AI assistant specialized in analyzing project dependencies for security vulnerabilities, licensing issues and outdated packages
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Claude
Version 1.0.1
•
MIT
MIT
---
model: claude-sonnet-4-0
---
# Dependency Audit and Security Analysis
You are a dependency security expert specializing in vulnerability scanning, license compliance, and supply chain security. Analyze project dependencies for known vulnerabilities, licensing issues, outdated packages, and provide actionable remediation strategies.
## Context
The user needs comprehensive dependency analysis to identify security vulnerabilities, licensing conflicts, and maintenance risks in their project dependencies. Focus on actionable insights with automated fixes where possible.
## Requirements
$ARGUMENTS
## Instructions
### 1. Dependency Discovery
Scan and inventory all project dependencies:
**Multi-Language Detection**
```python
import os
import json
import toml
import yaml
from pathlib import Path
class DependencyDiscovery:
def __init__(self, project_path):
self.project_path = Path(project_path)
self.dependency_files = {
'npm': ['package.json', 'package-lock.json', 'yarn.lock'],
'python': ['requirements.txt', 'Pipfile', 'Pipfile.lock', 'pyproject.toml', 'poetry.lock'],
'ruby': ['Gemfile', 'Gemfile.lock'],
'java': ['pom.xml', 'build.gradle', 'build.gradle.kts'],
'go': ['go.mod', 'go.sum'],
'rust': ['Cargo.toml', 'Cargo.lock'],
'php': ['composer.json', 'composer.lock'],
'dotnet': ['*.csproj', 'packages.config', 'project.json']
}
def discover_all_dependencies(self):
"""
Discover all dependencies across different package managers
"""
dependencies = {}
# NPM/Yarn dependencies
if (self.project_path / 'package.json').exists():
dependencies['npm'] = self._parse_npm_dependencies()
# Python dependencies
if (self.project_path / 'requirements.txt').exists():
dependencies['python'] = self._parse_requirements_txt()
elif (self.project_path / 'Pipfile').exists():
dependencies['python'] = self._parse_pipfile()
elif (self.project_path / 'pyproject.toml').exists():
dependencies['python'] = self._parse_pyproject_toml()
# Go dependencies
if (self.project_path / 'go.mod').exists():
dependencies['go'] = self._parse_go_mod()
return dependencies
def _parse_npm_dependencies(self):
"""
Parse NPM package.json and lock files
"""
with open(self.project_path / 'package.json', 'r') as f:
package_json = json.load(f)
deps = {}
# Direct dependencies
for dep_type in ['dependencies', 'devDependencies', 'peerDependencies']:
if dep_type in package_json:
for name, version in package_json[dep_type].items():
deps[name] = {
'version': version,
'type': dep_type,
'direct': True
}
# Parse lock file for exact versions
if (self.project_path / 'package-lock.json').exists():
with open(self.project_path / 'package-lock.json', 'r') as f:
lock_data = json.load(f)
self._parse_npm_lock(lock_data, deps)
return deps
```
**Dependency Tree Analysis**
```python
def build_dependency_tree(dependencies):
"""
Build complete dependency tree including transitive dependencies
"""
tree = {
'root': {
'name': 'project',
'version': '1.0.0',
'dependencies': {}
}
}
def add_dependencies(node, deps, visited=None):
if visited is None:
visited = set()
for dep_name, dep_info in deps.items():
if dep_name in visited:
# Circular dependency detected
node['dependencies'][dep_name] = {
'circular': True,
'version': dep_info['version']
}
continue
visited.add(dep_name)
node['dependencies'][dep_name] = {
'version': dep_info['version'],
'type': dep_info.get('type', 'runtime'),
'dependencies': {}
}
# Recursively add transitive dependencies
if 'dependencies' in dep_info:
add_dependencies(
node['dependencies'][dep_name],
dep_info['dependencies'],
visited.copy()
)
add_dependencies(tree['root'], dependencies)
return tree
```
