CVE-2024-37890
Denial of service when handling a request with many HTTP headers in ws
- State
- Published
- Severity
- 7.5 High
- Published
- Jun 17, 2024
- Updated
- Aug 2, 2024
- Reserved
- Jun 10, 2024
Description
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 ws@8.17.1 (e55e510) and backported to ws@7.5.10 (22c2876), ws@6.2.3 (eeb76d3), and ws@5.2.4 (4abd8f6). In vulnerable versions of ws, the issue can be mitigated in the following ways: 1. Reduce the maximum allowed length of the request headers using the --max-http-header-size=size and/or the maxHeaderSize options so that no more headers than the server.maxHeadersCount limit can be sent. 2. Set server.maxHeadersCount to 0 so that no limit is applied.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | GitHub_M |
Weaknesses
- CWE-476 NULL Pointer Dereference
Affected Products
| Product | Versions |
|---|---|
wswebsockets |
|
References
- https://github.com/websockets/ws/security/advisories/GHSA-3h5v-q93c-6h6q
- https://github.com/websockets/ws/issues/2230
- https://github.com/websockets/ws/pull/2231
- https://github.com/websockets/ws/commit/22c28763234aa75a7e1b76f5c01c181260d7917f
- https://github.com/websockets/ws/commit/4abd8f6de4b0b65ef80b3ff081989479ed93377e
- https://github.com/websockets/ws/commit/e55e5106f10fcbaac37cfa89759e4cc0d073a52c
- https://github.com/websockets/ws/commit/eeb76d313e2a00dd5247ca3597bba7877d064a63
- https://nodejs.org/api/http.html#servermaxheaderscount
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