Vulnerability Scan

The client requested a full vulnerability scanning process for the system network and operating system of a Carrier VoIP Provisioning Portal Server, including:

• Test methodology
• Test procedure
• Summary of identified issues
• Recommended solutions

• Test methodology:
  • Testing Approach: White box
  • Test Category: Web Application and OS Security
  • Test Scope: Web UI, Underlying OS, Network Exposure
  • Tools Used: Nessus Professional
• Test procedure:
  • Preparation Phase
    • Reviewed system architecture, deployment diagram, firewall policies, and patch history.
    • White-box inputs included admin credentials, OS type (Linux), installed software list, and version history.
  • Network and Host Discovery
    • Used Nessus to enumerate open ports, active services, and network-exposed endpoints.
    • Mapped potential attack surfaces, including auxiliary services.
  • Vulnerability Scanning
    • Executed in-depth scans targeting:
    • OS-level known vulnerabilities (CVEs)
    • Middleware and application server components (Apache, Tomcat, etc.)
    • TLS/SSL configurations
    • Authentication mechanisms and session management
  • Report Generation & Analysis
    • Generated categorized reports (Critical, High, Medium, Low).
    • Validated key findings through manual inspection to eliminate false positives.
  • Risk Assessment
    • Evaluated the business impact of discovered issues.
    • Provided actionable recommendations with prioritized remediation steps.

• Proactive Threat Identification: Uncovered exploitable CVEs before attackers could act.
• Improved Compliance: Helped the client align with telecom security standards (ISO 27001, ETSI EN 303 645).
• Secured Data in Transit: Recommended TLS enhancements that hardened the system against MITM attacks.
• Prevented RCE Attack Path: Early detection of the Log4j vulnerability likely prevented a severe breach.