backport of commit 0c9b963963

internal/daemon/controller/handlers/roles/role_service.go

@@ -123,10 +123,6 @@ func (s Service) ListRoles(ctx context.Context, req *pbs.ListRolesRequest) (*pbs
 	if err != nil {
 		return nil, err
 	}
-	// If no scopes match, return an empty response
-	if len(scopeIds) == 0 {
-		return &pbs.ListRolesResponse{}, nil
-	}
 
 	pageSize := int(s.maxPageSize)
 	// Use the requested page size only if it is smaller than

internal/daemon/controller/handlers/roles/role_service_test.go

@@ -760,6 +760,28 @@ func TestListPagination(t *testing.T) {
 			protocmp.IgnoreFields(&pbs.ListRolesResponse{}, "list_token"),
 		),
 	)
+
+	// Create unauthenticated user
+	unauthAt := authtoken.TestAuthToken(t, conn, kms, oWithRoles.GetPublicId())
+	unauthR := iam.TestRole(t, conn, pWithRoles.GetPublicId())
+	_ = iam.TestUserRole(t, conn, unauthR.GetPublicId(), unauthAt.GetIamUserId())
+
+	// Make a request with the unauthenticated user,
+	// ensure the response contains the pagination parameters.
+	requestInfo = authpb.RequestInfo{
+		TokenFormat: uint32(auth.AuthTokenTypeBearer),
+		PublicId:    unauthAt.GetPublicId(),
+		Token:       unauthAt.GetToken(),
+	}
+	requestContext = context.WithValue(context.Background(), requests.ContextRequestInformationKey, &requests.RequestContext{})
+	ctx = auth.NewVerifierContext(requestContext, iamRepoFn, tokenRepoFn, serversRepoFn, kms, &requestInfo)
+
+	_, err = a.ListRoles(ctx, &pbs.ListRolesRequest{
+		ScopeId:   "global",
+		Recursive: true,
+	})
+	require.Error(t, err)
+	assert.ErrorIs(t, handlers.ForbiddenError(), err)
 }
 
 func TestDelete(t *testing.T) {