CVE-2024-37890 — ws is an open source WebSocket client and server for Node

ws is an open source WebSocket client and server for Node.js. A request with a number of headers exceeding theserver.maxHeadersCount threshold could be used to crash a ws server. The vulnerability was fixed in [email protected] (e55e510) and backported to [email protected] (22c2876), [email protected] (e

01What is this vulnerability?

ws is an open source WebSocket client and server for Node.js. A request with a number of headers exceeding theserver.maxHeadersCount threshold could be used to crash a ws server. The vulnerability was fixed in [email protected] (e55e510) and backported to [email protected] (22c2876), [email protected] (eeb76d3), and [email protected] (4abd8f6). In vulnerable versions of ws, the issue can be mitigated in the following ways: 1…

02Affected products

Vendor	Product	Versions
websockets	ws	>= 2.1.0, < 5.2.4, >= 6.0.0, < 6.2.3, >= 7.0.0, < 7.5.10, >= 8.0.0, < 8.17.1

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2024-06-17T19:09:02.127Z
• Last modified: 2024-08-02T03:57:40.022Z

09References

• github.com — https://github.com/websockets/ws/security/advisories/GHSA-3h5v-q93c-6h6q
• github.com — https://github.com/websockets/ws/issues/2230
• github.com — https://github.com/websockets/ws/pull/2231
• github.com — https://github.com/websockets/ws/commit/22c28763234aa75a7e1b76f5c01c181260d7917f
• github.com — https://github.com/websockets/ws/commit/4abd8f6de4b0b65ef80b3ff081989479ed93377e
• github.com — https://github.com/websockets/ws/commit/e55e5106f10fcbaac37cfa89759e4cc0d073a52c
• github.com — https://github.com/websockets/ws/commit/eeb76d313e2a00dd5247ca3597bba7877d064a63
• nodejs.org — https://nodejs.org/api/http.html#servermaxheaderscount