Vulnerability identifier: #VU32063

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-14919

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Node.js
Server applications / Web servers

Vendor: Node.js Foundation

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

Node.js before 4.8.5, 6.x before 6.11.5, and 8.x before 8.8.0 allows remote attackers to cause a denial of service (uncaught exception and crash) by leveraging a change in the zlib module 1.2.9 making 8 an invalid value for the windowBits parameter.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Node.js: 4.8.0 - 4.8.4, 6.11.0 - 6.11.4

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External links
http://www.securityfocus.com/bid/101881
http://nodejs.org/en/blog/release/v4.8.5/
http://nodejs.org/en/blog/release/v6.11.5/
http://nodejs.org/en/blog/release/v8.8.0/
http://nodejs.org/en/blog/vulnerability/oct-2017-dos/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.