Node.js up to 0.10.46/0.12.15/4.5.x/6.6.x ServerResponse#writeHead reason Split response splitting

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability was found in Node.js up to 0.10.46/0.12.15/4.5.x/6.6.x (JavaScript Library). It has been declared as critical. This vulnerability affects the function ServerResponse#writeHead. The manipulation of the argument reason with an unknown input leads to a privilege escalation vulnerability (Split). The CWE definition for the vulnerability is CWE-113. The software receives data from an upstream component, but does not neutralize or incorrectly neutralizes CR and LF characters before the data is included in outgoing HTTP headers. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 10/10/2016 by Romain Gaucher (Website). The advisory is available at This vulnerability was named CVE-2016-5325 since 06/07/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 94002 (openSUSE Security Update : nodejs (openSUSE-2016-1172)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169266 (OpenSuSE Security Update for nodejs (openSUSE-SU-2016:2496-1)).

Upgrading to version 0.10.47, 0.12.16, 4.6.0 or 6.7.0 eliminates this vulnerability. A possible mitigation has been published 1 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (94002). See 92519 for similar entry.




CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.1
VulDB Temp Score: 5.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Name: Split
Class: Privilege escalation / Split
CWE: CWE-113 / CWE-93 / CWE-74
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 94002
Nessus Name: openSUSE Security Update : nodejs (openSUSE-2016-1172)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for nodejs openSUSE-SU-2016:2496-1 (nodejs)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Node.js 0.10.47/0.12.16/4.6.0/6.7.0


06/07/2016 🔍
10/10/2016 +125 days 🔍
10/10/2016 +0 days 🔍
10/10/2016 +0 days 🔍
10/11/2016 +1 days 🔍
10/11/2016 +0 days 🔍
10/12/2016 +1 days 🔍
09/22/2022 +2171 days 🔍


Advisory: RHSA-2016:2101
Researcher: Romain Gaucher
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-5325 (🔍)
SecurityFocus: 93483 - Node.js CVE-2016-5325 CRLF Injection Vulnerability

See also: 🔍


Created: 10/11/2016 10:06 AM
Updated: 09/22/2022 05:55 PM
Changes: (4) vulnerability_cvss2_nvd_basescore vulnerability_cvss3_meta_tempscore advisory_identifier countermeasure_patch_url
Complete: 🔍


No comments yet. Languages: en.

Please log in to comment.

Do you know our Splunk app?

Download it now for free!