CVE-2021-32640
Published May 25, 2021
Last updated a year ago
Overview
- Description
- ws is an open source WebSocket client and server library for Node.js. A specially crafted value of the `Sec-Websocket-Protocol` header can be used to significantly slow down a ws server. The vulnerability has been fixed in ws@7.4.6 (https://github.com/websockets/ws/commit/00c425ec77993773d823f018f64a5c44e17023ff). 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.
- Source
- security-advisories@github.com
- NVD status
- Modified
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 5.3
- Impact score
- 1.4
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 5
- Impact score
- 2.9
- Exploitability score
- 10
- Vector string
- AV:N/AC:L/Au:N/C:N/I:N/A:P
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:ws_project:ws:*:*:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "17BC31A7-9CB8-47EC-89C4-A4809CE9E47D",
"versionEndExcluding": "6.2.2",
"versionStartIncluding": "5.0.0"
},
{
"criteria": "cpe:2.3:a:ws_project:ws:*:*:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "5CCD3F79-60EA-49AB-B02C-327182F655A8",
"versionEndExcluding": "7.4.6",
"versionStartIncluding": "7.0.0"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:netapp:e-series_performance_analyzer:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "24B8DB06-590A-4008-B0AB-FCD1401C77C6"
}
],
"operator": "OR"
}
]
}
]