CVE-2022-21707: Missing Authorization (CWE-862)
value: wasmCloud Host Runtime is a server process that securely hosts and provides dispatch for web assembly (WASM) actors and capability providers. In versions prior to 0.52.2 actors can bypass capability authorization. Actors are normally required to declare their capabilities for inbound invocations, but with this vulnerability actor capability claims are not verified upon receiving invocations. This compromises the security model for actors as they can receive unauthorized invocations from linked capability providers. The problem has been patched in versions `0.52.2` and greater. There is no workaround and users are advised to upgrade to an unaffected version as soon as possible.
CWE description: The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
CVSS v3 base score: 8.1
Published: 2022-01-21T23:15Z
Repository: https://github.com/wasmCloud/wasmcloud-otp
Language: Other
Files changed: host_core/lib/host_core/actors/actor_module.ex, host_core/mix.exs, host_core/test/e2e/echo_test.exs, host_core/test/e2e/kvcounter_test.exs, host_core/test/fixtures/actors/echo_unpriv/.cargo/config.toml, host_core/test/fixtures/actors/echo_unpriv/.gitignore, host_core/test/fixtures/actors/echo_unpriv/.keys/account.nk, host_core/test/fixtures/actors/echo_unpriv/.keys/module.nk, host_core/test/fixtures/actors/echo_unpriv/Cargo.lock, host_core/test/fixtures/actors/echo_unpriv/Cargo.toml, host_core/test/fixtures/actors/echo_unpriv/Makefile, host_core/test/fixtures/actors/echo_unpriv/README.md, host_core/test/fixtures/actors/echo_unpriv/actor.mk, host_core/test/fixtures/actors/echo_unpriv/src/lib.rs, host_core/test/host_core/actors_test.exs, host_core/test/host_core/wasmcloud/native_test.exs, host_core/test/support/constants.exs, wasmcloud_host/chart/Chart.yaml, wasmcloud_host/mix.exs
Commit date: 2022-01-21 16:28:17 -0500
Commit message: Merge pull request from GHSA-2cmx-rr54-88g5

Signed-off-by: Brooks Townsend <brooks@cosmonic.com>

resolved code warning

Signed-off-by: Brooks Townsend <brooks@cosmonic.com>
Diff: diff --git a/host_core/lib/host_core/actors/actor_module.ex b/host_core/lib/host_core/actors/actor_module.ex
index 91358a3..3b50811 100644
--- a/host_core/lib/host_core/actors/actor_module.ex
+++ b/host_core/lib/host_core/actors/actor_module.ex
@@ -187,11 +187,16 @@ defmodule HostCore.Actors.ActorModule do
                error: msg,
                instance_id: iid
              }, inv}
 
           _ ->
-            case perform_invocation(agent, inv["operation"], inv["msg"]) do
+            case validate_invocation(
+                   agent,
+                   inv["origin"]["link_name"],
+                   inv["origin"]["contract_id"]
+                 )
+                 |> perform_invocation(inv["operation"], inv["msg"]) do
               {:ok, response} ->
                 {%{
                    msg: response,
                    invocation_id: inv["id"],
                    instance_id: iid
@@ -251,11 +256,26 @@ defmodule HostCore.Actors.ActorModule do
 
     Wasmex.start_link(%{bytes: bytes, imports: imports})
     |> prepare_module(agent, oci)
   end
 
-  defp perform_invocation(agent, operation, payload) do
+  # Actor-to-actor calls are always allowed
+  defp validate_invocation(agent, "", "") do
+    {agent, true}
+  end
+
+  # Actor-to-actor calls are always allowed
+  defp validate_invocation(agent, nil, nil) do
+    {agent, true}
+  end
+
+  defp validate_invocation(agent, _link_name, contract_id) do
+    caps = Agent.get(agent, fn contents -> contents.claims.caps end)
+    {agent, Enum.member?(caps, contract_id)}
+  end
+
+  defp perform_invocation({agent, true}, operation, payload) do
     Logger.debug("performing invocation #{operation}")
     raw_state = Agent.get(agent, fn content -> content end)
 
     raw_state = %State{
       raw_state
@@ -278,10 +298,15 @@ defmodule HostCore.Actors.ActorModule do
       byte_size(payload)
     ])
     |> to_guest_call_result(agent)
   end
 
+  defp perform_invocation({_agent, false}, _operation, _payload) do
+    Logger.error("Actor does not have proper capabilities to receive this invocation")
+    {:error, "actor is missing capability claims"}
+  end
+
   defp to_guest_call_result({:ok, [res]}, agent) do
     state = Agent.get(agent, fn content -> content end)
 
     case res do
       1 -> {:ok, state.guest_response}
@@ -296,11 +321,11 @@ defmodule HostCore.Actors.ActorModule do
   defp perform_health_check(agent) do
     payload = %{placeholder: true} |> Msgpax.pack!() |> IO.iodata_to_binary()
 
     res =
       try do
-        perform_invocation(agent, @op_health_check, payload)
+        perform_invocation({agent, true}, @op_health_check, payload)
       rescue
         _e -> {:error, "Failed to invoke actor module"}
       end
 
     case res do
@@ -357,11 +382,11 @@ defmodule HostCore.Actors.ActorModule do
 
     origin = inv["origin"]
     target = inv["target"]
 
     evt_type =
-      if Map.get(inv_r, "error") == nil do
+      if Map.get(inv_r, :error) == nil do
         "invocation_succeeded"
       else
         "invocation_failed"
       end
 
diff --git a/host_core/mix.exs b/host_core/mix.exs
index 4d8af42..92f5ebb 100644
--- a/host_core/mix.exs
+++ b/host_core/mix.exs
@@ -1,9 +1,9 @@
 defmodule HostCore.MixProject do
   use Mix.Project
 
