CVE-2021-20198

CVSS V2 Medium 6.8 CVSS V3 High 8.1
Description
A flaw was found in the OpenShift Installer before version v0.9.0-master.0.20210125200451-95101da940b0. During installation of OpenShift Container Platform 4 clusters, bootstrap nodes are provisioned with anonymous authentication enabled on kubelet port 10250. A remote attacker able to reach this port during installation can make unauthenticated `/exec` requests to execute arbitrary commands within running containers. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Overview
  • CVE ID
  • CVE-2021-20198
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-02-23T18:15:13
  • Last Modified Date
  • 2021-02-27T03:49:32
Weakness Enumerations
CWE URL
CWE-306 http://cwe.mitre.org/data/definitions/306.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:redhat:openshift_installer:*:*:*:*:*:*:*:* 1 OR 0.9.0-master.0.20210125200451-95101da940b0
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 6.8
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.1
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.2
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1920764 Issue Tracking Patch Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-20198
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20198
History
Created Old Value New Value Data Type Notes
2022-05-10 07:21:26 Added to TrackCVE
2022-12-05 22:38:42 2021-02-23T18:15Z 2021-02-23T18:15:13 CVE Published Date updated
2022-12-05 22:38:42 2021-02-27T03:49:32 CVE Modified Date updated
2022-12-05 22:38:42 Analyzed Vulnerability Status updated