// For flags

CVE-2021-22902

rails: Possible Denial of Service vulnerability in Action Dispatch

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The actionpack ruby gem (a framework for handling and responding to web requests in Rails) before 6.0.3.7, 6.1.3.2 suffers from a possible denial of service vulnerability in the Mime type parser of Action Dispatch. Carefully crafted Accept headers can cause the mime type parser in Action Dispatch to do catastrophic backtracking in the regular expression engine.

El actionpack ruby gem (un marco de trabajo para manejar y responder a peticiones web en Rails) versiones anteriores a 6.0.3.7, 6.1.3.2 sufre de una posible vulnerabilidad de denegación de servicio en el analizador de tipos Mime de Action Dispatch. Unas cabeceras Accept cuidadosamente diseñadas pueden hacer que el analizador de tipos mime de Action Dispatch realice un retroceso catastrófico en el motor de expresiones regulares

A flaw was found in RubyGem Actionpack which is framework for handling and responding to web requests in Rails. A possible Denial of Service vulnerability was found in the Mime type parser of Action Dispatch.

*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
  • 2021-01-06 CVE Reserved
  • 2021-06-11 CVE Published
  • 2024-02-25 EPSS Updated
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
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
Rubyonrails
Search vendor "Rubyonrails"
Rails
Search vendor "Rubyonrails" for product "Rails"
>= 6.0.0 < 6.0.3.7
Search vendor "Rubyonrails" for product "Rails" and version " >= 6.0.0 < 6.0.3.7"
-
Affected
Rubyonrails
Search vendor "Rubyonrails"
Rails
Search vendor "Rubyonrails" for product "Rails"
>= 6.1.0 < 6.1.0.2
Search vendor "Rubyonrails" for product "Rails" and version " >= 6.1.0 < 6.1.0.2"
-
Affected