VDB-119085 · CVE-2017-16118 · BID 104427

forwarded on Node.js Regular Expression resource consumption

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.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in forwarded on Node.js. Affected is an unknown function. Performing a manipulation as part of Regular Expression results in resource consumption. This vulnerability is known as CVE-2017-16118. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in forwarded on Node.js (JavaScript Library) (affected version unknown). It has been classified as problematic. This affects an unknown functionality. The manipulation as part of a Regular Expression leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. The summary by CVE is:

The forwarded module is used by the Express.js framework to handle the X-Forwarded-For header. It is vulnerable to a regular expression denial of service when it's passed specially crafted input to parse. This causes the event loop to be blocked causing a denial of service condition.

The bug was discovered 09/26/2017. The weakness was published 06/07/2018 by Alex (Website). The advisory is shared at securityfocus.com. This vulnerability is uniquely identified as CVE-2017-16118 since 10/29/2017. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 253 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 104427†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

JavaScript Library

Name

forwarded

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/26/2017 🔍
10/29/2017 +33 days 🔍
06/06/2018 +219 days 🔍
06/07/2018 +1 days 🔍
06/07/2018 +0 days 🔍
06/11/2018 +4 days 🔍
02/16/2020 +615 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Alex
Status: Not defined

CVE: CVE-2017-16118 (🔍)
GCVE (CVE): GCVE-0-2017-16118
GCVE (VulDB): GCVE-100-119085
SecurityFocus: 104427 - Node.js 'Forwarded' Module CVE-2017-16118 Denial of Service Vulnerability

Entryinfo

Created: 06/07/2018 10:19
Updated: 02/16/2020 08:06
Changes: 06/07/2018 10:19 (58), 02/16/2020 08:06 (4)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.