-  @app_vsn "0.52.1"
+  @app_vsn "0.52.2"
 
   def project do
     [
       app: :host_core,
       version: @app_vsn,
diff --git a/host_core/test/e2e/echo_test.exs b/host_core/test/e2e/echo_test.exs
index 8bd911d..472d93a 100644
--- a/host_core/test/e2e/echo_test.exs
+++ b/host_core/test/e2e/echo_test.exs
@@ -10,10 +10,12 @@ defmodule HostCore.E2E.EchoTest do
     ]
   end
 
   @echo_key HostCoreTest.Constants.echo_key()
   @echo_path HostCoreTest.Constants.echo_path()
+  @echo_unpriv_key HostCoreTest.Constants.echo_unpriv_key()
+  @echo_unpriv_path HostCoreTest.Constants.echo_unpriv_path()
   @httpserver_link HostCoreTest.Constants.default_link()
   @httpserver_path HostCoreTest.Constants.httpserver_path()
 
   test "echo roundtrip", %{:evt_watcher => evt_watcher} do
     on_exit(fn -> HostCore.Host.purge() end)
@@ -68,6 +70,63 @@ defmodule HostCore.E2E.EchoTest do
       )
 
     HTTPoison.start()
     {:ok, _resp} = HTTPoison.get("http://localhost:8080/foo/bar")
   end
+
+  test "unprivileged actor cannot receive undeclared invocations", %{:evt_watcher => evt_watcher} do
+    on_exit(fn -> HostCore.Host.purge() end)
+
+    {:ok, bytes} = File.read(@echo_unpriv_path)
+    {:ok, _pid} = HostCore.Actors.ActorSupervisor.start_actor(bytes)
+    :ok = HostCoreTest.EventWatcher.wait_for_actor_start(evt_watcher, @echo_unpriv_key)
+
+    actor_count =
+      Map.get(HostCore.Actors.ActorSupervisor.all_actors(), @echo_unpriv_key)
+      |> length
+
+    assert actor_count == 1
+
+    {:ok, bytes} = File.read(@httpserver_path)
+    {:ok, par} = HostCore.WasmCloud.Native.par_from_bytes(bytes |> IO.iodata_to_binary())
+    httpserver_key = par.claims.public_key
+    httpserver_contract = par.contract_id
+
+    # OK to put link definition with no claims information
+    assert HostCore.Linkdefs.Manager.put_link_definition(
+             @echo_key,
+             httpserver_contract,
+             @httpserver_link,
+             httpserver_key,
+             %{PORT: "8083"}
+           ) == :ok
+
+    {:ok, _pid} =
+      HostCore.Providers.ProviderSupervisor.start_provider_from_file(
+        @httpserver_path,
+        @httpserver_link
+      )
+
+    :ok =
+      HostCoreTest.EventWatcher.wait_for_provider_start(
+        evt_watcher,
+        httpserver_contract,
+        @httpserver_link,
+        httpserver_key
+      )
+
+    # For now, okay to put a link definition without proper claims
+    assert HostCore.Linkdefs.Manager.put_link_definition(
+             @echo_unpriv_key,
+             httpserver_contract,
+             @httpserver_link,
+             httpserver_key,
+             %{PORT: "8084"}
+           ) == :ok
+
+    HTTPoison.start()
+    {:ok, resp} = HTTPoison.get("http://localhost:8084/foobar")
+
+    assert resp.body == ""
+    assert resp.status_code == 500
+  end
 end
diff --git a/host_core/test/e2e/kvcounter_test.exs b/host_core/test/e2e/kvcounter_test.exs
index 4b9def3..6fd7962 100644
--- a/host_core/test/e2e/kvcounter_test.exs
+++ b/host_core/test/e2e/kvcounter_test.exs
@@ -212,12 +212,10 @@ defmodule HostCore.E2E.KVCounterTest do
 
     HTTPoison.start()
 
     {:ok, resp} = HTTPoison.get("http://localhost:8082/foobar")
 
-    IO.inspect(resp)
-
     assert resp.body ==
              "{\"error\":\"Host send error Invocation not authorized: missing claim for wasmcloud:keyvalue\"}"
 
