Vulnerability identifier: #VU42456

Vulnerability risk: Medium

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:F/RL:O/RC:C]

CVE-ID: CVE-2013-4450

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Node.js
Server applications / Web servers

Vendor: Node.js Foundation

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The HTTP server in Node.js 0.10.x before 0.10.21 and 0.8.x before 0.8.26 allows remote attackers to cause a denial of service (memory and CPU consumption) by sending a large number of pipelined requests without reading the response.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Node.js: 0.8.0 - 0.8.25, 0.10.0 - 0.10.20

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External links
http://blog.nodejs.org/2013/10/18/node-v0-10-21-stable/
http://blog.nodejs.org/2013/10/18/node-v0-8-26-maintenance/
http://lists.opensuse.org/opensuse-updates/2013-12/msg00051.html
http://rhn.redhat.com/errata/RHSA-2013-1842.html
http://www.openwall.com/lists/oss-security/2013/10/20/1
http://www.securityfocus.com/bid/63229
http://github.com/joyent/node/issues/6214
http://github.com/rapid7/metasploit-framework/pull/2548
http://groups.google.com/forum/#!topic/nodejs/NEbweYB0ei0
http://kb.juniper.net/JSA10783

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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. However, a fully functional exploit for this vulnerability is available.