// For flags

CVE-2018-12121

nodejs: Denial of Service with large HTTP headers

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Denial of Service with large HTTP headers: By using a combination of many requests with maximum sized headers (almost 80 KB per connection), and carefully timed completion of the headers, it is possible to cause the HTTP server to abort from heap allocation failure. Attack potential is mitigated by the use of a load balancer or other proxy layer.

Node.js: Todas las versiones anteriores a la 6.15.0, 8.14.0, 10.14.0 y 11.3.0: Denegación de servicio (DoS) con cabeceras HTTP grandes. Mediante la combinación de muchas peticiones con cabeceras de tamaño máximo (casi 80 KB por conexión) y al terminar a su debido tiempo las cabeceras, es posible provocar que el servidor HTTP aborte el fallo de asignación de memoria dinámica (heap). El potencial del ataque se ve mitigado por el uso de un balance de carga u otra capa del proxy.

The http-parser package provides a utility for parsing HTTP messages. It parses both requests and responses. The parser is designed to be used in performance HTTP applications. It does not make any system calls or allocations, it does not buffer data, and it can be interrupted at any time. Depending on your architecture, it only requires about 40 bytes of data per message stream. Issues addressed include a denial of service vulnerability.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-06-11 CVE Reserved
  • 2018-11-28 CVE Published
  • 2024-12-27 CVE Updated
  • 2025-04-03 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Nodejs
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Node.js
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>= 6.0.0 < 6.15.0
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lts
Affected
Nodejs
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Node.js
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>= 8.0.0 < 8.14.0
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lts
Affected
Nodejs
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Node.js
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>= 10.0.0 < 10.14.0
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lts
Affected
Nodejs
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Node.js
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>= 11.0.0 < 11.3.0
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-
Affected
Redhat
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Enterprise Linux
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8.0
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-
Affected
Redhat
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Enterprise Linux Desktop
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7.0
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-
Affected
Redhat
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Enterprise Linux Eus
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8.1
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-
Affected
Redhat
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Enterprise Linux Eus
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8.2
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-
Affected
Redhat
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Enterprise Linux Eus
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8.4
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-
Affected
Redhat
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Enterprise Linux Eus
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8.6
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-
Affected
Redhat
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Enterprise Linux Server
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7.0
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-
Affected
Redhat
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Enterprise Linux Server Aus
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8.2
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-
Affected
Redhat
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Enterprise Linux Server Aus
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8.4
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-
Affected
Redhat
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Enterprise Linux Server Aus
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8.6
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-
Affected
Redhat
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Enterprise Linux Server Tus
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8.2
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-
Affected
Redhat
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Enterprise Linux Server Tus
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8.4
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-
Affected
Redhat
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Enterprise Linux Server Tus
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8.6
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-
Affected
Redhat
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Enterprise Linux Workstation
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7.0
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-
Affected