     assert resp.status_code == 500
   end
diff --git a/host_core/test/fixtures/actors/echo_unpriv/.cargo/config.toml b/host_core/test/fixtures/actors/echo_unpriv/.cargo/config.toml
new file mode 100644
index 0000000..f4e8c00
--- /dev/null
+++ b/host_core/test/fixtures/actors/echo_unpriv/.cargo/config.toml
@@ -0,0 +1,2 @@
+[build]
+target = "wasm32-unknown-unknown"
diff --git a/host_core/test/fixtures/actors/echo_unpriv/.gitignore b/host_core/test/fixtures/actors/echo_unpriv/.gitignore
new file mode 100644
index 0000000..bd44ede
--- /dev/null
+++ b/host_core/test/fixtures/actors/echo_unpriv/.gitignore
@@ -0,0 +1,2 @@
+target
+build
diff --git a/host_core/test/fixtures/actors/echo_unpriv/.keys/account.nk b/host_core/test/fixtures/actors/echo_unpriv/.keys/account.nk
new file mode 100644
index 0000000..eb892c4
--- /dev/null
+++ b/host_core/test/fixtures/actors/echo_unpriv/.keys/account.nk
@@ -0,0 +1 @@
+SAADV6UE6ILDAJ5TW2LCD2M6MNCMOLLCLQ5OLD53BZA2GTWJKWELBMWA3U
diff --git a/host_core/test/fixtures/actors/echo_unpriv/.keys/module.nk b/host_core/test/fixtures/actors/echo_unpriv/.keys/module.nk
new file mode 100644
index 0000000..060199f
--- /dev/null
+++ b/host_core/test/fixtures/actors/echo_unpriv/.keys/module.nk
@@ -0,0 +1 @@
+SMAMZ6LKVEXGCLWVF3A37IRWF6JDV6CI27TB2K3YFX3FO47AEA3QVVZ4JA
diff --git a/host_core/test/fixtures/actors/echo_unpriv/Cargo.lock b/host_core/test/fixtures/actors/echo_unpriv/Cargo.lock
new file mode 100644
index 0000000..4df90a2
--- /dev/null
+++ b/host_core/test/fixtures/actors/echo_unpriv/Cargo.lock
@@ -0,0 +1,2972 @@
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+version = "0.2.78"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "632f73e236b219150ea279196e54e610f5dbafa5d61786303d4da54f84e47fce"
+dependencies = [
+ "cfg-if 1.0.0",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.78"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a317bf8f9fba2476b4b2c85ef4c4af8ff39c3c7f0cdfeed4f82c34a880aa837b"
+dependencies = [
+ "bumpalo",
+ "lazy_static",
+ "log",
+ "proc-macro2 1.0.30",
+ "quote 1.0.10",
+ "syn 1.0.80",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e8d7523cb1f2a4c96c1317ca690031b714a51cc14e05f712446691f413f5d39"
+dependencies = [
+ "cfg-if 1.0.0",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.78"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d56146e7c495528bf6587663bea13a8eb588d39b36b679d83972e1a2dbbdacf9"
+dependencies = [
+ "quote 1.0.10",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.78"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7803e0eea25835f8abdc585cd3021b3deb11543c6fe226dcd30b228857c5c5ab"
+dependencies = [
+ "proc-macro2 1.0.30",
+ "quote 1.0.10",
+ "syn 1.0.80",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.78"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0237232789cf037d5480773fe568aac745bfe2afbc11a863e97901780a6b47cc"
+
+[[package]]
+name = "wasmbus-macros"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e671adea13b924e8bd56f55edeea2538be518aae864731e8883668119213ea3d"
+dependencies = [
+ "proc-macro-error",
+ "proc-macro2 1.0.30",
+ "quote 1.0.10",
+ "syn 1.0.80",
+]
+
+[[package]]
+name = "wasmbus-rpc"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8875f45e1c7a1b75a0a9dc66a570524ead1b298f9919ec3b7a768941974e4524"
+dependencies = [
+ "async-trait",
+ "base64",
+ "cfg-if 1.0.0",
+ "chrono",
+ "crossbeam",
+ "data-encoding",
+ "futures 0.3.17",
+ "log",
+ "minicbor",
+ "nats",
+ "once_cell",
+ "pin-utils",
+ "ratsio_fork_040",
+ "ring",
+ "rmp-serde",
+ "serde",
+ "serde_bytes",
+ "serde_json",
+ "thiserror",
+ "tokio",
+ "tokio-timer",
+ "toml",
+ "uuid",
+ "wascap",
+ "wasmbus-macros",
+ "weld-codegen",
+]
+
+[[package]]
+name = "wasmcloud-interface-httpserver"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09cde70347ba62aa804f2704e4220437be0a73326b95e97cce2b7d90a53ac0f3"
+dependencies = [
+ "async-trait",
+ "serde",
+ "serde_bytes",
+ "serde_json",
+ "wasmbus-rpc",
+ "weld-codegen",
+]
+
+[[package]]
+name = "web-sys"
+version = "0.3.55"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38eb105f1c59d9eaa6b5cdc92b859d85b926e82cb2e0945cd0c9259faa6fe9fb"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "webpki"
+version = "0.21.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8e38c0608262c46d4a56202ebabdeb094cef7e560ca7a226c6bf055188aa4ea"
+dependencies = [
+ "ring",
+ "untrusted",
+]
+
+[[package]]
+name = "weld-codegen"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ad4b02d834c2a2d6a8c045d1325269942850309fa3af8037935e37db9d49f7bc"
+dependencies = [
+ "Inflector",
+ "atelier_assembler",
+ "atelier_core",
+ "atelier_json",
+ "atelier_smithy",
+ "bytes",
+ "cfg-if 1.0.0",
+ "directories",
+ "downloader",
+ "handlebars",
+ "lazy_static",
+ "lexical-sort",
+ "minicbor",
+ "reqwest",
