CVE-2018-16470

rubygem-rack: Buffer size in multipart parser allows for denial of service

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

There is a possible DoS vulnerability in the multipart parser in Rack before 2.0.6. Specially crafted requests can cause the multipart parser to enter a pathological state, causing the parser to use CPU resources disproportionate to the request size.

Hay una posible vulnerabilidad de denegación de servicio (DoS) en el analizador multiparte en Rack en versiones anteriores a la 2.0.6. Las peticiones especialmente manipuladas pueden provocar que el analizador multiparte entre en estado patológico, haciendo que emplee una cantidad de recursos de CPU desproporcionada al tamaño de la petición.

Red Hat Satellite is a systems management tool for Linux-based infrastructure. It allows for provisioning, remote management, and monitoring of multiple Linux deployments with a single centralized tool. Issues addressed include bypass, denial of service, and information leakage vulnerabilities.

*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

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

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

2018-09-04 CVE Reserved
2018-11-13 CVE Published
2024-08-05 CVE Updated
2025-04-08 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (4)

URL	Tag	Source
https://groups.google.com/forum/#%21msg/rubyonrails-security/U_x-YkfuVTg/xhvYAmp6AAAJ	X_refsource_misc

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2019:3172	2023-11-07
https://access.redhat.com/security/cve/CVE-2018-16470	2019-10-22
https://bugzilla.redhat.com/show_bug.cgi?id=1646814	2019-10-22

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Rack Project Search vendor "Rack Project"		Rack Search vendor "Rack Project" for product "Rack"				2.0.4 Search vendor "Rack Project" for product "Rack" and version "2.0.4"		-		Affected
Rack Project Search vendor "Rack Project"		Rack Search vendor "Rack Project" for product "Rack"				2.0.5 Search vendor "Rack Project" for product "Rack" and version "2.0.5"		-		Affected