CWE-370—Missing Check for Certificate Revocation after Initial Check

Weakness Name

Missing Check for Certificate Revocation after Initial Check

Description

The product does not check the revocation status of a certificate after its initial revocation check, which can cause the product to perform privileged actions even after the certificate is revoked at a later time.

If the revocation status of a certificate is not checked before each action that requires privileges, the system may be subject to a race condition. If a certificate is revoked after the initial check, all subsequent actions taken with the owner of the revoked certificate will lose all benefits guaranteed by the certificate. In fact, it is almost certain that the use of a revoked certificate indicates malicious activity.

Common Consequences

Scope:

Access Control

Impact:

Gain Privileges or Assume Identity

Notes:

Trust may be assigned to an entity who is not who it claims to be.

Scope:

Integrity

Impact:

Modify Application Data

Notes:

Data from an untrusted (and possibly malicious) source may be integrated.

Scope:

Confidentiality

Impact:

Read Application Data

Notes:

Data may be disclosed to an entity impersonating a trusted entity, resulting in information disclosure.

Related Weaknesses

• CWE-296Improper Following of a Certificate's Chain of TrustLow
• CWE-297Improper Validation of Certificate with Host MismatchHigh
• CWE-298Improper Validation of Certificate ExpirationLow
• CWE-299Improper Check for Certificate RevocationMedium