# CVE-2019-5739: Node.js 4 and 1 other: Uncontrolled Resource Consumption / Denial of Service

CVE-2019-5739 is fixed in Node.js 6 on 1 platform by Node.js 6 6.17.0 (version 6.17.0), released February 28, 2019. 1 other affected product has no fix yet. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2019-5739
- Priority: High
- CVSS: 7.5
- EPSS: 0.0493
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 28, 2019
- Weakness: CWE-400: Uncontrolled Resource Consumption / Denial of Service
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2019-5739

## Description

Keep-alive HTTP and HTTPS connections can remain open and inactive for up to 2 minutes in Node.js 6.16.0 and earlier. Node.js 8.0.0 introduced a dedicated server.keepAliveTimeout which defaults to 5 seconds. The behavior in Node.js 6.16.0 and earlier is a potential Denial of Service (DoS) attack vector. Node.js 6.17.0 introduces server.keepAliveTimeout and the 5-second default.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Node.js 6 | 6.17.0 | [Node.js 6 6.17.0](https://patchblox.com/security/data/fix/windows-app/openjs.nodejs.6-6.17.0.md) | Feb 28, 2019 |

## No fix yet

| Platform | Product | Status |
|---|---|---|
| Windows apps | Node.js 4 | no-fix |

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