CVE-2021-21378 JWT authentication bypass with unknown issuer token

Envoy is a cloud-native high-performance edge/middle/service proxy. In Envoy version 1.17.0 an attacker can bypass authentication by presenting a JWT token with an issuer that is not in the provider list when Envoy's JWT Authentication filter is configured with the allowmissing requirement under...

CVE-2021-21378

An authentication bypass vulnerability was found in envoyproxy/envoy. When specifying a JSON Web Token JWT authentication filter, if allowmissing is also used, this flaw allows an attacker to craft a request with a JWT token with an incorrect issuer bypassing the filter. The highest threat from...