+ "rustc-hash",
+ "serde",
+ "serde_json",
+ "tempfile",
+ "thiserror",
+ "toml",
+]
+
+[[package]]
+name = "which"
+version = "4.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea187a8ef279bc014ec368c27a920da2024d2a711109bfbe3440585d5cf27ad9"
+dependencies = [
+ "either",
+ "lazy_static",
+ "libc",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "winreg"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0120db82e8a1e0b9fb3345a539c478767c0048d842860994d96113d5b667bd69"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "zeroize"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf68b08513768deaa790264a7fac27a58cbf2705cfcdc9448362229217d7e970"
+dependencies = [
+ "zeroize_derive",
+]
+
+[[package]]
+name = "zeroize_derive"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bdff2024a851a322b08f179173ae2ba620445aef1e838f0c196820eade4ae0c7"
+dependencies = [
+ "proc-macro2 1.0.30",
+ "quote 1.0.10",
+ "syn 1.0.80",
+ "synstructure",
+]
diff --git a/host_core/test/fixtures/actors/echo_unpriv/Cargo.toml b/host_core/test/fixtures/actors/echo_unpriv/Cargo.toml
new file mode 100644
index 0000000..028314a
--- /dev/null
+++ b/host_core/test/fixtures/actors/echo_unpriv/Cargo.toml
@@ -0,0 +1,22 @@
+[package]
+name = "echo_unpriv"
+version = "0.3.3"
+authors = [ "wasmcloud Team" ]
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+async-trait = "0.1"
+futures = "0.3"
+serde_bytes = "0.11"
+serde_json = "1.0"
+serde = {version = "1.0", features = ["derive"]}
+wasmbus-rpc = "0.5.2"
+wasmcloud-interface-httpserver = "0.2.0"
+
+[profile.release]
+# Optimize for small code size
+lto = true
+opt-level = "s"
diff --git a/host_core/test/fixtures/actors/echo_unpriv/Makefile b/host_core/test/fixtures/actors/echo_unpriv/Makefile
new file mode 100644
index 0000000..33ac807
--- /dev/null
+++ b/host_core/test/fixtures/actors/echo_unpriv/Makefile
@@ -0,0 +1,14 @@
+# examples/actor/echo
+
+PROJECT  = echo
+VERSION  = $(shell cargo metadata --no-deps --format-version 1 | jq -r '.packages[] .version' | head -1)
+REVISION = 4
+# list of all contract claims for actor signing (space-separated)
+CLAIMS   = ""
+# registry url for our actor
+REG_URL  = localhost:5000/v2/$(PROJECT):$(VERSION)
+# command to upload to registry (without last wasm parameter)
+PUSH_REG_CMD = wash reg push --insecure $(REG_URL)
+
+include actor.mk
+
diff --git a/host_core/test/fixtures/actors/echo_unpriv/README.md b/host_core/test/fixtures/actors/echo_unpriv/README.md
new file mode 100644
index 0000000..295c736
--- /dev/null
+++ b/host_core/test/fixtures/actors/echo_unpriv/README.md
@@ -0,0 +1,9 @@
+# A simple http echo server
+
+This example demonstrates the actor code generation and
+a handler for the wasmcloud:httpserver capability contract.
+
+For each http request, the actor returns a json-formatted
+string containing fields from the request.
+
+
diff --git a/host_core/test/fixtures/actors/echo_unpriv/actor.mk b/host_core/test/fixtures/actors/echo_unpriv/actor.mk
new file mode 100644
index 0000000..e8fbf1d
--- /dev/null
+++ b/host_core/test/fixtures/actors/echo_unpriv/actor.mk
@@ -0,0 +1,135 @@
+# common makefile rules for building actors
+#
+# Before including this, your project Makefile should define the following:
+#
+# Required
+# -----------
+# PROJECT      - Short name for the project, must be valid filename chars, no spaces
+# CLAIMS       - Space-separtaed list of capability contracts to use for signing
+#                These should match the capability providers the actor needs to use.
+#                For example: 
+#                    wasmcloud:httpserver wasmcloud:builtin:logging
+# VERSION      - The actor version number, usually semver format, X.Y.Z
+# REVISION     - A number that should be incremented with every build,
+#                whether or not VERSION has changed
+# REG_URL      - Registry url, e.g. 'localhost:5000' or 'wasmcloud.azurecr.io'
+# PUSH_REG_CMD - Command to push to registry, for example:
+#                    wash reg push --insecure $(REG_URL)
+#
+# 
+# Optional
+# -----------
+# KEYDIR    - path to private key folder
+# CARGO     - cargo binary (name or path), defaults to cargo
+# WASH      - wash binary (name or path), defaults to wash
+# RUST_DEPS - rust source files
+# DIST_WASM - the final file after building and signing
+# TARGET_DIR - location of cargo build target folder if not in current dir
+#              (if it's in a workspace, it may be elsewhere)
+# WASM_TARGET - type of wasm file, defaults to wasm32-unknown-unknown
+#
+
+KEYDIR    ?= .keys
+CARGO     ?= cargo
+WASH      ?= wash
+RUST_DEPS ?= Cargo.toml Makefile $(wildcard src/*.rs) .cargo/config.toml
+# location of cargo output files
+TARGET_DIR ?= target
+# location of wasm file after build and signing
+DIST_WASM ?= build/$(PROJECT)_s.wasm
