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

[renovate]

This PR contains the following updates:

Package	Change
ws	7.4.0 -> 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 #180 (6c33c3c) into master (a5cdead) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #180   +/-   ##
=======================================
  Coverage   81.65%   81.65%           
=======================================
  Files           6        6           
  Lines         109      109           
  Branches       24       24           
=======================================
  Hits           89       89           
  Misses         20       20           

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