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.
Release Notes
websockets/ws
### [`v7.4.6`](https://togithub.com/websockets/ws/releases/tag/7.4.6)
[Compare Source](https://togithub.com/websockets/ws/compare/7.4.5...7.4.6)
### Bug fixes
- Fixed a ReDoS vulnerability ([`00c425e`](https://togithub.com/websockets/ws/commit/00c425ec)).
A specially crafted value of the `Sec-Websocket-Protocol` header could be used
to significantly slow down a ws server.
```js
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);
}
```
The vulnerability was responsibly disclosed along with a fix in private by
[Robert McLaughlin](https://togithub.com/robmcl4) from University of California, Santa Barbara.
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`](https://nodejs.org/api/cli.html#cli_max_http_header_size_size)
and/or the [`maxHeaderSize`](https://nodejs.org/api/http.html#http_http_createserver_options_requestlistener) options.
### [`v7.4.5`](https://togithub.com/websockets/ws/releases/tag/7.4.5)
[Compare Source](https://togithub.com/websockets/ws/compare/7.4.4...7.4.5)
### Bug fixes
- UTF-8 validation is now done even if `utf-8-validate` is not installed
([`23ba6b2`](https://togithub.com/websockets/ws/commit/23ba6b29)).
- Fixed an edge case where `websocket.close()` and `websocket.terminate()` did
not close the connection ([`67e25ff`](https://togithub.com/websockets/ws/commit/67e25ff5)).
### [`v7.4.4`](https://togithub.com/websockets/ws/releases/tag/7.4.4)
[Compare Source](https://togithub.com/websockets/ws/compare/7.4.3...7.4.4)
### Bug fixes
- Fixed a bug that could cause the process to crash when using the
permessage-deflate extension ([`9277437`](https://togithub.com/websockets/ws/commit/92774377)).
### [`v7.4.3`](https://togithub.com/websockets/ws/releases/tag/7.4.3)
[Compare Source](https://togithub.com/websockets/ws/compare/7.4.2...7.4.3)
### Bug fixes
- The deflate/inflate stream is now reset instead of reinitialized when context
takeover is disabled ([#1840](https://togithub.com/websockets/ws/issues/1840)).
### [`v7.4.2`](https://togithub.com/websockets/ws/releases/tag/7.4.2)
[Compare Source](https://togithub.com/websockets/ws/compare/7.4.1...7.4.2)
### Bug fixes
- Silenced a deprecation warning ([`a2c0d44`](https://togithub.com/websockets/ws/commit/a2c0d447)).
### [`v7.4.1`](https://togithub.com/websockets/ws/releases/tag/7.4.1)
[Compare Source](https://togithub.com/websockets/ws/compare/7.4.0...7.4.1)
### Bug fixes
- Added a workaround for a double `'error'` event bug in Node.js < 13 which
caused an uncaught error during the WebSocket handshake ([`38d6ab3`](https://togithub.com/websockets/ws/commit/38d6ab3b)).
### [`v7.4.0`](https://togithub.com/websockets/ws/releases/tag/7.4.0)
[Compare Source](https://togithub.com/websockets/ws/compare/7.3.1...7.4.0)
### Features
- The callback of `WebSocketServer.prototype.handleUpgrade()` now takes the
client HTTP GET request as second argument ([`7d39f19`](https://togithub.com/websockets/ws/commit/7d39f19e)).
### Bug fixes
- Read-only properties are now read-only ([`eabed8f`](https://togithub.com/websockets/ws/commit/eabed8fc)).
- The `CONNECTING`, `OPEN`, `CLOSING`, `CLOSED`, `binaryType`, `bufferedAmount`,
`extensions`, `onclose`, `onerror`, `onmessage`, `onopen`, `protocol`,
`readyState`, and `url` properties are now enumerable ([`2069e68`](https://togithub.com/websockets/ws/commit/2069e684)).
### [`v7.3.1`](https://togithub.com/websockets/ws/releases/tag/7.3.1)
[Compare Source](https://togithub.com/websockets/ws/compare/7.3.0...7.3.1)
### Bug fixes
- Improved `websocket.bufferedAmount` accuracy ([`e1349c0`](https://togithub.com/websockets/ws/commit/e1349c04), [`a162942`](https://togithub.com/websockets/ws/commit/a1629426)).
### [`v7.3.0`](https://togithub.com/websockets/ws/releases/tag/7.3.0)
[Compare Source](https://togithub.com/websockets/ws/compare/7.2.5...7.3.0)
### Features
- `WebSocket.prototype.addEventListener()` now supports the `once` option ([#1754](https://togithub.com/websockets/ws/issues/1754)).
### [`v7.2.5`](https://togithub.com/websockets/ws/releases/tag/7.2.5)
[Compare Source](https://togithub.com/websockets/ws/compare/7.2.3...7.2.5)
### Bug fixes
- Fixed compatibility with Node.js master ([`651d662`](https://togithub.com/websockets/ws/commit/651d6627)).
Configuration
📅 Schedule: Branch creation - "" (UTC), Automerge - At any time (no schedule defined).
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ 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 Mend Renovate. View repository job log here.