+WASM_TARGET ?= wasm32-unknown-unknown
+UNSIGNED_WASM = $(TARGET_DIR)/$(WASM_TARGET)/release/$(PROJECT).wasm
+
+# verify all required variables are set
+check-var-defined = $(if $(strip $($1)),,$(error Required variable "$1" is not defined))
+
+$(call check-var-defined,PROJECT)
+$(call check-var-defined,CLAIMS)
+$(call check-var-defined,VERSION)
+$(call check-var-defined,REVISION)
+$(call check-var-defined,REG_URL)
+$(call check-var-defined,PUSH_REG_CMD)
+
+all:: $(DIST_WASM)
+
+# default target is signed wasm file
+# sign it
+$(DIST_WASM): $(UNSIGNED_WASM) Makefile
+	@mkdir -p $(dir $@)
+	@WASH_ISSUER_KEY=$(shell cat .keys/account.nk) \
+	WASH_SUBJECT_KEY=$(shell cat .keys/module.nk) \
+	$(WASH) claims sign $< \
+		$(foreach claim,$(CLAIMS), -c $(claim) ) \
+		--name "$(PROJECT)" --ver $(VERSION) --rev $(REVISION) \
+		--destination $@
+	mv $@ ../echo_unpriv_s.wasm
+
+
+# the wasm should be rebuilt if any source files change
+$(UNSIGNED_WASM): $(RUST_DEPS)
+	$(CARGO) build --release
+
+
+# push signed wasm file to registry
+push: $(DIST_WASM)
+	$(PUSH_REG_CMD) $(DIST_WASM)
+
+# tell host to start an instance of the actor
+start:
+	$(WASH) ctl start actor $(REG_URL) --timeout 3
+
+# NOT WORKING - live actor updates not working yet
+# update it (should update revision before doing this)
+#update:
+#	$(PUSH_REG_CMD) $(DIST_WASM)
+#	$(WASH) ctl update actor  \
+#        $(shell $(WASH) ctl get hosts -o json | jq -r ".hosts[0].id") \
+#	    $(shell make actor_id) \
+#	    $(REG_URL) --timeout 3
+
+inventory:
+	$(WASH) ctl get inventory $(shell $(WASH) ctl get hosts -o json | jq -r ".hosts[0].id")
+
+ifneq ($(wildcard test-options.json),)
+# if this is a test actor, run its start method
+# project makefile can set RPC_TEST_TIMEOUT to override default
+RPC_TEST_TIMEOUT ?= 2
+test::
+	$(WASH) call --test --data test-options.json --rpc-timeout $(TEST_TIMEOUT) \
+	    $(shell make actor_id) \
+	    Start
+endif
+
+# generate release build
+release::
+	cargo build --release
+
+# standard rust commands
+check clippy doc:
+	$(CARGO) $@
+
+# remove 
+clean::
+	$(CARGO) clean
+	rm -rf build
+
+inspect claims: $(DIST_WASM)
+	$(WASH) claims inspect $(DIST_WASM)
+
+# need a signed wasm before we can print the id
+_actor_id: $(DIST_WASM)
+	@$(WASH) claims inspect $(DIST_WASM) -o json | jq -r .module
+
+actor_id:
+	@echo $(shell make _actor_id 2>/dev/null | tail -1)
+
+ifeq ($(wildcard codegen.toml),codegen.toml)
+# if there are interfaces here, enable lint and validate rules
+lint validate::
+	$(WASH) $@
+else
+lint validate::
+
+endif
+
+.PHONY: actor_id check clean clippy doc release test update
diff --git a/host_core/test/fixtures/actors/echo_unpriv/src/lib.rs b/host_core/test/fixtures/actors/echo_unpriv/src/lib.rs
new file mode 100644
index 0000000..d03b0c5
--- /dev/null
+++ b/host_core/test/fixtures/actors/echo_unpriv/src/lib.rs
@@ -0,0 +1,26 @@
+use serde_json::json;
+use wasmbus_rpc::actor::prelude::*;
+use wasmcloud_interface_httpserver::{HttpRequest, HttpResponse, HttpServer, HttpServerReceiver};
+
+#[derive(Debug, Default, Actor, HealthResponder)]
+#[services(Actor, HttpServer)]
+struct EchoActor {}
+
+/// Implementation of HttpServer trait methods
+#[async_trait]
+impl HttpServer for EchoActor {
+    async fn handle_request(&self, _ctx: &Context, value: &HttpRequest) -> RpcResult<HttpResponse> {
+        let body = json!({
+            "method": &value.method,
+            "path": &value.path,
+            "query_string": &value.query_string,
+            "body": &value.body,
+        });
+        let resp = HttpResponse {
+            body: serde_json::to_vec(&body)
+                .map_err(|e| RpcError::ActorHandler(format!("serializing response: {}", e)))?,
+            ..Default::default()
+        };
+        Ok(resp)
+    }
+}
diff --git a/host_core/test/fixtures/actors/echo_unpriv_s.wasm b/host_core/test/fixtures/actors/echo_unpriv_s.wasm
new file mode 100644
index 0000000..23f5e4c
Binary files /dev/null and b/host_core/test/fixtures/actors/echo_unpriv_s.wasm differ
diff --git a/host_core/test/fixtures/actors/pinger_s.wasm b/host_core/test/fixtures/actors/pinger_s.wasm
index 138e252..abf29a7 100644
Binary files a/host_core/test/fixtures/actors/pinger_s.wasm and b/host_core/test/fixtures/actors/pinger_s.wasm differ
diff --git a/host_core/test/host_core/actors_test.exs b/host_core/test/host_core/actors_test.exs
index 76d3fac..691159a 100644
--- a/host_core/test/host_core/actors_test.exs
+++ b/host_core/test/host_core/actors_test.exs
@@ -24,10 +24,12 @@ defmodule HostCore.ActorsTest do
   @httpserver_key HostCoreTest.Constants.httpserver_key()
   @kvcounter_key HostCoreTest.Constants.kvcounter_key()
   @httpserver_contract HostCoreTest.Constants.httpserver_contract()
   @httpserver_link HostCoreTest.Constants.default_link()
 
