CVE-2021-32640
The vulnerability has been fixed in ws@7.4.6 (https://github.com/websockets/ws/commit/00c425ec77993773d823f018f64a5c44e17023ff).
Does this matter?
Lower severity and a low EPSS score (2.82%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- EPSS
- 2.82% probability · 86th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- ws project/ws · netapp/e-series performance analyzer
- Source
- security-advisories@github.com
References
- https://github.com/websockets/ws/commit/00c425ec77993773d823f018f64a5c44e17023ffPatch, Third Party Advisory
- https://github.com/websockets/ws/security/advisories/GHSA-6fc8-4gx4-v693Exploit, Mitigation, Patch, Third Party Advisory
- https://lists.apache.org/thread.html/rdfa7b6253c4d6271e31566ecd5f30b7ce1b8fb2c89d52b8c4e0f4e30%40%3Ccommits.tinkerpop.apache.org%3E
- https://security.netapp.com/advisory/ntap-20210706-0005/Third Party Advisory
- https://github.com/websockets/ws/commit/00c425ec77993773d823f018f64a5c44e17023ffPatch, Third Party Advisory
- https://github.com/websockets/ws/security/advisories/GHSA-6fc8-4gx4-v693Exploit, Mitigation, Patch, Third Party Advisory
- https://lists.apache.org/thread.html/rdfa7b6253c4d6271e31566ecd5f30b7ce1b8fb2c89d52b8c4e0f4e30%40%3Ccommits.tinkerpop.apache.org%3E
- https://security.netapp.com/advisory/ntap-20210706-0005/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.