Emissary-Ingress (formerly Ambassador API Gateway) up to and including 1.13.9 allows malicious users to bypass client certificate requirements (i.e., mTLS cert_required) on backend upstreams when more than one TLSContext is defined and at least one configuration exists that does not require client certificate authentication. The attacker must send an SNI specifying an unprotected backend and an HTTP Host header specifying a protected backend. (2.x versions are unaffected. 1.x versions are unaffected with certain configuration settings involving prune_unreachable_routes and a wildcard Host resource.)
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
getambassador emissary-ingress |
Vulmon