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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/bagelhole/devops-security-agent-skills --skill vulnerability-scanning- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads vulnerability-scanning automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Vulnerability Scanning
Identify and prioritize security vulnerabilities across infrastructure and applications.
When to Use This Skill
Use this skill when:
- Performing security assessments
- Implementing vulnerability management programs
- Meeting compliance requirements
- Triaging and prioritizing remediation
- Scanning infrastructure for known CVEs
Prerequisites
- Access to scanning tools
- Network access to targets
- Appropriate authorization
Vulnerability Scanning Tools
| Tool | Type | Best For |
|---|---|---|
| Nessus | Commercial | Enterprise scanning |
| OpenVAS | Open Source | Free alternative |
| Qualys | Cloud SaaS | Large scale |
| Nexpose/InsightVM | Commercial | Asset management |
| Nuclei | Open Source | Template-based |
OpenVAS Setup
Docker Deployment
# Run OpenVAS container
docker run -d --name openvas \
-p 443:443 \
-v openvas-data:/data \
greenbone/openvas-scanner
# Access web UI at https://localhost
# Default credentials: admin/admin
Scanning Commands
# Create target
omp -u admin -w admin --xml='<create_target>
<name>Web Servers</name>
<hosts>192.168.1.0/24</hosts>
</create_target>'
# Create task
omp -u admin -w admin --xml='<create_task>
<name>Weekly Scan</name>
<target id="target-uuid"/>
<config id="daba56c8-73ec-11df-a475-002264764cea"/>
</create_task>'
# Start task
omp -u admin -w admin --xml='<start_task task_id="task-uuid"/>'
# Get results
omp -u admin -w admin --xml='<get_results task_id="task-uuid"/>'
Nessus
API Usage
import requests
class NessusScanner:
def __init__(self, url, access_key, secret_key):
self.url = url
self.headers = {
'X-ApiKeys': f'accessKey={access_key}; secretKey={secret_key}',
'Content-Type': 'application/json'
}
def create_scan(self, name, targets, template='basic'):
"""Create a new scan."""
templates = self.get('/editor/scan/templates')
template_uuid = next(
t['uuid'] for t in templates['templates']
if t['name'] == template
)
payload = {
'uuid': template_uuid,
'settings': {
'name': name,
'text_targets': targets,
'enabled': True
}
}
return self.post('/scans', payload)
def launch_scan(self, scan_id):
"""Start a scan."""
return self.post(f'/scans/{scan_id}/launch')
def get_results(self, scan_id):
"""Get scan results."""
return self.get(f'/scans/{scan_id}')
def export_report(self, scan_id, format='pdf'):
"""Export scan report."""
payload = {'format': format}
response = self.post(f'/scans/{scan_id}/export', payload)
file_id = response['file']
# Wait for export
while True:
status = self.get(f'/scans/{scan_id}/export/{file_id}/status')
if status['status'] == 'ready':
break
time.sleep(5)
return self.get(f'/scans/{scan_id}/export/{file_id}/download')
def get(self, path):
response = requests.get(f'{self.url}{path}', headers=self.headers, verify=False)
return response.json()
def post(self, path, data=None):
response = requests.post(f'{self.url}{path}', json=data, headers=self.headers, verify=False)
return response.json()
# Usage
scanner = NessusScanner('https://nessus:8834', 'access-key', 'secret-key')
scan = scanner.create_scan('Weekly Infrastructure Scan', '10.0.0.0/24')
scanner.launch_scan(scan['scan']['id'])
Nuclei
Installation
# Install nuclei
go install -v github.com/projectdiscovery/nuclei/v3/cmd/nuclei@latest
# Or download binary
wget https://github.com/projectdiscovery/nuclei/releases/latest/download/nuclei_linux_amd64.zip
unzip nuclei_linux_amd64.zip
Basic Scanning
# Update templates
nuclei -update-templates
# Scan single target
nuclei -u https://example.com
# Scan multiple targets
nuclei -l targets.txt
# Scan with specific templates
nuclei -u https://example.com -t cves/
nuclei -u https://example.com -t vulnerabilities/
# Scan with severity filter
nuclei -u https://example.com -s critical,high
# Output formats
nuclei -u https://example.com -o results.txt
nuclei -u https://example.com -json -o results.json
Custom Templates
# custom-check.yaml
id: custom-admin-panel
info:
name: Admin Panel Detection
author: security-team
severity: info
tags: recon,panel
requests:
- method: GET
path:
- "{{BaseURL}}/admin"
- "{{BaseURL}}/administrator"
- "{{BaseURL}}/wp-admin"
matchers-condition: or
matchers:
- type: word
words:
- "admin"
- "login"
condition: and
- type: status
