Improper Certificate Validation
HashiCorp Vault and Vault Enterprise’s versions prior to 1.9.10, 1.10.x prior to 1.10.7, 1.11.x prior to 1.11.4 TLS certificate auth method did not initially load the optionally configured CRL issued by the role's CA into memory on startup, resulting in the revocation list not being checked if the CRL has not yet been retrieved.
CWE-295 - Improper Certificate Validation
The authenticity component of a web system stems from the ability to validate “Digital certificates”, which (i) establish trust between two or more entities sharing data over a network; (ii) ensure data at rest and transit is secure from unauthorized access; and (iii) check the identity of the actors that interact with the system. An application with absent or ineffective certificate validation mechanisms allows malicious users, impersonating trusted hosts, to manipulate the communication path between the client and the host, resulting in unauthorized access to data and to the application’s internal environment, and potentially enabling man-in-the-middle attacks.