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Code injection in keycloak

High severity GitHub Reviewed Published May 13, 2021 to the GitHub Advisory Database • Updated Jan 29, 2023

Package

maven org.keycloak:keycloak-parent (Maven)

Affected versions

>= 9.0.0, < 12.0.3

Patched versions

12.0.3

Description

A flaw was found in keycloak. The new account console in keycloak can allow malicious code to be executed using the referrer URL. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

References

Published by the National Vulnerability Database Mar 23, 2021
Reviewed Mar 24, 2021
Published to the GitHub Advisory Database May 13, 2021
Last updated Jan 29, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS score

0.167%
(54th percentile)

Weaknesses

CVE ID

CVE-2021-20222

GHSA ID

GHSA-2mq8-99q7-55wx

Source code

No known source code
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