chore(deps): update dependency ws to 7.4.6 [security]

[renovate]

This PR contains the following updates:

Package	Change
ws	7.3.0 -> 7.4.6

GitHub Vulnerability Alerts

CVE-2021-32640

Impact

A specially crafted value of the Sec-Websocket-Protocol header can be used to significantly slow down a ws server.

Proof of concept

for (const length of [1000, 2000, 4000, 8000, 16000, 32000]) {
  const value = 'b' + ' '.repeat(length) + 'x';
  const start = process.hrtime.bigint();

  value.trim().split(/ *, */);

  const end = process.hrtime.bigint();

  console.log('length = %d, time = %f ns', length, end - start);
}

Patches

The vulnerability was fixed in ws@7.4.6 (websockets/ws@00c425e) and backported to ws@6.2.2 (websockets/ws@78c676d) and ws@5.2.3 (websockets/ws@76d47c1).

Workarounds

In vulnerable versions of ws, the issue can be mitigated by reducing the maximum allowed length of the request headers using the --max-http-header-size=size and/or the maxHeaderSize options.

Credits

The vulnerability was responsibly disclosed along with a fix in private by Robert McLaughlin from University of California, Santa Barbara.

---

Configuration

📅 Schedule: "" (UTC).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box.

---

This PR has been generated by WhiteSource Renovate. View repository job log here.

[codecov-commenter]

Codecov Report

Merging #159 (597dd7c) into master (a05be53) will decrease coverage by 2.38%.
The diff coverage is n/a.

❗ Current head 597dd7c differs from pull request most recent head a8c9010. Consider uploading reports for the commit a8c9010 to get more accurate results

@@            Coverage Diff             @@
##           master     #159      +/-   ##
==========================================
- Coverage   85.71%   83.33%   -2.39%     
==========================================
  Files           4        4              
  Lines          84      102      +18     
  Branches       14       17       +3     
==========================================
+ Hits           72       85      +13     
- Misses          8       13       +5     
  Partials        4        4              

Impacted Files	Coverage Δ
src/entity.js	80.23% <0.00%> (-2.63%)	⬇️
src/value.js	100.00% <0.00%> (ø)
src/entityProxy.js	100.00% <0.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a05be53...a8c9010. Read the comment docs.