axios/test/unit/regression/SNYK-JS-AXIOS-1038255.js

// https://snyk.io/vuln/SNYK-JS-AXIOS-1038255
// https://github.com/axios/axios/issues/3407
// https://github.com/axios/axios/issues/3369

import axios from '../../../index.js';
import http from 'http';
import assert from 'assert';

const PROXY_PORT = 4777;
const EVIL_PORT = 4666;

describe('Server-Side Request Forgery (SSRF)', () => {
  let fail = false;
  let proxy;
  let server;
  let location;
  beforeEach(() => {
    server = http
      .createServer(function (req, res) {
        fail = true;
        res.end('rm -rf /');
      })
      .listen(EVIL_PORT);

    proxy = http
      .createServer(function (req, res) {
        if (
          new URL(req.url, 'http://' + req.headers.host).toString() ===
          'http://localhost:' + EVIL_PORT + '/'
        ) {
          return res.end(
            JSON.stringify({
              msg: 'Protected',
              headers: req.headers,
            })
          );
        }
        res.writeHead(302, { location });
        res.end();
      })
      .listen(PROXY_PORT);
  });
  afterEach(() => {
    server.close();
    proxy.close();
  });

  it('obeys proxy settings when following redirects', async () => {
    location = 'http://localhost:' + EVIL_PORT;

    let response = await axios({
      method: 'get',
      url: 'http://www.google.com/',
      proxy: {
        host: 'localhost',
        port: PROXY_PORT,
        auth: {
          username: 'sam',
          password: 'password',
        },
      },
    });

    assert.strictEqual(fail, false);
    assert.strictEqual(response.data.msg, 'Protected');
    assert.strictEqual(response.data.headers.host, 'localhost:' + EVIL_PORT);
    assert.strictEqual(
      response.data.headers['proxy-authorization'],
      'Basic ' + Buffer.from('sam:password').toString('base64')
    );

    return response;
  });
});