128 lines
3.6 KiB
Go
128 lines
3.6 KiB
Go
package kontent
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import (
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"context"
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"fmt"
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"io"
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"net/http"
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"strings"
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regexp "github.com/wasilibs/go-re2"
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"github.com/trufflesecurity/trufflehog/v3/pkg/common"
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"github.com/trufflesecurity/trufflehog/v3/pkg/detectors"
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"github.com/trufflesecurity/trufflehog/v3/pkg/pb/detectorspb"
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)
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type Scanner struct{}
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// Ensure the Scanner satisfies the interface at compile time.
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var _ detectors.Detector = (*Scanner)(nil)
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var (
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client = common.SaneHttpClient()
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// Make sure that your group is surrounded in boundary characters such as below to reduce false positives.
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apiKeyPat = regexp.MustCompile(detectors.PrefixRegex([]string{"kontent"}) + common.BuildRegexJWT("30,34", "200,400", "40,43"))
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envIDPat = regexp.MustCompile(detectors.PrefixRegex([]string{"kontent", "env"}) + common.UUIDPattern)
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// API return this error when the environment does not exist or the api key does not have the permission to access that environment
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envErr = "The specified API key does not provide the permissions required to access the environment"
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)
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// Keywords are used for efficiently pre-filtering chunks.
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// Use identifiers in the secret preferably, or the provider name.
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func (s Scanner) Keywords() []string {
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return []string{"kontent"}
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}
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// FromData will find and optionally verify Kontent secrets in a given set of bytes.
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func (s Scanner) FromData(ctx context.Context, verify bool, data []byte) (results []detectors.Result, err error) {
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dataStr := string(data)
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var uniqueAPIKeys, uniqueEnvIDs = make(map[string]struct{}), make(map[string]struct{})
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for _, apiKey := range apiKeyPat.FindAllStringSubmatch(dataStr, -1) {
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uniqueAPIKeys[apiKey[1]] = struct{}{}
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}
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for _, envID := range envIDPat.FindAllStringSubmatch(dataStr, -1) {
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uniqueEnvIDs[envID[1]] = struct{}{}
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}
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for envID := range uniqueEnvIDs {
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if _, ok := detectors.UuidFalsePositives[detectors.FalsePositive(envID)]; ok {
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continue
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}
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if detectors.StringShannonEntropy(envID) < 3 {
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continue
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}
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for apiKey := range uniqueAPIKeys {
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s1 := detectors.Result{
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DetectorType: detectorspb.DetectorType_Kontent,
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Raw: []byte(envID),
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RawV2: []byte(envID + apiKey),
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}
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if verify {
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isVerified, verificationErr := verifyKontentAPIKey(client, envID, apiKey)
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s1.Verified = isVerified
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s1.SetVerificationError(verificationErr)
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}
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results = append(results, s1)
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}
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}
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return results, nil
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}
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func (s Scanner) Type() detectorspb.DetectorType {
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return detectorspb.DetectorType_Kontent
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}
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func (s Scanner) Description() string {
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return "Kontent is a headless CMS (Content Management System) that allows users to manage and deliver content to any device or application. Kontent API keys can be used to access and manage this content."
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}
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// api docs: https://kontent.ai/learn/docs/apis/openapi/management-api-v2/#operation/retrieve-environment-information
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func verifyKontentAPIKey(client *http.Client, envID, apiKey string) (bool, error) {
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req, err := http.NewRequest(http.MethodGet, fmt.Sprintf("https://manage.kontent.ai/v2/projects/%s", envID), nil)
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if err != nil {
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return false, nil
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}
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req.Header.Add("Authorization", "Bearer "+apiKey)
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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 func() {
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_, _ = io.Copy(io.Discard, resp.Body)
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_ = resp.Body.Close()
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}()
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switch resp.StatusCode {
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case http.StatusOK:
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return true, nil
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case http.StatusForbidden:
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bodyBytes, err := io.ReadAll(resp.Body)
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if err != nil {
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return false, err
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}
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if strings.Contains(string(bodyBytes), envErr) {
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return true, nil
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}
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return false, nil
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case http.StatusUnauthorized:
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return false, nil
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default:
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return false, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
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}
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}
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