Node.js up to 6.14.x/8.13.x/10.13.x/10.2.x HTTP Header Slowloris resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Node.js up to 6.14.x/8.13.x/10.13.x/10.2.x. This affects an unknown part of the component HTTP Header Handler. This manipulation causes resource consumption (Slowloris). This vulnerability is handled as CVE-2018-12122. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Node.js up to 6.14.x/8.13.x/10.13.x/10.2.x (JavaScript Library). Affected by this vulnerability is an unknown functionality of the component HTTP Header Handler. The manipulation with an unknown input leads to a resource consumption vulnerability (Slowloris). The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Slowloris HTTP Denial of Service: An attacker can cause a Denial of Service (DoS) by sending headers very slowly keeping HTTP or HTTPS connections and associated resources alive for a long period of time.

The bug was discovered 11/28/2018. The weakness was released 11/28/2018 as November 2018 Security Releases as confirmed blog post (Website). The advisory is shared at nodejs.org. The public release was coordinated with the project team. This vulnerability is known as CVE-2018-12122 since 06/11/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue. The advisory points out:

All versions of Node.js 6 and later are vulnerable and the severity is LOW. An attacker can cause a Denial of Service (DoS) by sending headers very slowly keeping HTTP or HTTPS connections and associated resources alive for a long period of time. Attack potential is mitigated by the use of a load balancer or other proxy layer.

The vulnerability scanner Nessus provides a plugin with the ID 119511 (FreeBSD : node.js -- multiple vulnerabilities (2a86f45a-fc3c-11e8-a414-00155d006b02)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172114 (OpenSUSE Security Update for nodejs6 (openSUSE-SU-2019:0234-1)). The advisory illustrates:

A timeout of 40 seconds now applies to servers receiving HTTP headers. This value can be adjusted with server.headersTimeout. Where headers are not completely received within this period, the socket is destroyed on the next received chunk. In conjunction with server.setTimeout(), this aids in protecting against excessive resource retention and possible Denial of Service.

Upgrading to version 6.15.0, 8.14.0, 10.14.0 or 11.3.0 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119511) and SecurityFocus (BID 106043†). Entries connected to this vulnerability are available at VDB-126937, VDB-127258, VDB-127259 and VDB-127260. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Slowloris
Class: Resource consumption / Slowloris
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: 🔍

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Nessus ID: 119511
Nessus Name: FreeBSD : node.js -- multiple vulnerabilities (2a86f45a-fc3c-11e8-a414-00155d006b02)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Node.js 6.15.0/8.14.0/10.14.0/11.3.0

Timelineinfo

06/11/2018 🔍
11/28/2018 +170 days 🔍
11/28/2018 +0 days 🔍
11/28/2018 +0 days 🔍
11/28/2018 +0 days 🔍
11/28/2018 +0 days 🔍
11/29/2018 +1 days 🔍
12/10/2018 +11 days 🔍
12/13/2024 +2195 days 🔍

Sourcesinfo

Advisory: November 2018 Security Releases
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-12122 (🔍)
GCVE (CVE): GCVE-0-2018-12122
GCVE (VulDB): GCVE-100-127261
SecurityFocus: 106043 - Node.js HTTP Header Multiple Denial of Service Vulnerabilities

See also: 🔍

Entryinfo

Created: 11/29/2018 07:44
Updated: 12/13/2024 17:42
Changes: 11/29/2018 07:44 (79), 04/15/2020 18:53 (4), 12/13/2024 17:42 (18)
Complete: 🔍
Cache ID: 216::103

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

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