Vulnerability CVE-2023-47108

Vulnerability CVE-2023-47108

Published: 2023-11-10

Description:

OpenTelemetry-Go Contrib is a collection of third-party packages for OpenTelemetry-Go. Prior to version 0.46.0, the grpc Unary Server Interceptor out of the box adds labels `net.peer.sock.addr` and `net.peer.sock.port` that have unbound cardinality. It leads to the server's potential memory exhaustion when many malicious requests are sent. An attacker can easily flood the peer address and port for requests. Version 0.46.0 contains a fix for this issue. As a workaround to stop being affected, a view removing the attributes can be used. The other possibility is to disable grpc metrics instrumentation by passing `otelgrpc.WithMeterProvider` option with `noop.NewMeterProvider`.

References:

https://github.com/open-telemetry/opentelemetry-go-contrib/security/advisories/GHSA-8pgv-569h-w5rw

https://github.com/open-telemetry/opentelemetry-go-contrib/pull/4322

https://github.com/open-telemetry/opentelemetry-go-contrib/commit/b44dfc9092b157625a5815cb437583cee663333b

https://github.com/open-telemetry/opentelemetry-go-contrib/blob/9d4eb7e7706038b07d33f83f76afbe13f53d171d/instrumentation/google.golang.org/grpc/otelgrpc/interceptor.go#L327

https://github.com/open-telemetry/opentelemetry-go-contrib/blob/instrumentation/google.golang.org/grpc/otelgrpc/v0.45.0/instrumentation/google.golang.org/grpc/otelgrpc/config.go#L138

https://pkg.go.dev/go.opentelemetry.io/otel/metric/noop#NewMeterProvider