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vmfunc
133224c348
`strings.Split(url, "://")[1]` was copy-pasted in 18 spots and panics on a schemeless target (index out of range). add a small stripScheme helper in the scan package - and a guarded equivalent in logger, which cant import scan - so a bare host degrades gracefully instead of crashing the scan.
113 lines
3.6 KiB
Go
113 lines
3.6 KiB
Go
/*
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·━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━·
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: :
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: █▀ █ █▀▀ · Blazing-fast pentesting suite :
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: ▄█ █ █▀ · BSD 3-Clause License :
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: :
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: (c) 2022-2026 vmfunc, xyzeva, :
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: lunchcat alumni & contributors :
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: :
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·━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━·
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*/
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package scan
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import (
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"context"
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"fmt"
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"net/http"
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"os"
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"strings"
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"time"
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"github.com/charmbracelet/log"
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"github.com/dropalldatabases/sif/internal/logger"
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"github.com/dropalldatabases/sif/internal/styles"
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)
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type CloudStorageResult struct {
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BucketName string `json:"bucket_name"`
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IsPublic bool `json:"is_public"`
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}
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func CloudStorage(url string, timeout time.Duration, logdir string) ([]CloudStorageResult, error) {
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fmt.Println(styles.Separator.Render("Starting " + styles.Status.Render("Cloud Storage Misconfiguration Scan") + "..."))
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sanitizedURL := stripScheme(url)
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if logdir != "" {
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if err := logger.WriteHeader(sanitizedURL, logdir, "Cloud Storage Misconfiguration Scan"); err != nil {
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log.Errorf("Error creating log file: %v", err)
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return nil, err
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}
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}
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cloudlog := log.NewWithOptions(os.Stderr, log.Options{
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Prefix: "C3",
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}).With("url", url)
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client := &http.Client{
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Timeout: timeout,
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}
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potentialBuckets := extractPotentialBuckets(sanitizedURL)
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var results []CloudStorageResult
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for _, bucket := range potentialBuckets {
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isPublic, err := checkS3Bucket(context.TODO(), bucket, client)
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if err != nil {
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cloudlog.Errorf("Error checking S3 bucket %s: %v", bucket, err)
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continue
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}
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result := CloudStorageResult{
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BucketName: bucket,
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IsPublic: isPublic,
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}
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results = append(results, result)
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if isPublic {
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cloudlog.Warnf("Public S3 bucket found: %s", styles.Highlight.Render(bucket))
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if logdir != "" {
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_ = logger.Write(sanitizedURL, logdir, fmt.Sprintf("Public S3 bucket found: %s\n", bucket))
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}
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} else {
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cloudlog.Infof("S3 bucket is not public/found: %s", bucket)
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}
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}
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return results, nil
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}
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func extractPotentialBuckets(url string) []string {
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// TODO: handle non-adjacent label combos and strip the tld
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parts := strings.Split(url, ".")
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var buckets []string
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for i, part := range parts {
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buckets = append(buckets, part, part+"-s3", "s3-"+part)
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if i < len(parts)-1 {
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domainExtension := part + "-" + parts[i+1]
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buckets = append(buckets, domainExtension, parts[i+1]+"-"+part)
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}
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}
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return buckets
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}
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func checkS3Bucket(ctx context.Context, bucket string, client *http.Client) (bool, error) {
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url := fmt.Sprintf("https://%s.s3.amazonaws.com", bucket)
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, http.NoBody)
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if err != nil {
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return false, err
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}
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resp, err := client.Do(req)
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if err != nil {
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return false, err
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}
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defer resp.Body.Close()
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// If we can access the bucket listing, it's public
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return resp.StatusCode == http.StatusOK, nil
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}
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