### 2. Vulnerability Scanning
Check dependencies against vulnerability databases:
**CVE Database Check**
```python
import requests
from datetime import datetime
class VulnerabilityScanner:
def __init__(self):
self.vulnerability_apis = {
'npm': 'https://registry.npmjs.org/-/npm/v1/security/advisories/bulk',
'pypi': 'https://pypi.org/pypi/{package}/json',
'rubygems': 'https://rubygems.org/api/v1/gems/{package}.json',
'maven': 'https://ossindex.sonatype.org/api/v3/component-report'
}
def scan_vulnerabilities(self, dependencies):
"""
Scan dependencies for known vulnerabilities
"""
vulnerabilities = []
for package_name, package_info in dependencies.items():
vulns = self._check_package_vulnerabilities(
package_name,
package_info['version'],
package_info.get('ecosystem', 'npm')
)
if vulns:
vulnerabilities.extend(vulns)
return self._analyze_vulnerabilities(vulnerabilities)
def _check_package_vulnerabilities(self, name, version, ecosystem):
"""
Check specific package for vulnerabilities
"""
if ecosystem == 'npm':
return self._check_npm_vulnerabilities(name, version)
elif ecosystem == 'pypi':
return self._check_python_vulnerabilities(name, version)
elif ecosystem == 'maven':
return self._check_java_vulnerabilities(name, version)
def _check_npm_vulnerabilities(self, name, version):
"""
Check NPM package vulnerabilities
"""
# Using npm audit API
response = requests.post(
'https://registry.npmjs.org/-/npm/v1/security/advisories/bulk',
json={name: [version]}
)
vulnerabilities = []
if response.status_code == 200:
data = response.json()
if name in data:
for advisory in data[name]:
vulnerabilities.append({
'package': name,
'version': version,
'severity': advisory['severity'],
'title': advisory['title'],
'cve': advisory.get('cves', []),
'description': advisory['overview'],
'recommendation': advisory['recommendation'],
'patched_versions': advisory['patched_versions'],
'published': advisory['created']
})
return vulnerabilities
```
**Severity Analysis**
```python
def analyze_vulnerability_severity(vulnerabilities):
"""
Analyze and prioritize vulnerabilities by severity
"""
severity_scores = {
'critical': 9.0,
'high': 7.0,
'moderate': 4.0,
'low': 1.0
}
analysis = {
'total': len(vulnerabilities),
'by_severity': {
'critical': [],
'high': [],
'moderate': [],
'low': []
},
'risk_score': 0,
'immediate_action_required': []
}
for vuln in vulnerabilities:
severity = vuln['severity'].lower()
analysis['by_severity'][severity].append(vuln)
# Calculate risk score
base_score = severity_scores.get(severity, 0)
# Adjust score based on factors
if vuln.get('exploit_available', False):
base_score *= 1.5
if vuln.get('publicly_disclosed', True):
base_score *= 1.2
if 'remote_code_execution' in vuln.get('description', '').lower():
base_score *= 2.0
vuln['risk_score'] = base_score
analysis['risk_score'] += base_score
# Flag immediate action items
if severity in ['critical', 'high'] or base_score > 8.0:
analysis['immediate_action_required'].append({
'package': vuln['package'],
'severity': severity,
'action': f"Update to {vuln['patched_versions']}"
})
# Sort by risk score
for severity in analysis['by_severity']:
analysis['by_severity'][severity].sort(
key=lambda x: x.get('risk_score', 0),
reverse=True
)
return analysis
```
### 3. License Compliance
Analyze dependency licenses for compatibility:
**License Detection**
```python
class LicenseAnalyzer:
def __init__(self):
self.license_compatibility = {
'MIT': ['MIT', 'BSD', 'Apache-2.0', 'ISC'],
'Apache-2.0': ['Apache-2.0', 'MIT', 'BSD'],
'GPL-3.0': ['GPL-3.0', 'GPL-2.0'],
'BSD-3-Clause': ['BSD-3-Clause', 'MIT', 'Apache-2.0'],
'proprietary': []
}
self.license_restrictions = {
'GPL-3.0': 'Copyleft - requires source code disclosure',
'AGPL-3.0': 'Strong copyleft - network use requires source disclosure',
'proprietary': 'Cannot be used without explicit license',
'unknown': 'License unclear - legal review required'
