Viacheslav Klimov
5 months ago
committed by
GitHub
GitHub
11 changed files with 226 additions and 5 deletions
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/** |
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* Copyright © 2016-2026 The Thingsboard Authors |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package org.thingsboard.server.msa.security; |
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import com.fasterxml.jackson.databind.JsonNode; |
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import org.testng.annotations.AfterClass; |
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import org.testng.annotations.BeforeClass; |
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import org.testng.annotations.Test; |
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import org.thingsboard.server.msa.AbstractContainerTest; |
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import static org.assertj.core.api.Assertions.assertThat; |
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public class JsExecutorSandboxIsolationTest extends AbstractContainerTest { |
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@BeforeClass |
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public void beforeClass() { |
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testRestClient.login("tenant@thingsboard.org", "tenant"); |
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} |
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@AfterClass |
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public void afterClass() { |
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testRestClient.resetToken(); |
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} |
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/** |
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* Black-box regression for JVN#16937365: a tenant admin must not be able |
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* to escape the tb-js-executor sandbox via the host-realm prototype chain |
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* exposed through the script's `args` argument. Runs against the live |
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* docker-compose deployment, which uses script.use_sandbox=true and |
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* JS_EVALUATOR=remote (Kafka -> tb-js-executor). |
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*/ |
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@Test |
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public void testRuleChainScriptCannotReachHostProcess() { |
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JsonNode response = testRestClient.testRuleChainScript(""" |
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{ |
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"script": "var F = args.constructor.constructor; var p = F('return process')(); return { reachedHost: !!(p && p.mainModule) };", |
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"scriptType": "update", |
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"argNames": ["msg", "metadata", "msgType"], |
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"msg": "{}", |
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"metadata": {}, |
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"msgType": "POST_TELEMETRY_REQUEST" |
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} |
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"""); |
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// The sandboxed run must reject the escape attempt: the host `process`
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// global is not defined inside the sandbox realm, so executing the
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// synthesized function `F("return process")` throws.
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assertThat(response.has("error")).isTrue(); |
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String error = response.get("error").asText(); |
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assertThat(error) |
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.as("sandbox must block host-realm reach via args.constructor.constructor; full error: %s", error) |
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.contains("process is not defined"); |
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// Defense in depth: even if the script somehow returned, output must
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// not indicate that the host process was reached.
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if (response.hasNonNull("output")) { |
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assertThat(response.get("output").asText()).doesNotContain("\"reachedHost\":true"); |
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} |
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} |
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} |
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@ -0,0 +1,83 @@ |
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///
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/// Copyright © 2016-2026 The Thingsboard Authors
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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import { describe, test } from 'node:test'; |
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import assert from 'node:assert/strict'; |
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import { JsExecutor } from '../api/jsExecutor'; |
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// describe('js-executor') groups all cases under <testsuite name="js-executor">
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// in the JUnit XML so they show up under that suite in TeamCity's Tests tab,
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// alongside thousands of Java tests.
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describe('js-executor', () => { |
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test('sandbox isolates args from host realm (JVN#16937365)', async () => { |
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const exec = new JsExecutor(true); |
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const script = await exec.compileScript(`function(msg, metadata, msgType){
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var F = args.constructor.constructor; |
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var p = F("return process")(); |
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return p && p.mainModule ? 'reached-host' : 'isolated'; |
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}`);
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await assert.rejects( |
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exec.executeScript(script, ['{}', '{}', 'POST_TELEMETRY_REQUEST'], 5000), |
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/process is not defined/, |
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'host process must not be reachable from inside the sandbox', |
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); |
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}); |
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test('sandbox passes string args through unchanged', async () => { |
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const exec = new JsExecutor(true); |
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const script = await exec.compileScript(`function(msg, metadata, msgType){
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return { msgIsString: typeof msg === 'string', count: args.length, first: args[0] }; |
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}`);
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const out = await exec.executeScript(script, ['hello', '{}', 'X'], 5000); |
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// Field-by-field: the returned object is owned by the sandbox realm, so
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// its prototype is not the host Object.prototype and deepStrictEqual would
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// reject it on prototype mismatch even when the values match.
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assert.equal(out.msgIsString, true); |
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assert.equal(out.count, 3); |
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assert.equal(out.first, 'hello'); |
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}); |
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// The use_sandbox=false path is intentionally non-isolating: scripts compile
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// and run in the host realm via vm.compileFunction. The two tests below codify
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// that documented contract so any future behavior change shows up as a test
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// failure and forces a deliberate update of the docs and threat model.
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test('non-sandbox path does not isolate from host realm (documented contract)', async () => { |
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const exec = new JsExecutor(false); |
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const script = await exec.compileScript(`function(msg, metadata, msgType){
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// Non-destructive host-reach probe: typeof process.platform is 'string'
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// only if the host process object is reachable.
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var F = args.constructor.constructor; |
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return F('return typeof process.platform')(); |
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}`);
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const out = await exec.executeScript(script, ['{}', '{}', 'X']); |
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assert.equal(out, 'string', |
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'use_sandbox=false is documented as non-isolating; if this fails, the path was changed and docs/threat model must be updated'); |
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}); |
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test('non-sandbox path passes string args through unchanged', async () => { |
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const exec = new JsExecutor(false); |
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const script = await exec.compileScript(`function(msg, metadata, msgType){
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return { msgIsString: typeof msg === 'string', count: args.length, first: args[0] }; |
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}`);
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const out = await exec.executeScript(script, ['hello', '{}', 'X']); |
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assert.equal(out.msgIsString, true); |
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assert.equal(out.count, 3); |
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assert.equal(out.first, 'hello'); |
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}); |
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}); // describe('js-executor')
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