// For flags

CVE-2021-20182

openshift: builder allows read and write of block devices

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A privilege escalation flaw was found in openshift4/ose-docker-builder. The build container runs with high privileges using a chrooted environment instead of runc. If an attacker can gain access to this build container, they can potentially utilize the raw devices of the underlying node, such as the network and storage devices, to at least escalate their privileges to that of the cluster admin. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Se encontró un fallo de escalada de privilegios en openshift4/ose-docker-builder. El contenedor de compilación se ejecuta con altos privilegios usando un entorno chrooted en lugar de runc. Si un atacante puede obtener acceso a este contenedor de compilación, potencialmente puede utilizar los dispositivos sin procesar del nodo subyacente, como la red y los dispositivos de almacenamiento, para al menos escalar sus privilegios a los del administrador del clúster. La mayor amenaza de esta vulnerabilidad es la confidencialidad e integridad de los datos, así como la disponibilidad del sistema

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-12-17 CVE Reserved
  • 2021-02-03 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-552: Files or Directories Accessible to External Parties
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 Container Platform
Search vendor "Redhat" for product "Openshift Container Platform"
 >= 4.4 < 4.4.33
Search vendor "Redhat" for product "Openshift Container Platform" and version " >= 4.4 < 4.4.33"
-
Affected
Redhat
Search vendor "Redhat"
 Openshift Container Platform
Search vendor "Redhat" for product "Openshift Container Platform"
 >= 4.5 < 4.5.30
Search vendor "Redhat" for product "Openshift Container Platform" and version " >= 4.5 < 4.5.30"
-
Affected
Redhat
Search vendor "Redhat"
 Openshift Container Platform
Search vendor "Redhat" for product "Openshift Container Platform"
 >= 4.6 < 4.6.15
Search vendor "Redhat" for product "Openshift Container Platform" and version " >= 4.6 < 4.6.15"
-
Affected