security scanner developed by the OWASP Foundation. ### 10. Nmap Nmap (Network Mapper) is a free and open-source tool for network discovery and security auditing. ## Conclusion In conclusion, vulnerability scanning tools are essential for identifying, assessing, and mitigating security weaknesses in networks, applications, and systems. These tools, whether commercial or open-source, offer a range of capabilities from comprehensive vulnerability databases and customizable scanning profiles to dynamic testing and detailed reporting. By leveraging these tools, organizations can significantly enhance their security posture, reduce their exposure to threats, and comply with regulatory requirements. Regular use of vulnerability scanning tools is a proactive step towards maintaining a robust security framework in the face of evolving cyber threats.