+  @pinger_key HostCoreTest.Constants.pinger_key()
+
   test "live update same revision fails" do
     on_exit(fn -> HostCore.Host.purge() end)
     :ets.delete(:refmap_table, @echo_oci_reference)
     :ets.delete(:refmap_table, @echo_old_oci_reference)
     {:ok, _pid} = HostCore.Actors.ActorSupervisor.start_actor_from_oci(@echo_oci_reference)
@@ -202,11 +204,11 @@ defmodule HostCore.ActorsTest do
 
     inv =
       HostCore.WasmCloud.Native.generate_invocation_bytes(
         seed,
         "system",
-        :provider,
+        :actor,
         @httpserver_key,
         @httpserver_contract,
         @httpserver_link,
         "HttpServer.HandleRequest",
         req
@@ -255,20 +257,19 @@ defmodule HostCore.ActorsTest do
 
     inv =
       HostCore.WasmCloud.Native.generate_invocation_bytes(
         seed,
         "system",
-        :provider,
-        @httpserver_key,
+        :actor,
+        @pinger_key,
         @httpserver_contract,
         @httpserver_link,
         "HandleRequest",
         req
       )
 
-    pinger_key = "MDCX6E7RPUXSX5TJUD34CALXJJKV46MWJ2BUJQGWDDR3IYRJIWNUQ5PN"
-    topic = "wasmbus.rpc.#{HostCore.Host.lattice_prefix()}.#{pinger_key}"
+    topic = "wasmbus.rpc.#{HostCore.Host.lattice_prefix()}.#{@pinger_key}"
 
     res =
       case Gnat.request(:lattice_nats, topic, inv, receive_timeout: 2_000) do
         {:ok, %{body: body}} -> body
         {:error, :timeout} -> :fail
diff --git a/host_core/test/host_core/wasmcloud/native_test.exs b/host_core/test/host_core/wasmcloud/native_test.exs
index 5930170..3af63f7 100644
--- a/host_core/test/host_core/wasmcloud/native_test.exs
+++ b/host_core/test/host_core/wasmcloud/native_test.exs
@@ -22,11 +22,11 @@ defmodule HostCore.WasmCloud.NativeTest do
 
     assert par.claims.public_key == @httpserver_key
     assert par.claims.issuer == @official_issuer
     assert par.claims.version == "0.14.5"
 
-    assert byte_size(par.target_bytes |> IO.iodata_to_binary()) > 8_000_000
+    assert byte_size(par.target_bytes |> IO.iodata_to_binary()) > 1_000
     assert par.contract_id == @httpserver_contract
     assert par.vendor == @httpserver_vendor
   end
 
   test "generates seed keys" do
diff --git a/host_core/test/support/constants.exs b/host_core/test/support/constants.exs
index 4817573..38c7145 100644
--- a/host_core/test/support/constants.exs
+++ b/host_core/test/support/constants.exs
@@ -2,17 +2,21 @@ defmodule HostCoreTest.Constants do
   # Actor related constants
   @echo_key "MBCFOPM6JW2APJLXJD3Z5O4CN7CPYJ2B4FTKLJUR5YR5MITIU7HD3WD5"
   @echo_ociref "wasmcloud.azurecr.io/echo:0.3.1"
   @echo_ociref_updated "wasmcloud.azurecr.io/echo:0.3.1-liveupdate"
   @echo_path "test/fixtures/actors/echo.wasm"
+  @echo_unpriv_key "MCRACEYKJLCP7NLVMUTO2SCQ26JFL3Z4TBIXPXDE7KPBI2GEH5DA57L5"
+  @echo_unpriv_path "test/fixtures/actors/echo_unpriv_s.wasm"
+
   @kvcounter_key "MCFMFDWFHGKELOXPCNCDXKK5OFLHBVEWRAOXR5JSQUD2TOFRE3DFPM7E"
   @kvcounter_ociref "wasmcloud.azurecr.io/kvcounter:0.3.0"
   @kvcounter_path "test/fixtures/actors/kvcounter.wasm"
   @kvcounter_unpriv_key "MBW3UGAIONCX3RIDDUGDCQIRGBQQOWS643CVICQ5EZ7SWNQPZLZTSQKU"
   @kvcounter_unpriv_path "test/fixtures/actors/kvcounter_unpriv_s.wasm"
+
   @pinger_path "test/fixtures/actors/pinger_s.wasm"
-  @pinger_key "MDCX6E7RPUXSX5TJUD34CALXJJKV46MWJ2BUJQGWDDR3IYRJIWNUQ5PN"
+  @pinger_key "MDVMDDZP7QZH2T2447DZWX2GJ4563VTTKHQ26R6GNMDYMOUBR2EP3JFL"
 
   # Provider related constants
   @httpserver_contract "wasmcloud:httpserver"
   @httpserver_key "VAG3QITQQ2ODAOWB5TTQSDJ53XK3SHBEIFNK4AYJ5RKAX2UNSCAPHA5M"
   @httpserver_ociref "wasmcloud.azurecr.io/httpserver:0.14.5"
@@ -29,10 +33,12 @@ defmodule HostCoreTest.Constants do
   # Actor accessor methods
   def echo_key, do: @echo_key
   def echo_path, do: @echo_path
   def echo_ociref, do: @echo_ociref
   def echo_ociref_updated, do: @echo_ociref_updated
+  def echo_unpriv_key, do: @echo_unpriv_key
+  def echo_unpriv_path, do: @echo_unpriv_path
   def kvcounter_key, do: @kvcounter_key
   def kvcounter_ociref, do: @kvcounter_ociref
   def kvcounter_path, do: @kvcounter_path
   def kvcounter_unpriv_key, do: @kvcounter_unpriv_key
   def kvcounter_unpriv_path, do: @kvcounter_unpriv_path
diff --git a/wasmcloud_host/chart/Chart.yaml b/wasmcloud_host/chart/Chart.yaml
index 3f9acd5..6506ba8 100644
--- a/wasmcloud_host/chart/Chart.yaml
+++ b/wasmcloud_host/chart/Chart.yaml
@@ -13,8 +13,8 @@ sources:
   - https://github.com/wasmCloud/wasmcloud-otp
 icon: https://github.com/wasmCloud/wasmcloud.com-dev/raw/main/static/images/wasmcloud-logo.png
 
 type: application
 
-version: 0.3.1
+version: 0.3.2
 
-appVersion: "0.52.1"
+appVersion: "0.52.2"
diff --git a/wasmcloud_host/mix.exs b/wasmcloud_host/mix.exs
index a7e5ddb..f262ec4 100644
--- a/wasmcloud_host/mix.exs
+++ b/wasmcloud_host/mix.exs
@@ -1,9 +1,9 @@
 defmodule WasmcloudHost.MixProject do
   use Mix.Project
 
-  @app_vsn "0.52.1"
+  @app_vsn "0.52.2"
 
   def project do
     [
       app: :wasmcloud_host,
       version: @app_vsn,

Vulnerable code:             case perform_invocation(agent, inv["operation"], inv["msg"]) do
  defp perform_invocation(agent, operation, payload) do
        perform_invocation(agent, @op_health_check, payload)
      if Map.get(inv_r, "error") == nil do
  @app_vsn "0.52.1"
    IO.inspect(resp)

