Resource exhaustion in Websockets Ws
CVE-2021-32640
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…
Vulnerability class: DoS (Denial of Service)
EPSS: 0.012 (78.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Websockets Ws — versions >= 5.0.0 <= 7.4.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/websockets/ws/security/advisories/GHSA-6fc8-4gx4-v693 (x_refsource_CONFIRM)
- github.com/websockets/ws/commit/00c425ec77993773d823f018f64a5c44e17023ff (x_refsource_MISC)
- [tinkerpop-commits] 20210701 [tinkerpop] 01/03: Bumped ws to 6.2.2 to address CVE-2021-32640 CTR (mailing-list, x_refsource_MLIST)
- security.netapp.com/advisory/ntap-20210706-0005/ (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2021-32640?
- CVE-2021-32640 is a medium-severity vulnerability in Websockets Ws, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2021-05-25.
- How severe is CVE-2021-32640?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-32640 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.