Update dependency ws to 6.2.2 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change
ws	6.2.1 -> 6.2.2

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.

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[codeclimate]

Code Climate has analyzed commit ee72853 and detected 0 issues on this pull request.

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[codecov]

Codecov Report

Merging #647 (ee72853) into master (ba96c64) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #647   +/-   ##
=======================================
  Coverage   36.06%   36.06%           
=======================================
  Files           3        3           
  Lines          61       61           
  Branches        8        8           
=======================================
  Hits           22       22           
  Misses         39       39           

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[satanTime]

v1.1.3 has been released and contains a fix for the issue. Feel free to reopen the issue or to submit a new one if you meet any problems.