}
def analyze_licenses(self, dependencies, project_license='MIT'):
"""
Analyze license compatibility
"""
issues = []
license_summary = {}
for package_name, package_info in dependencies.items():
license_type = package_info.get('license', 'unknown')
# Track license usage
if license_type not in license_summary:
license_summary[license_type] = []
license_summary[license_type].append(package_name)
# Check compatibility
if not self._is_compatible(project_license, license_type):
issues.append({
'package': package_name,
'license': license_type,
'issue': f'Incompatible with project license {project_license}',
'severity': 'high',
'recommendation': self._get_license_recommendation(
license_type,
project_license
)
})
# Check for restrictive licenses
if license_type in self.license_restrictions:
issues.append({
'package': package_name,
'license': license_type,
'issue': self.license_restrictions[license_type],
'severity': 'medium',
'recommendation': 'Review usage and ensure compliance'
})
return {
'summary': license_summary,
'issues': issues,
'compliance_status': 'FAIL' if issues else 'PASS'
}
```
**License Report**
```markdown
## License Compliance Report
### Summary
- **Project License**: MIT
- **Total Dependencies**: 245
- **License Issues**: 3
- **Compliance Status**: â ï¸ REVIEW REQUIRED
### License Distribution
| License | Count | Packages |
|---------|-------|----------|
| MIT | 180 | express, lodash, ... |
| Apache-2.0 | 45 | aws-sdk, ... |
| BSD-3-Clause | 15 | ... |
| GPL-3.0 | 3 | [ISSUE] package1, package2, package3 |
| Unknown | 2 | [ISSUE] mystery-lib, old-package |
### Compliance Issues
#### High Severity
1. **GPL-3.0 Dependencies**
- Packages: package1, package2, package3
- Issue: GPL-3.0 is incompatible with MIT license
- Risk: May require open-sourcing your entire project
- Recommendation:
- Replace with MIT/Apache licensed alternatives
- Or change project license to GPL-3.0
#### Medium Severity
2. **Unknown Licenses**
- Packages: mystery-lib, old-package
- Issue: Cannot determine license compatibility
- Risk: Potential legal exposure
- Recommendation:
- Contact package maintainers
- Review source code for license information
- Consider replacing with known alternatives
```
### 4. Outdated Dependencies
Identify and prioritize dependency updates:
**Version Analysis**
```python
def analyze_outdated_dependencies(dependencies):
"""
Check for outdated dependencies
"""
outdated = []
for package_name, package_info in dependencies.items():
current_version = package_info['version']
latest_version = fetch_latest_version(package_name, package_info['ecosystem'])
if is_outdated(current_version, latest_version):
# Calculate how outdated
version_diff = calculate_version_difference(current_version, latest_version)
outdated.append({
'package': package_name,
'current': current_version,
'latest': latest_version,
'type': version_diff['type'], # major, minor, patch
'releases_behind': version_diff['count'],
'age_days': get_version_age(package_name, current_version),
'breaking_changes': version_diff['type'] == 'major',
'update_effort': estimate_update_effort(version_diff),
'changelog': fetch_changelog(package_name, current_version, latest_version)
})
return prioritize_updates(outdated)
def prioritize_updates(outdated_deps):
"""
Prioritize updates based on multiple factors
"""
for dep in outdated_deps:
score = 0
# Security updates get highest priority
if dep.get('has_security_fix', False):
score += 100
# Major version updates
if dep['type'] == 'major':
score += 20
elif dep['type'] == 'minor':
score += 10
else:
score += 5
# Age factor
if dep['age_days'] > 365:
score += 30
elif dep['age_days'] > 180:
score += 20
elif dep['age_days'] > 90:
score += 10
# Number of releases behind
score += min(dep['releases_behind'] * 2, 20)
dep['priority_score'] = score
