Advisories for Golang/Github.com/Envoyproxy/Gateway package

In all Envoy Gateway versions prior to 1.2.7 and 1.3.1 a default Envoy Proxy access log configuration is used. This format is vulnerable to log injection attacks. If the attacker uses a specially crafted user-agent which performs json injection, then he could add and overwrite fields to the access log. Examples of attacks include: Using following string as user agent : HELLO-WORLD", "evil-ip": "1.1.1.1", "x-forwarded-for": "1.1.1.1 would lead to setting …

A user with access to a Kubernetes cluster where Envoy Gateway is installed can use a path traversal attack to execute Envoy Admin interface commands on proxies managed by Envoy Gateway. The admin interface can be used to terminate the Envoy process and extract the Envoy configuration (possibly containing confidential data). For example, the following command, if run from within the Kubernetes cluster, can be used to get the configuration …