7d8a4182d7
- SwaggerSource probes OpenAPI doc endpoints for API keys in example/default fields - DeployPreviewSource scans Vercel/Netlify preview URLs for __NEXT_DATA__ env leaks - Both implement ReconSource, credentialless, with httptest-based tests
108 lines
2.7 KiB
Go
108 lines
2.7 KiB
Go
package sources
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import (
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"context"
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"io"
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"net/http"
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"regexp"
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"time"
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"golang.org/x/time/rate"
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"github.com/salvacybersec/keyhunter/pkg/providers"
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"github.com/salvacybersec/keyhunter/pkg/recon"
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)
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// DeployPreviewSource scans Vercel and Netlify deploy preview URLs for leaked
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// API keys. Deploy previews frequently use different (less restrictive)
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// environment variables than production, and their URLs are often guessable
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// from PR numbers or commit hashes.
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type DeployPreviewSource struct {
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BaseURL string
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Registry *providers.Registry
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Limiters *recon.LimiterRegistry
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Client *Client
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}
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var _ recon.ReconSource = (*DeployPreviewSource)(nil)
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func (s *DeployPreviewSource) Name() string { return "deploypreview" }
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func (s *DeployPreviewSource) RateLimit() rate.Limit { return rate.Every(3 * time.Second) }
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func (s *DeployPreviewSource) Burst() int { return 2 }
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func (s *DeployPreviewSource) RespectsRobots() bool { return true }
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func (s *DeployPreviewSource) Enabled(_ recon.Config) bool { return true }
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// deployPreviewPaths are paths where deploy previews expose build artifacts.
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var deployPreviewPaths = []string{
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"/",
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"/_next/data/",
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"/static/js/main.js",
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"/__nextjs_original-stack-frame",
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}
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// nextDataPattern matches __NEXT_DATA__ script blocks and inline env vars.
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var nextDataPattern = regexp.MustCompile(`(?i)(__NEXT_DATA__|NEXT_PUBLIC_|REACT_APP_|VITE_)[A-Z_]*(API[_]?KEY|SECRET|TOKEN)?['":\s]*[=:,]\s*['"]([a-zA-Z0-9_\-]{8,})['"]`)
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func (s *DeployPreviewSource) Sweep(ctx context.Context, _ string, out chan<- recon.Finding) error {
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base := s.BaseURL
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if base == "" {
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return nil
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}
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client := s.Client
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if client == nil {
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client = NewClient()
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}
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queries := BuildQueries(s.Registry, "deploypreview")
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if len(queries) == 0 {
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return nil
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}
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for _, q := range queries {
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if err := ctx.Err(); err != nil {
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return err
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}
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for _, path := range deployPreviewPaths {
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if err := ctx.Err(); err != nil {
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return err
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}
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if s.Limiters != nil {
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if err := s.Limiters.Wait(ctx, s.Name(), s.RateLimit(), s.Burst(), false); err != nil {
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return err
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}
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}
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probeURL := base + path
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, probeURL, nil)
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if err != nil {
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continue
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}
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resp, err := client.Do(ctx, req)
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if err != nil {
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continue
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}
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body, err := io.ReadAll(io.LimitReader(resp.Body, 512*1024))
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_ = resp.Body.Close()
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if err != nil {
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continue
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}
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if nextDataPattern.Match(body) {
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out <- recon.Finding{
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ProviderName: q,
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Source: probeURL,
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SourceType: "recon:deploypreview",
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Confidence: "medium",
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DetectedAt: time.Now(),
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}
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break // one finding per query is sufficient
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}
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}
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}
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return nil
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}
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