        :provider,
        :provider,
        @httpserver_key,
    pinger_key = "MDCX6E7RPUXSX5TJUD34CALXJJKV46MWJ2BUJQGWDDR3IYRJIWNUQ5PN"
    topic = "wasmbus.rpc.#{HostCore.Host.lattice_prefix()}.#{pinger_key}"
    assert byte_size(par.target_bytes |> IO.iodata_to_binary()) > 8_000_000
  @pinger_key "MDCX6E7RPUXSX5TJUD34CALXJJKV46MWJ2BUJQGWDDR3IYRJIWNUQ5PN"
version: 0.3.1
appVersion: "0.52.1"
  @app_vsn "0.52.1"
Fixed code:             case validate_invocation(
                   agent,
                   inv["origin"]["link_name"],
                   inv["origin"]["contract_id"]
                 )
                 |> perform_invocation(inv["operation"], inv["msg"]) do
  # Actor-to-actor calls are always allowed
  defp validate_invocation(agent, "", "") do
    {agent, true}
  end

  # Actor-to-actor calls are always allowed
  defp validate_invocation(agent, nil, nil) do
    {agent, true}
  end

  defp validate_invocation(agent, _link_name, contract_id) do
    caps = Agent.get(agent, fn contents -> contents.claims.caps end)
    {agent, Enum.member?(caps, contract_id)}
  end

  defp perform_invocation({agent, true}, operation, payload) do
  defp perform_invocation({_agent, false}, _operation, _payload) do
    Logger.error("Actor does not have proper capabilities to receive this invocation")
    {:error, "actor is missing capability claims"}
  end

        perform_invocation({agent, true}, @op_health_check, payload)
      if Map.get(inv_r, :error) == nil do
  @app_vsn "0.52.2"
  @echo_unpriv_key HostCoreTest.Constants.echo_unpriv_key()
  @echo_unpriv_path HostCoreTest.Constants.echo_unpriv_path()

  test "unprivileged actor cannot receive undeclared invocations", %{:evt_watcher => evt_watcher} do
    on_exit(fn -> HostCore.Host.purge() end)

    {:ok, bytes} = File.read(@echo_unpriv_path)
    {:ok, _pid} = HostCore.Actors.ActorSupervisor.start_actor(bytes)
    :ok = HostCoreTest.EventWatcher.wait_for_actor_start(evt_watcher, @echo_unpriv_key)

    actor_count =
      Map.get(HostCore.Actors.ActorSupervisor.all_actors(), @echo_unpriv_key)
      |> length

    assert actor_count == 1

    {:ok, bytes} = File.read(@httpserver_path)
    {:ok, par} = HostCore.WasmCloud.Native.par_from_bytes(bytes |> IO.iodata_to_binary())
    httpserver_key = par.claims.public_key
    httpserver_contract = par.contract_id

    # OK to put link definition with no claims information
    assert HostCore.Linkdefs.Manager.put_link_definition(
             @echo_key,
             httpserver_contract,
             @httpserver_link,
             httpserver_key,
             %{PORT: "8083"}
           ) == :ok

    {:ok, _pid} =
      HostCore.Providers.ProviderSupervisor.start_provider_from_file(
        @httpserver_path,
        @httpserver_link
      )

    :ok =
      HostCoreTest.EventWatcher.wait_for_provider_start(
        evt_watcher,
        httpserver_contract,
        @httpserver_link,
        httpserver_key
      )

    # For now, okay to put a link definition without proper claims
    assert HostCore.Linkdefs.Manager.put_link_definition(
             @echo_unpriv_key,
             httpserver_contract,
             @httpserver_link,
             httpserver_key,
             %{PORT: "8084"}
           ) == :ok

    HTTPoison.start()
    {:ok, resp} = HTTPoison.get("http://localhost:8084/foobar")

    assert resp.body == ""
    assert resp.status_code == 500
  end
[build]
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target
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[package]
name = "echo_unpriv"
version = "0.3.3"
authors = [ "wasmcloud Team" ]
edition = "2021"

[lib]
crate-type = ["cdylib", "rlib"]

[dependencies]
async-trait = "0.1"
futures = "0.3"
serde_bytes = "0.11"
serde_json = "1.0"
serde = {version = "1.0", features = ["derive"]}
wasmbus-rpc = "0.5.2"
wasmcloud-interface-httpserver = "0.2.0"

[profile.release]
# Optimize for small code size
lto = true
opt-level = "s"
# examples/actor/echo

PROJECT  = echo
VERSION  = $(shell cargo metadata --no-deps --format-version 1 | jq -r '.packages[] .version' | head -1)
REVISION = 4
# list of all contract claims for actor signing (space-separated)
CLAIMS   = ""
# registry url for our actor
REG_URL  = localhost:5000/v2/$(PROJECT):$(VERSION)
# command to upload to registry (without last wasm parameter)
PUSH_REG_CMD = wash reg push --insecure $(REG_URL)

include actor.mk

# A simple http echo server

This example demonstrates the actor code generation and
a handler for the wasmcloud:httpserver capability contract.

For each http request, the actor returns a json-formatted
string containing fields from the request.


# common makefile rules for building actors
#
# Before including this, your project Makefile should define the following:
#
# Required
# -----------
# PROJECT      - Short name for the project, must be valid filename chars, no spaces
# CLAIMS       - Space-separtaed list of capability contracts to use for signing
#                These should match the capability providers the actor needs to use.
#                For example: 
#                    wasmcloud:httpserver wasmcloud:builtin:logging
# VERSION      - The actor version number, usually semver format, X.Y.Z
# REVISION     - A number that should be incremented with every build,
#                whether or not VERSION has changed
# REG_URL      - Registry url, e.g. 'localhost:5000' or 'wasmcloud.azurecr.io'
# PUSH_REG_CMD - Command to push to registry, for example:
#                    wash reg push --insecure $(REG_URL)
#
# 
# Optional
# -----------
# KEYDIR    - path to private key folder
# CARGO     - cargo binary (name or path), defaults to cargo
# WASH      - wash binary (name or path), defaults to wash
# RUST_DEPS - rust source files
# DIST_WASM - the final file after building and signing
# TARGET_DIR - location of cargo build target folder if not in current dir
#              (if it's in a workspace, it may be elsewhere)
# WASM_TARGET - type of wasm file, defaults to wasm32-unknown-unknown
#

