wstg-info-09

Test ID

WSTG-INFO-09

Test Name

Fingerprint Web Application

Status

Note: This test case has been merged into WSTG-INFO-08: Fingerprint Web Application Framework in the latest OWASP WSTG version.

Consolidated Reference

For comprehensive guidance on web application fingerprinting, including:

• Application identification techniques
• Version detection methods
• Technology stack analysis
• Custom application identification

Please refer to: WSTG-INFO-08: Fingerprint Web Application Framework

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Additional Application-Specific Fingerprinting

While WSTG-INFO-08 covers framework fingerprinting, consider these additional checks for custom/bespoke applications:

Custom Application Indicators

• Unique URL patterns
• Custom HTTP headers
• Application-specific cookies
• Proprietary JavaScript libraries
• Custom error messages
• Unique HTML structures
• Versioning in source code comments

Version Detection Techniques

# Check for version in common locations
curl -s https://target.com/version
curl -s https://target.com/api/version
curl -s https://target.com/health
curl -s https://target.com/info
curl -s https://target.com/about

# Check for build info in HTML comments
curl -s https://target.com | grep -iE 'version|build|release'

# Check JavaScript for version strings
curl -s https://target.com/app.js | grep -iE 'version|v[0-9]+\.[0-9]+'

Documentation

When fingerprinting custom applications, document:

1. Application Name: Official name and any aliases
2. Version Information: If discoverable
3. Vendor/Developer: Who built the application
4. Deployment Date: If identifiable
5. Technology Stack: Underlying frameworks and libraries
6. Known CVEs: Research based on identified versions

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Checklist

[ ] See WSTG-INFO-08 checklist for comprehensive fingerprinting steps
[ ] Custom application identifiers documented
[ ] Version information gathered
[ ] Vendor/developer identified
[ ] Known vulnerabilities researched