Input validation error in Node.js

1) Input validation error

EUVDB-ID: #VU32063

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 - Improper input validation

Exploit availability: No

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 - 6.11.4

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/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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