NeuVector vulnerabilities

The NeuVector admission webhook silently excludes containers from policy evaluation when their image path matches one of three hardcoded service mesh sidecar images. Since the image path is entirely controlled by the workload author, any user capable of deploying workloads can evade admission deny rules simply by naming their image path after one of these sidecar images.

The NeuVector JWT verifier accepts noncanonical Base64URL encodings of the same RSA signature field. An attacker holding a valid JWT that has not expired, but was logged out of NeuVector, can continue using the non-expired token with equivalent spelling of the RSA signature field until the token validity expires.

Authorised users of outside applications behind the same corporate identity provider (IdP), such as a wiki, ticketing system, or expenses tool, can log into their system via SAML SSO. If that assertion is presented to NeuVector, NeuVector accepts it because the only thing distinguishing an assertion for NeuVector from an assertion for the wiki is the element, and the NotInAudience warning that reports the mismatch is never read.

NeuVector through 5.4.9 can potentially leak information from the manager /network/graph API due to missing authentication and cached data containing sensitive information.