// For flags

CVE-2021-3636

openshift: Injected service-ca.crt incorrectly contains additional internal CAs

Severity Score

4.6
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

It was found in OpenShift, before version 4.8, that the generated certificate for the in-cluster Service CA, incorrectly included additional certificates. The Service CA is automatically mounted into all pods, allowing them to safely connect to trusted in-cluster services that present certificates signed by the trusted Service CA. The incorrect inclusion of additional CAs in this certificate would allow an attacker that compromises any of the additional CAs to masquerade as a trusted in-cluster service.

Se encontró en OpenShift, anterior a versión 4.8, que el certificado generado para la CA de servicio en el clúster, incluía incorrectamente certificados adicionales. La CA de servicio se monta automáticamente en todos los pods, permitiéndoles conectarse de forma segura a los servicios confiables del clúster que presentan certificados firmados por la CA de servicio confiable. Una inclusión incorrecta de CAs adicionales en este certificado podría permitir a un atacante que comprometiera cualquiera de las CAs adicionales hacerse pasar por un servicio confiable dentro del clúster

*Credits: N/A
CVSS Scores
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Adjacent
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-07-02 CVE Reserved
  • 2021-07-28 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-287: Improper Authentication
  • CWE-295: Improper Certificate Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Redhat
Search vendor "Redhat"
Openshift
Search vendor "Redhat" for product "Openshift"
< 4.8
Search vendor "Redhat" for product "Openshift" and version " < 4.8"
-
Affected