KEYDIR    ?= .keys
CARGO     ?= cargo
WASH      ?= wash
RUST_DEPS ?= Cargo.toml Makefile $(wildcard src/*.rs) .cargo/config.toml
# location of cargo output files
TARGET_DIR ?= target
# location of wasm file after build and signing
DIST_WASM ?= build/$(PROJECT)_s.wasm
WASM_TARGET ?= wasm32-unknown-unknown
UNSIGNED_WASM = $(TARGET_DIR)/$(WASM_TARGET)/release/$(PROJECT).wasm

# verify all required variables are set
check-var-defined = $(if $(strip $($1)),,$(error Required variable "$1" is not defined))

$(call check-var-defined,PROJECT)
$(call check-var-defined,CLAIMS)
$(call check-var-defined,VERSION)
$(call check-var-defined,REVISION)
$(call check-var-defined,REG_URL)
$(call check-var-defined,PUSH_REG_CMD)

all:: $(DIST_WASM)

# default target is signed wasm file
# sign it
$(DIST_WASM): $(UNSIGNED_WASM) Makefile
	@mkdir -p $(dir $@)
	@WASH_ISSUER_KEY=$(shell cat .keys/account.nk) \
	WASH_SUBJECT_KEY=$(shell cat .keys/module.nk) \
	$(WASH) claims sign $< \
		$(foreach claim,$(CLAIMS), -c $(claim) ) \
		--name "$(PROJECT)" --ver $(VERSION) --rev $(REVISION) \
		--destination $@
	mv $@ ../echo_unpriv_s.wasm


# the wasm should be rebuilt if any source files change
$(UNSIGNED_WASM): $(RUST_DEPS)
	$(CARGO) build --release


# push signed wasm file to registry
push: $(DIST_WASM)
	$(PUSH_REG_CMD) $(DIST_WASM)

# tell host to start an instance of the actor
start:
	$(WASH) ctl start actor $(REG_URL) --timeout 3

# NOT WORKING - live actor updates not working yet
# update it (should update revision before doing this)
#update:
#	$(PUSH_REG_CMD) $(DIST_WASM)
#	$(WASH) ctl update actor  \
#        $(shell $(WASH) ctl get hosts -o json | jq -r ".hosts[0].id") \
#	    $(shell make actor_id) \
#	    $(REG_URL) --timeout 3

inventory:
	$(WASH) ctl get inventory $(shell $(WASH) ctl get hosts -o json | jq -r ".hosts[0].id")

ifneq ($(wildcard test-options.json),)
# if this is a test actor, run its start method
# project makefile can set RPC_TEST_TIMEOUT to override default
RPC_TEST_TIMEOUT ?= 2
test::
	$(WASH) call --test --data test-options.json --rpc-timeout $(TEST_TIMEOUT) \
	    $(shell make actor_id) \
	    Start
endif

# generate release build
release::
	cargo build --release

# standard rust commands
check clippy doc:
	$(CARGO) $@

# remove 
clean::
	$(CARGO) clean
	rm -rf build

inspect claims: $(DIST_WASM)
	$(WASH) claims inspect $(DIST_WASM)

# need a signed wasm before we can print the id
_actor_id: $(DIST_WASM)
	@$(WASH) claims inspect $(DIST_WASM) -o json | jq -r .module

actor_id:
	@echo $(shell make _actor_id 2>/dev/null | tail -1)

ifeq ($(wildcard codegen.toml),codegen.toml)
# if there are interfaces here, enable lint and validate rules
lint validate::
	$(WASH) $@
else
lint validate::

endif

.PHONY: actor_id check clean clippy doc release test update
use serde_json::json;
use wasmbus_rpc::actor::prelude::*;
use wasmcloud_interface_httpserver::{HttpRequest, HttpResponse, HttpServer, HttpServerReceiver};

#[derive(Debug, Default, Actor, HealthResponder)]
#[services(Actor, HttpServer)]
struct EchoActor {}

/// Implementation of HttpServer trait methods
#[async_trait]
impl HttpServer for EchoActor {
    async fn handle_request(&self, _ctx: &Context, value: &HttpRequest) -> RpcResult<HttpResponse> {
        let body = json!({
            "method": &value.method,
            "path": &value.path,
            "query_string": &value.query_string,
            "body": &value.body,
        });
        let resp = HttpResponse {
            body: serde_json::to_vec(&body)
                .map_err(|e| RpcError::ActorHandler(format!("serializing response: {}", e)))?,
            ..Default::default()
        };
        Ok(resp)
    }
}
  @pinger_key HostCoreTest.Constants.pinger_key()

        :actor,
        :actor,
        @pinger_key,
    topic = "wasmbus.rpc.#{HostCore.Host.lattice_prefix()}.#{@pinger_key}"
    assert byte_size(par.target_bytes |> IO.iodata_to_binary()) > 1_000
  @echo_unpriv_key "MCRACEYKJLCP7NLVMUTO2SCQ26JFL3Z4TBIXPXDE7KPBI2GEH5DA57L5"
  @echo_unpriv_path "test/fixtures/actors/echo_unpriv_s.wasm"


  @pinger_key "MDVMDDZP7QZH2T2447DZWX2GJ4563VTTKHQ26R6GNMDYMOUBR2EP3JFL"
  def echo_unpriv_key, do: @echo_unpriv_key
  def echo_unpriv_path, do: @echo_unpriv_path
version: 0.3.2
appVersion: "0.52.2"
  @app_vsn "0.52.2"