Creating High-Impact Nuclei Templates for Exploitable CVEs Using CVEmap

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Here’s a streamlined approach to identifying exploitable CVEs for Nuclei template creation using CVEmap, ensuring high-impact vulnerabilities are prioritized:

Key Criteria for Template Creation

  1. Public PoC Available (-poc): Ensures documented exploitation methods.
  2. CISA-KEV Listed (-k or -kev): Highlights actively exploited vulnerabilities.

3. Remotely Exploitable (`-re`): Targets network-based flaws.

  1. No Existing Nuclei Template (-t=false): Focuses on gaps in coverage.

You Should Know: Practical CVEmap Commands

1. Basic CVE Filtering

cvemap -k -poc -re -t=false -json | jq '.id' 

– Explanation: Filters CVEs with PoCs, remote exploitation, and no templates, outputting CVE IDs in JSON.

2. Export to File for Analysis

cvemap -kev -re -poc -o high_risk_cves.txt 

– Use Case: Saves results for manual review or automation.

3. Integrate with Nuclei for Template Generation

cvemap -k -re | awk '{print $1}' | xargs -I {} nuclei -template-generate -id {} 

– Workflow: Extracts CVE IDs and auto-generates Nuclei templates.

4. Monitor for New Exploitable CVEs

watch -n 3600 "cvemap -k -re -poc -t=false -l new_cves.log" 

– Purpose: Hourly scans for new high-risk CVEs.

What Undercode Say

  • Prioritize CISA-KEV: Focus on vulnerabilities actively weaponized in attacks.
  • Automate Template Creation: Use jq/awk to parse CVEmap output into Nuclei-compatible formats.
  • Validation: Test templates with nuclei -validate -t /path/to/template.yaml.
  • Linux/Win Commands for Debugging:
  • Linux: `grep -r “CVE-2023” /var/log/` (search logs for CVEs).
  • Windows: `Get-WinEvent -FilterHashtable @{LogName=’Security’; ID=4688}` (audit process execution).
  • Enhancements: Pair with `exploitdb` for PoC references (searchsploit <CVE-ID>).

Expected Output:

  • A curated list of CVEs (high_risk_cves.txt).
  • Validated Nuclei templates for immediate use.
  • Automated monitoring scripts for real-time CVE tracking.

References:

Reported By: Daniel Anyemedu – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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