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 [email protected] (websockets/ws@00c425e) and backported to [email protected] (websockets/ws@78c676d) and [email protected] (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.

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Configuration

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[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)

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