// For flags

CVE-2021-4235

Denial of service in gopkg.in/yaml.v2

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Due to unbounded alias chasing, a maliciously crafted YAML file can cause the system to consume significant system resources. If parsing user input, this may be used as a denial of service vector.

Debido a la búsqueda ilimitada de alias, un archivo YAML creado con fines malintencionados puede hacer que el sistema consuma importantes recursos. Si se analiza la entrada del usuario, esto se puede utilizar como un vector de denegación de servicio.

A flaw was found in go-yaml. This issue occurs due to unbounded alias chasing, where a maliciously crafted YAML file can cause the system to consume significant system resources. If parsing user input, this may be used as a denial of service vector.

*Credits: @simonferquel
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-07-29 CVE Reserved
  • 2022-12-27 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • 2024-08-17 EPSS Updated
  • ---------- 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
Yaml Project
Search vendor "Yaml Project"
 Yaml
Search vendor "Yaml Project" for product "Yaml"
 < 2.2.3
Search vendor "Yaml Project" for product "Yaml" and version " < 2.2.3"
go
Affected