Working Procedure of Vulnerability Scanning

The process of Vulnerability Scanning involves multiple systematic steps. All of them are explained below in brief:

  1. Finding and Creating an Asset Inventory: The first step of the scanning is to identify the assets of the system that will be scanned and then their details such as the Operating System, Network, Servers, Ports, Workstation, etc are mapped within the scope of the scanning.
  2. Initiating the Scanning: The next step is the initiation step, here the scanning tool i.e. scanner starts scanning the assets that were marked and gathered in the previous step for the known vulnerabilities. Various scanning techniques like Port Scanning, Service Identification Vulnerability detection, etc are being used by them.
  3. Detection of Vulnerability: Now the scanner detects vulnerabilities by comparing the characteristics of the target asset with a database of known vulnerabilities stored in them. If the match is found, it means that there is a known vulnerability present in that particular asset. The vulnerabilities database is regularly updated so that it doesn’t become outdated and can detect updated vulnerabilities too.
  4. Risk Assessment: After detection of vulnerability, the scanner assigns a score to each of the systems where vulnerability has been detected, this score signifies the level of risk the asset currently has. This number helps in prioritizing the mitigation process as those with higher risks are considered earlier. The assigned number is calculated and assigned based on the impact of that vulnerability and how much it can be exploited by the hacker.
  5. Report Generation: A detailed report is generated at the last depending on the explored vulnerabilities, their severity, and some recommendations to remove them. This report is useful for understanding the entire security scenario of the system or the applications by the security teams, using this report they can plan the next process which is to mitigate those vulnerabilities.
  6. Remediation Planning: Based on the Vulnerability Report, the security team of the organization develops the step-by-step process to mitigate the identified vulnerability. This may include applying and developing the patches, reconfiguring the settings of those applications, and implementing additional security controls.

What is Vulnerability Scanning in Security Testing?

Detecting and dealing with system vulnerabilities is the most important thing for any organization or systems administrator. Unauthorized hackers may exploit these flaws to obtain access to the system and abuse it in their ways. Detecting and mitigating vulnerabilities in different systems, applications, or network devices is done step-by-step through vulnerability scanning, one of the security scan domains. In this article we will take a closer look at Vulnerability Scanning explaining its importance (why it’s necessary), giving a brief overview of how it works, discussing its types and more common examples of vulnerability scanning results.

Table of Content

  • Importance of Running a Vulnerability Scan
  • Types of Vulnerability Scanning
  • Vulnerability Scanning Process
  • Working Procedure of Vulnerability Scanning
  • Common Vulnerabilities Found in Vulnerability Scanning
  • Vulnerability Scanning Best Practices
  • Conclusion

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Types of Vulnerability Scanning

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Working Procedure of Vulnerability Scanning

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Common Vulnerabilities Found in Vulnerability Scanning

Outdated Software and Patch Levels: Failure to update software leaves vulnerabilities unaddressed, risking exploitation by attackers. Default Credentials: Using default usernames and passwords increases the risk of unauthorized access to systems and applications. Missing Security Updates: Neglecting to apply security updates exposes systems to known vulnerabilities that could be exploited by attackers. SQL Injection (SQLi): Exploiting vulnerabilities in database queries to manipulate or retrieve unauthorized information from a database. Cross-Site Scripting (XSS): Injecting malicious scripts into web pages, which are then executed by unsuspecting users’ browsers. Cross-Site Request Forgery (CSRF): Forcing users to perform unwanted actions without their consent by exploiting their authenticated sessions on a different site. File and Directory Permissions: Inadequate or misconfigured file and directory permissions may allow unauthorized access to sensitive data or system files. Open Ports and Services: Unnecessary open ports and services increase the attack surface and expose systems to potential exploits if not properly secured....

Vulnerability Scanning vs Penetration Testing

Parameters Vulnerability Scanning Penetration Testing Automation It requires minimal human intervention. It is highly manual and involves skilled security professionals. Time and Cost It is faster and more economical. As more manual labor is required, it takes longer and costs more money. Scope It is broad, covering a large variety of network assets. It is targeted to particular systems, apps, or parts, narrow and concentrated. Depth of Analysis Analyzed broadly but superficially, pointing out several different weaknesses without taking any action. Thorough examination with an emphasis on leveraging weaknesses to gauge their effects. Frequency Conducted Regularly Performed Periodically...

Vulnerability Scanning Best Practices

Define Clear Scope: Define concise goals and objectives of the scanning process. It helps in understanding the outcome of the scanning, the purpose of the scanning, and the scope of the scanning, by taking into consideration risk management and organizational priorities. Regular Update of the Vulnerability Database: It is recommended to update the in-built vulnerability database of the scanning tool so that it can detect newer types of vulnerabilities and doesn’t become useless due to no update. Asset Inventory: Maintain a proper asset inventory, this should include all the system, network devices, and applications that need to be scanned regularly. This helps in carrying out the scanning process faster as the assets are already identified and placed together ready to be scanned. Regular Scanning: Perform regular scanning to prevent the assets from being compromised to new vulnerabilities. Regular Scanning also helps to identify emerging vulnerabilities, track the result of the remediation effort, and ensure ongoing security. Prioritize Remediation: Remedy of the vulnerabilities found in the previous scans need to be prioritized based on their severity. Focusing on high-severity issues is a must to reduce the chance of the exploitation of the vulnerabilities and to mitigate the most significant security threats. Review Scan Results Thoroughly: The scan results need to be reviewed thoroughly to understand the condition of the assets. Understand the severity of the threats present in the asset, examine the potential impact, and verify the accuracy of the result....

Conclusion

In conclusion. vulnerability scanning plays a crucial role in the field of security testing. This process involves systematic steps, including clear scopes, maintaining an up-to-date asset inventory, regularly scanning the assets for vulnerability, and most importantly updating the vulnerability database regularly to detect newer types of vulnerabilities. Best practices of vulnerability scanning involve defining the clear scope, regularly updating the vulnerability database, maintaining the asset inventory, conducting scanning regularly or at a certain interval in a periodic manner, prioritization the remedy of the vulnerabilities found, and reviewing the scan results thoroughly. Continuous improvement and adaptation to newer threats ensure the organization or system’s security....

FAQs related to Vulnerability Scanning in Security Testing

Q.1 Can all kinds of security concerns be found by vulnerability scans?...