status:
- 200
- 301
- 302
CVSS Scoring
Severity Levels
| Score | Rating | Response Time |
|---|---|---|
| 9.0-10.0 | Critical | 24 hours |
| 7.0-8.9 | High | 7 days |
| 4.0-6.9 | Medium | 30 days |
| 0.1-3.9 | Low | 90 days |
Prioritization Factors
prioritization_criteria:
critical_factors:
- Internet-facing systems
- Systems with sensitive data
- Active exploitation in the wild
- Authentication bypass
high_factors:
- Remote code execution
- Privilege escalation
- Data exfiltration risk
context_adjustments:
- Compensating controls in place (-1)
- No direct exposure (-1)
- Critical business system (+1)
- Compliance requirement (+1)
Vulnerability Management Process
Workflow
vulnerability_workflow:
discovery:
- Run scheduled scans
- Import third-party findings
- Correlate with asset inventory
analysis:
- Validate findings
- Remove false positives
- Assess business impact
- Prioritize by risk score
remediation:
- Assign to owners
- Track SLA compliance
- Verify fixes
- Document exceptions
reporting:
- Executive summaries
- Technical details
- Trend analysis
- Compliance metrics
Tracking Template
## Vulnerability Ticket
**ID:** VULN-2024-001
**CVE:** CVE-2024-12345
**CVSS:** 9.8 (Critical)
**Affected System:** web-server-01
### Description
Remote code execution vulnerability in Apache Struts.
### Impact
Attacker can execute arbitrary code on the server.
### Remediation
1. Update Apache Struts to version 2.5.33
2. Apply WAF rule as temporary mitigation
### Timeline
- Discovered: 2024-01-15
- SLA Due: 2024-01-16
- Remediated: 2024-01-15
### Evidence
- Scan report: [link]
- Screenshot: [link]
CI/CD Integration
GitHub Actions
name: Vulnerability Scan
on:
schedule:
- cron: '0 2 * * *'
push:
branches: [main]
jobs:
scan:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Run Nuclei
uses: projectdiscovery/nuclei-action@main
with:
target: https://example.com
templates: cves/
output: nuclei-results.txt
- name: Check for critical findings
run: |
if grep -q "critical" nuclei-results.txt; then
echo "Critical vulnerabilities found!"
exit 1
fi
- name: Upload results
uses: actions/upload-artifact@v4
with:
name: vulnerability-report
path: nuclei-results.txt
Compliance Scanning
CIS Benchmark Scan
# Using OpenSCAP
oscap xccdf eval \
--profile xccdf_org.ssgproject.content_profile_cis \
--results results.xml \
--report report.html \
/usr/share/xml/scap/ssg/content/ssg-ubuntu2204-ds.xml
PCI DSS Scanning
pci_scan_requirements:
quarterly:
- External vulnerability scan (ASV)
- Internal vulnerability scan
after_changes:
- Significant infrastructure changes
- New system deployments
passing_criteria:
- No vulnerabilities rated 4.0+ (CVSS)
- False positives documented
- Scan completed within 90 days
Common Issues
Issue: False Positives
Problem: Scanner reports non-existent vulnerabilities Solution: Validate manually, tune scanner, maintain exception list
Issue: Incomplete Coverage
Problem: Not all assets scanned Solution: Update asset inventory, verify credentials, check network access
Issue: Scan Impact
Problem: Scans affecting production systems Solution: Schedule during maintenance windows, use authenticated scans
Best Practices
- Maintain accurate asset inventory
- Schedule regular scan cadence
- Validate findings before remediation
- Track metrics (MTTR, aging)
- Integrate with ticketing systems
- Document exceptions properly
- Use risk-based prioritization
- Automate where possible
Related Skills
- sast-scanning - Code analysis
- container-scanning - Container security
- cis-benchmarks - Compliance benchmarks
FAQ
What does the vulnerability-scanning skill do?
Scan systems and dependencies for CVEs and security vulnerabilities. Use tools like Nessus, OpenVAS, and Qualys to identify and prioritize vulnerabilities. Use when performing security assessments, compliance scanning, or vulnerability management.
How do I install vulnerability-scanning?
Run npx skills add https://github.com/bagelhole/devops-security-agent-skills --skill vulnerability-scanning in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/vulnerability-scanning/ (personal) or .claude/skills/vulnerability-scanning/ (project).
Which AI agents can use vulnerability-scanning?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is vulnerability-scanning safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains vulnerability-scanning?
It is published by bagelhole in bagelhole/devops-security-agent-skills. It has 430 recorded installs.
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