DoS due to excessively large websocket message in ws

Also known as GHSA-6663-c963-2gqg

Published 8 y ago 2018-05-31 · modified 4 mo ago 2026-06-17 · JSON

CVSS

7.5

v3.0 · NVD

CISA KEV

not known exploited

EPSS

7.4%

percentile 94%

Public exploits

Metasploit

ws is a "simple to use, blazing fast and thoroughly tested websocket client, server and console for node.js, up-to-date against RFC-6455". By sending an overly long websocket payload to a `ws` server, it is possible to crash the node process. This affects ws 1.1.0 and earlier.

Exploit prediction (EPSS)

7.42% probability of exploitation in the next 30 days, higher than 94% of all scored CVEs.

Exploits and detections

Metasploit auxiliary/dos/http/ws_dos ws - Denial of Service · metasploit auxiliary, normal rank

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.0	7.5	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`
NVD	2.0	5.0	`AV:N/AC:L/Au:N/C:N/I:N/A:P`

Affected packages

Ecosystem	Package	Affected	Fixed in
npm	`ws`	<1.1.1	1.1.1

Affected products

HackerOne ws node module

Classification

Weakness

CWE-400 Uncontrolled Resource Consumption
CWE-20 Improper Input Validation

References

github.com /nodejs/node/issues/7388 · x_refsource_MISC, x_transferred
nodesecurity.io /advisories/120 · x_refsource_MISC, x_transferred
nvd.nist.gov /vuln/detail/CVE-2016-10542 · advisory
github.com /advisories/GHSA-6663-c963-2gqg · advisory
npmjs.com /advisories/120 · web

Sources

CVE List: CVE-2016-10542
GitHub Advisory: GHSA-6663-c963-2gqg
NVD: CVE-2016-10542

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.

Summary