Lack of data validation - Token
Description
The generated JWT access token does not validate if the signature is valid so the token can be modified and requests are accepted; even removing the signature from the token works.
Impact
- Generate tokens by bypassing existing mechanisms. - Modify tokens allowing requests to be sent outside the application cycle.
Recommendation
Generate a token with random components without sensitive information and always validate that the integrity of the token is maintained (signature verification, signature).
Threat
Unauthorized attacker with access to a token.
Expected Remediation Time
⏱️ 90 minutes.