This PR contains the following updates:
7.2.3
->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
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 themaxHeaderSize
options.Credits
The vulnerability was responsibly disclosed along with a fix in private by Robert McLaughlin from University of California, Santa Barbara.
Release Notes
websockets/ws
### [`v7.4.6`](https://togithub.com/websockets/ws/releases/tag/7.4.6) [Compare Source](https://togithub.com/websockets/ws/compare/7.4.5...7.4.6) ### Bug fixes - Fixed a ReDoS vulnerability ([`00c425e`](https://togithub.com/websockets/ws/commit/00c425ec)). A specially crafted value of the `Sec-Websocket-Protocol` header could be used to significantly slow down a ws server. ```js 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); } ``` The vulnerability was responsibly disclosed along with a fix in private by [Robert McLaughlin](https://togithub.com/robmcl4) from University of California, Santa Barbara. 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`](https://nodejs.org/api/cli.html#cli_max_http_header_size_size) and/or the [`maxHeaderSize`](https://nodejs.org/api/http.html#http_http_createserver_options_requestlistener) options. ### [`v7.4.5`](https://togithub.com/websockets/ws/releases/tag/7.4.5) [Compare Source](https://togithub.com/websockets/ws/compare/7.4.4...7.4.5) ### Bug fixes - UTF-8 validation is now done even if `utf-8-validate` is not installed ([`23ba6b2`](https://togithub.com/websockets/ws/commit/23ba6b29)). - Fixed an edge case where `websocket.close()` and `websocket.terminate()` did not close the connection ([`67e25ff`](https://togithub.com/websockets/ws/commit/67e25ff5)). ### [`v7.4.4`](https://togithub.com/websockets/ws/releases/tag/7.4.4) [Compare Source](https://togithub.com/websockets/ws/compare/7.4.3...7.4.4) ### Bug fixes - Fixed a bug that could cause the process to crash when using the permessage-deflate extension ([`9277437`](https://togithub.com/websockets/ws/commit/92774377)). ### [`v7.4.3`](https://togithub.com/websockets/ws/releases/tag/7.4.3) [Compare Source](https://togithub.com/websockets/ws/compare/7.4.2...7.4.3) ### Bug fixes - The deflate/inflate stream is now reset instead of reinitialized when context takeover is disabled ([#1840](https://togithub.com/websockets/ws/issues/1840)). ### [`v7.4.2`](https://togithub.com/websockets/ws/releases/tag/7.4.2) [Compare Source](https://togithub.com/websockets/ws/compare/7.4.1...7.4.2) ### Bug fixes - Silenced a deprecation warning ([`a2c0d44`](https://togithub.com/websockets/ws/commit/a2c0d447)). ### [`v7.4.1`](https://togithub.com/websockets/ws/releases/tag/7.4.1) [Compare Source](https://togithub.com/websockets/ws/compare/7.4.0...7.4.1) ### Bug fixes - Added a workaround for a double `'error'` event bug in Node.js < 13 which caused an uncaught error during the WebSocket handshake ([`38d6ab3`](https://togithub.com/websockets/ws/commit/38d6ab3b)). ### [`v7.4.0`](https://togithub.com/websockets/ws/releases/tag/7.4.0) [Compare Source](https://togithub.com/websockets/ws/compare/7.3.1...7.4.0) ### Features - The callback of `WebSocketServer.prototype.handleUpgrade()` now takes the client HTTP GET request as second argument ([`7d39f19`](https://togithub.com/websockets/ws/commit/7d39f19e)). ### Bug fixes - Read-only properties are now read-only ([`eabed8f`](https://togithub.com/websockets/ws/commit/eabed8fc)). - The `CONNECTING`, `OPEN`, `CLOSING`, `CLOSED`, `binaryType`, `bufferedAmount`, `extensions`, `onclose`, `onerror`, `onmessage`, `onopen`, `protocol`, `readyState`, and `url` properties are now enumerable ([`2069e68`](https://togithub.com/websockets/ws/commit/2069e684)). ### [`v7.3.1`](https://togithub.com/websockets/ws/releases/tag/7.3.1) [Compare Source](https://togithub.com/websockets/ws/compare/7.3.0...7.3.1) ### Bug fixes - Improved `websocket.bufferedAmount` accuracy ([`e1349c0`](https://togithub.com/websockets/ws/commit/e1349c04), [`a162942`](https://togithub.com/websockets/ws/commit/a1629426)). ### [`v7.3.0`](https://togithub.com/websockets/ws/releases/tag/7.3.0) [Compare Source](https://togithub.com/websockets/ws/compare/7.2.5...7.3.0) ### Features - `WebSocket.prototype.addEventListener()` now supports the `once` option ([#1754](https://togithub.com/websockets/ws/issues/1754)). ### [`v7.2.5`](https://togithub.com/websockets/ws/releases/tag/7.2.5) [Compare Source](https://togithub.com/websockets/ws/compare/7.2.3...7.2.5) ### Bug fixes - Fixed compatibility with Node.js master ([`651d662`](https://togithub.com/websockets/ws/commit/651d6627)).Configuration
📅 Schedule: Branch creation - "" (UTC), Automerge - At any time (no schedule defined).
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ 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.
This PR has been generated by Mend Renovate. View repository job log here.