Vulnerability Management: Key Interview Questions And Best Practices

Vulnerability Management is the systematic process of identifying, evaluating, treating, and reporting security vulnerabilities in systems and software. It is essential for reducing cyber risks by addressing weaknesses before exploitation. Below are key interview questions, answers, and actionable steps to strengthen your vulnerability management strategy.

You Should Know:

1. Vulnerability Scanning Tools & Commands

Here are some widely used tools and commands for vulnerability scanning:

Nessus

Install Nessus on Kali Linux:

sudo apt update && sudo apt install -y nessus

Start Nessus service:
```
sudo systemctl start nessusd
```
Access via browser:
```
https://localhost:8834
```

OpenVAS (Open Vulnerability Assessment System)

Install OpenVAS on Kali Linux:

sudo apt update && sudo apt install openvas

Setup and configure OpenVAS:
```
sudo gvm-setup
```
Start OpenVAS:
```
sudo gvm-start
```
Access via browser:
```
https://127.0.0.1:9392
```

Qualys Cloud Platform

Run a basic vulnerability scan using Qualys API (Linux):

curl -X POST "https://qualysapi.qualys.com/api/2.0/fo/scan/" -d "action=launch&title=MyScan&ip=192.168.1.1" -u "username:password"

Nmap for Vulnerability Detection

Scan for open ports and services:
```
nmap -sV -A target_ip
```
Check for vulnerabilities using NSE scripts:
```
nmap --script=vuln target_ip
```

2. Prioritizing Vulnerabilities with CVSS Scores

Use the Common Vulnerability Scoring System (CVSS) to assess risk:
– Check a CVE’s CVSS score:

curl -s "https://cve.circl.lu/api/cve/CVE-2023-1234" | jq '.cvss'

– Filter vulnerabilities by severity (Critical/High/Medium/Low):

grep -E "Critical|High" vulnerabilities_report.csv

3. Automating Patch Management

Linux (Ubuntu/Debian)

Update all packages:
```
sudo apt update && sudo apt upgrade -y
```
Apply security patches only:
```
sudo unattended-upgrade --dry-run -d
```

Windows (PowerShell)

Check for missing patches:

Get-WindowsUpdate -Install -AcceptAll -AutoReboot

List installed updates:

Get-HotFix | Sort-Object InstalledOn -Descending

4. Handling False Positives

Exclude false positives in Nessus scans:

Edit scan policy → Preferences → Excluded Plugins

Verify vulnerabilities manually with Metasploit:

msfconsole
use auxiliary/scanner/http/title
set RHOSTS target_ip
run

What Undercode Say:

Effective vulnerability management requires continuous scanning, prioritization, and remediation. Automation (Nessus, OpenVAS, Nmap) and manual verification (Metasploit, manual testing) are key. Always patch critical vulnerabilities first and document false positives to refine future scans.

Prediction:

As cyber threats evolve, AI-driven vulnerability assessment tools will dominate, reducing false positives and improving remediation speed. Organizations must integrate threat intelligence feeds for real-time risk mitigation.

Expected Output:

Nessus scan reports
OpenVAS dashboard screenshots
Nmap vulnerability scan logs
Automated patch deployment logs

Relevant URLs:

References:

Reported By: Dharamveer Prasad – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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