dep['priority'] = 'critical' if score > 80 else 'high' if score > 50 else 'medium'
return sorted(outdated_deps, key=lambda x: x['priority_score'], reverse=True)
```
### 5. Dependency Size Analysis
Analyze bundle size impact:
**Bundle Size Impact**
```javascript
// Analyze NPM package sizes
const analyzeBundleSize = async (dependencies) => {
const sizeAnalysis = {
totalSize: 0,
totalGzipped: 0,
packages: [],
recommendations: []
};
for (const [packageName, info] of Object.entries(dependencies)) {
try {
// Fetch package stats
const response = await fetch(
`https://bundlephobia.com/api/size?package=${packageName}@${info.version}`
);
const data = await response.json();
const packageSize = {
name: packageName,
version: info.version,
size: data.size,
gzip: data.gzip,
dependencyCount: data.dependencyCount,
hasJSNext: data.hasJSNext,
hasSideEffects: data.hasSideEffects
};
sizeAnalysis.packages.push(packageSize);
sizeAnalysis.totalSize += data.size;
sizeAnalysis.totalGzipped += data.gzip;
// Size recommendations
if (data.size > 1000000) { // 1MB
sizeAnalysis.recommendations.push({
package: packageName,
issue: 'Large bundle size',
size: `${(data.size / 1024 / 1024).toFixed(2)} MB`,
suggestion: 'Consider lighter alternatives or lazy loading'
});
}
} catch (error) {
console.error(`Failed to analyze ${packageName}:`, error);
}
}
// Sort by size
sizeAnalysis.packages.sort((a, b) => b.size - a.size);
// Add top offenders
sizeAnalysis.topOffenders = sizeAnalysis.packages.slice(0, 10);
return sizeAnalysis;
};
```
### 6. Supply Chain Security
Check for dependency hijacking and typosquatting:
**Supply Chain Checks**
```python
def check_supply_chain_security(dependencies):
"""
Perform supply chain security checks
"""
security_issues = []
for package_name, package_info in dependencies.items():
# Check for typosquatting
typo_check = check_typosquatting(package_name)
if typo_check['suspicious']:
security_issues.append({
'type': 'typosquatting',
'package': package_name,
'severity': 'high',
'similar_to': typo_check['similar_packages'],
'recommendation': 'Verify package name spelling'
})
# Check maintainer changes
maintainer_check = check_maintainer_changes(package_name)
if maintainer_check['recent_changes']:
security_issues.append({
'type': 'maintainer_change',
'package': package_name,
'severity': 'medium',
'details': maintainer_check['changes'],
'recommendation': 'Review recent package changes'
})
# Check for suspicious patterns
if contains_suspicious_patterns(package_info):
security_issues.append({
'type': 'suspicious_behavior',
'package': package_name,
'severity': 'high',
'patterns': package_info['suspicious_patterns'],
'recommendation': 'Audit package source code'
})
return security_issues
def check_typosquatting(package_name):
"""
Check if package name might be typosquatting
"""
common_packages = [
'react', 'express', 'lodash', 'axios', 'webpack',
'babel', 'jest', 'typescript', 'eslint', 'prettier'
]
for legit_package in common_packages:
distance = levenshtein_distance(package_name.lower(), legit_package)
if 0 < distance <= 2: # Close but not exact match
return {
'suspicious': True,
'similar_packages': [legit_package],
'distance': distance
}
return {'suspicious': False}
```
### 7. Automated Remediation
Generate automated fixes:
**Update Scripts**
```bash
#!/bin/bash
# Auto-update dependencies with security fixes
echo "ð Security Update Script"
echo "========================"
# NPM/Yarn updates
if [ -f "package.json" ]; then
echo "ð¦ Updating NPM dependencies..."
# Audit and auto-fix
npm audit fix --force
# Update specific vulnerable packages
npm update package1@^2.0.0 package2@~3.1.0
# Run tests
npm test
if [ $? -eq 0 ]; then
echo "â
NPM updates successful"
else
echo "â Tests failed, reverting..."
git checkout package-lock.json
fi
fi
# Python updates
if [ -f "requirements.txt" ]; then
echo "ð Updating Python dependencies..."
