135 lines
3.3 KiB
Go
135 lines
3.3 KiB
Go
package sources
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import (
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"context"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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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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// JenkinsSource scrapes publicly accessible Jenkins build consoles for leaked
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// API keys. Many Jenkins instances are exposed to the internet without
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// authentication, and build console output frequently contains printed
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// environment variables or secrets passed via command-line arguments.
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type JenkinsSource 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 = (*JenkinsSource)(nil)
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func (s *JenkinsSource) Name() string { return "jenkins" }
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func (s *JenkinsSource) RateLimit() rate.Limit { return rate.Every(3 * time.Second) }
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func (s *JenkinsSource) Burst() int { return 2 }
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func (s *JenkinsSource) RespectsRobots() bool { return true }
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func (s *JenkinsSource) Enabled(_ recon.Config) bool { return true }
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// jenkinsJobsResponse represents the Jenkins API jobs listing.
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type jenkinsJobsResponse struct {
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Jobs []jenkinsJob `json:"jobs"`
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}
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type jenkinsJob struct {
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Name string `json:"name"`
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URL string `json:"url"`
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Color string `json:"color"`
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}
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func (s *JenkinsSource) 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 // No default; Jenkins instances are discovered via dorking
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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, "jenkins")
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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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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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// List jobs from the Jenkins API.
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jobsURL := fmt.Sprintf("%s/api/json?tree=jobs[name,url,color]", base)
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, jobsURL, nil)
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if err != nil {
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continue
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}
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req.Header.Set("Accept", "application/json")
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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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var jobs jenkinsJobsResponse
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if err := json.NewDecoder(resp.Body).Decode(&jobs); err != nil {
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_ = resp.Body.Close()
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continue
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}
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_ = resp.Body.Close()
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for _, job := range jobs.Jobs {
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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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// Fetch the last build console output.
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consoleURL := fmt.Sprintf("%s/job/%s/lastBuild/consoleText", base, job.Name)
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consoleReq, err := http.NewRequestWithContext(ctx, http.MethodGet, consoleURL, nil)
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if err != nil {
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continue
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}
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consoleResp, err := client.Do(ctx, consoleReq)
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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(consoleResp.Body, 256*1024))
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_ = consoleResp.Body.Close()
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if err != nil {
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continue
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}
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if ciLogKeyPattern.Match(body) {
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out <- recon.Finding{
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ProviderName: q,
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Source: consoleURL,
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SourceType: "recon:jenkins",
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Confidence: "medium",
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DetectedAt: time.Now(),
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}
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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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