Web vulnerability scanning in Cybersecurity - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to identify the tool used for scanning web vulnerabilities.

Cybersecurity

scanner = "[1]"  # Popular open-source web vulnerability scanner

Drag options to blanks, or click blank then click option'

AWireshark

BNmap

CMetasploit

DNikto

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing Nikto with Nmap which is a network scanner.

Nikto is a popular open-source web vulnerability scanner used to detect security issues in web servers.

2fill in blank

medium

Complete the code to specify the type of vulnerability scanning that tests web applications for security flaws.

Cybersecurity

scan_type = "[1]"  # Scanning focused on web apps

Drag options to blanks, or click blank then click option'

AWeb vulnerability scanning

BNetwork scanning

CPort scanning

DMalware scanning

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing network scanning which is broader and not specific to web apps.

Web vulnerability scanning focuses on finding security weaknesses in web applications.

3fill in blank

hard

Fix the error in the code to correctly represent a common vulnerability scanner's output format.

Cybersecurity

report_format = '[1]'  # Format used for detailed vulnerability reports

Drag options to blanks, or click blank then click option'

Ahtml

Bexe

Ctxt

Dbin

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'exe' or 'bin' which are not report formats.

Most web vulnerability scanners generate reports in HTML format for easy reading in browsers.

4fill in blank

hard

Fill both blanks to complete the code that filters vulnerabilities by severity and type.

Cybersecurity

filtered_vulns = [v for v in vulnerabilities if v.severity [1] 'High' and v.type [2] 'SQL Injection']

Drag options to blanks, or click blank then click option'

A==

B!=

C>=

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using inequality operators which would exclude desired vulnerabilities.

The code filters vulnerabilities where severity is exactly 'High' and type is exactly 'SQL Injection'.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps vulnerability names to their risk scores if the score is above 7.

Cybersecurity

high_risk = {v.[1]: v.[2] for v in vuln_list if v.[3] > 7}

Drag options to blanks, or click blank then click option'

Aname

Brisk_score

Dseverity

Attempts:

3 left

💡 Hint

Common Mistakes

Using severity instead of risk_score for filtering or values.

This comprehension creates a dictionary with vulnerability names as keys and their risk scores as values, including only those with a risk score greater than 7.

Practice

1. What is the main purpose of web vulnerability scanning?

easy

A. To increase website traffic

B. To improve website design

C. To find security weaknesses in websites

D. To create new web pages

Solution

1. Step 1: Understand the goal of vulnerability scanning

   Web vulnerability scanning is used to detect security issues that could be exploited by attackers.

2. Step 2: Compare options to the goal

   Only To find security weaknesses in websites matches the goal of finding security weaknesses.

3. Final Answer:

   To find security weaknesses in websites -> Option C

4. Quick Check:

   Purpose of scanning = Find weaknesses [OK]

Hint: Focus on security goals, not design or traffic [OK]

Common Mistakes:

• Confusing scanning with website design
• Thinking scanning increases traffic
• Assuming scanning creates content

2. Which of the following is a correct step in performing a web vulnerability scan?

easy

A. Scanning regularly and after changes

B. Scanning only after major website changes

C. Ignoring scan results

D. Disabling security tools during scan

Solution

1. Step 1: Identify best practices for scanning

   Regular scanning and scanning after changes help catch new vulnerabilities early.

2. Step 2: Evaluate options

   Only Scanning regularly and after changes correctly describes this practice.

3. Final Answer:

   Scanning regularly and after changes -> Option A

4. Quick Check:

   Best practice = Regular scans [OK]

Hint: Scan often and after updates to catch issues [OK]

Common Mistakes:

• Skipping scans after updates
• Ignoring scan results
• Disabling security tools

3. A web vulnerability scanner reports the following issues: SQL Injection, Cross-Site Scripting (XSS), and outdated software versions. What should be the next step?

medium

A. Ignore the report and continue using the website

B. Delete the website to prevent attacks

C. Disable the scanner to avoid false alarms

D. Fix the reported vulnerabilities to secure the website

Solution

1. Step 1: Understand the meaning of reported issues

   SQL Injection and XSS are serious vulnerabilities that attackers can exploit. Outdated software can have known security flaws.

2. Step 2: Determine the correct action

   The correct response is to fix these vulnerabilities to protect the website and users.

3. Final Answer:

   Fix the reported vulnerabilities to secure the website -> Option D

4. Quick Check:

   Fix vulnerabilities = Secure website [OK]

Hint: Always fix vulnerabilities found by scans [OK]

Common Mistakes:

• Ignoring reports
• Deleting website unnecessarily
• Disabling scanners

4. You ran a web vulnerability scan but the report shows no vulnerabilities, yet you suspect there are issues. What could be a reason for this?

medium

A. The scanner was not configured properly

B. The website is perfectly secure

C. The scan was done too frequently

D. The scanner always misses vulnerabilities

Solution

1. Step 1: Analyze why a scan might miss vulnerabilities

   If the scanner is not set up correctly, it may not test all areas or types of vulnerabilities.

2. Step 2: Evaluate other options

   The website is perfectly secure is unlikely if issues are suspected. The scan was done too frequently is unrelated. The scanner always misses vulnerabilities is incorrect because scanners do not always miss vulnerabilities.

3. Final Answer:

   The scanner was not configured properly -> Option A

4. Quick Check:

   Misconfiguration = Missed vulnerabilities [OK]

Hint: Check scanner settings if no issues found but suspected [OK]

Common Mistakes:

• Assuming website is perfect
• Blaming scan frequency
• Thinking scanners always fail

5. A company wants to automate web vulnerability scanning for multiple websites daily. Which approach best balances thoroughness and resource use?

hard

A. Run full scans on all websites every day

B. Run quick scans daily and full scans weekly

C. Run scans only when a website is updated

D. Run scans manually when issues are reported

Solution

1. Step 1: Understand scanning trade-offs

   Full scans are thorough but resource-heavy; quick scans are lighter but less detailed.

2. Step 2: Evaluate options for balance

   Run quick scans daily and full scans weekly uses quick scans daily to catch urgent issues and full scans weekly for depth, balancing resources and security.

3. Final Answer:

   Run quick scans daily and full scans weekly -> Option B

4. Quick Check:

   Balance thoroughness and resources = Run quick scans daily and full scans weekly [OK]

Hint: Use quick daily and full weekly scans for efficiency [OK]

Common Mistakes:

• Running full scans daily wastes resources
• Scanning only after updates misses risks
• Manual scans delay detection