# Create backup
cp requirements.txt requirements.txt.backup
# Update vulnerable packages
pip-compile --upgrade-package package1 --upgrade-package package2
# Test installation
pip install -r requirements.txt --dry-run
if [ $? -eq 0 ]; then
echo "â
Python updates successful"
else
echo "â Update failed, reverting..."
mv requirements.txt.backup requirements.txt
fi
fi
```
**Pull Request Generation**
```python
def generate_dependency_update_pr(updates):
"""
Generate PR with dependency updates
"""
pr_body = f"""
## ð Dependency Security Update
This PR updates {len(updates)} dependencies to address security vulnerabilities and outdated packages.
### Security Fixes ({sum(1 for u in updates if u['has_security'])})
| Package | Current | Updated | Severity | CVE |
|---------|---------|---------|----------|-----|
"""
for update in updates:
if update['has_security']:
pr_body += f"| {update['package']} | {update['current']} | {update['target']} | {update['severity']} | {', '.join(update['cves'])} |\n"
pr_body += """
### Other Updates
| Package | Current | Updated | Type | Age |
|---------|---------|---------|------|-----|
"""
for update in updates:
if not update['has_security']:
pr_body += f"| {update['package']} | {update['current']} | {update['target']} | {update['type']} | {update['age_days']} days |\n"
pr_body += """
### Testing
- [ ] All tests pass
- [ ] No breaking changes identified
- [ ] Bundle size impact reviewed
### Review Checklist
- [ ] Security vulnerabilities addressed
- [ ] License compliance maintained
- [ ] No unexpected dependencies added
- [ ] Performance impact assessed
cc @security-team
"""
return {
'title': f'chore(deps): Security update for {len(updates)} dependencies',
'body': pr_body,
'branch': f'deps/security-update-{datetime.now().strftime("%Y%m%d")}',
'labels': ['dependencies', 'security']
}
```
### 8. Monitoring and Alerts
Set up continuous dependency monitoring:
**GitHub Actions Workflow**
```yaml
name: Dependency Audit
on:
schedule:
- cron: '0 0 * * *' # Daily
push:
paths:
- 'package*.json'
- 'requirements.txt'
- 'Gemfile*'
- 'go.mod'
workflow_dispatch:
jobs:
security-audit:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- name: Run NPM Audit
if: hashFiles('package.json')
run: |
npm audit --json > npm-audit.json
if [ $(jq '.vulnerabilities.total' npm-audit.json) -gt 0 ]; then
echo "::error::Found $(jq '.vulnerabilities.total' npm-audit.json) vulnerabilities"
exit 1
fi
- name: Run Python Safety Check
if: hashFiles('requirements.txt')
run: |
pip install safety
safety check --json > safety-report.json
- name: Check Licenses
run: |
npx license-checker --json > licenses.json
python scripts/check_license_compliance.py
- name: Create Issue for Critical Vulnerabilities
if: failure()
uses: actions/github-script@v6
with:
script: |
const audit = require('./npm-audit.json');
const critical = audit.vulnerabilities.critical;
if (critical > 0) {
github.rest.issues.create({
owner: context.repo.owner,
repo: context.repo.repo,
title: `ð¨ ${critical} critical vulnerabilities found`,
body: 'Dependency audit found critical vulnerabilities. See workflow run for details.',
labels: ['security', 'dependencies', 'critical']
});
}
```
## Output Format
1. **Executive Summary**: High-level risk assessment and action items
2. **Vulnerability Report**: Detailed CVE analysis with severity ratings
3. **License Compliance**: Compatibility matrix and legal risks
4. **Update Recommendations**: Prioritized list with effort estimates
5. **Supply Chain Analysis**: Typosquatting and hijacking risks
6. **Remediation Scripts**: Automated update commands and PR generation
7. **Size Impact Report**: Bundle size analysis and optimization tips
8. **Monitoring Setup**: CI/CD integration for continuous scanning
Focus on actionable insights that help maintain secure, compliant, and efficient dependency management.
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