This PR contains the following updates:

Package	Change
ws	`7.4.2` -> `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 (https://github.com/websockets/ws/commit/00c425ec77993773d823f018f64a5c44e17023ff) and backported to ws@6.2.2 (https://github.com/websockets/ws/commit/78c676d2a1acefbc05292e9f7ea0a9457704bf1b) and ws@5.2.3 (https://github.com/websockets/ws/commit/76d47c1479002022a3e4357b3c9f0e23a68d4cd2).

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: Disabled by config. Please merge this manually once you are satisfied.

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Codecov Report

Merging #860 (37d16dc) into master (9b9a78f) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #860   +/-   ##
=========================================
  Coverage     69.22%   69.22%           
  Complexity     1165     1165           
=========================================
  Files           323      323           
  Lines          8559     8559           
  Branches       1278     1278           
=========================================
  Hits           5925     5925           
  Misses         2220     2220           
  Partials        414      414

Flag	Coverage Δ
integration	`54.67% <ø> (ø)`
jest	`86.38% <ø> (ø)`
karma	`95.17% <ø> (ø)`
unittests	`90.86% <ø> (ø)`

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adobe / aem-core-cif-components

Update dependency ws to 7.4.6 [SECURITY] - autoclosed #860