GHSA-mwm4-5qwr-g9pf: Keycloak services Keycloak Is Vulnerable To IDN Vulnerability

LOW
Share
CWE-284
Published
Advisory Summary

GHSA-mwm4-5qwr-g9pf is a LOW keycloak is vulnerable to idn vulnerability (CWE-284: Improper Access Control) affecting Keycloak services libraries in the Maven ecosystem. The issue involves keycloak is vulnerable to idn homograph attack. Remediation is available by upgrading affected packages to version 18.0.0.

GHSA-mwm4-5qwr-g9pf at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-mwm4-5qwr-g9pf
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-284: Improper Access Control
Affected Product Keycloak services
Package Ecosystem Maven
Published Date
Last Updated

How to Fix GHSA-mwm4-5qwr-g9pf

To remediate this vulnerability, upgrade all affected Keycloak services dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.keycloak:keycloak-services fixed: 18.0.0 
<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-services</artifactId>
    <version>18.0.0</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.keycloak

How to Check if You Are Affected

To determine whether your Java application is affected by GHSA-mwm4-5qwr-g9pf, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.keycloak

Analyze the terminal output to locate any version of Keycloak services in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 18.0.0), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.keycloak command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Keycloak services, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A flaw was found in keycloak, where IDN homograph attacks are possible. This flaw allows a malicious user to register a name that already exists and then tricking an admin to grant extra privileges. The highest threat from this vulnerability is to integrity.

GHSA-mwm4-5qwr-g9pf Affected Keycloak services Versions

1 component(s)
Fixed Versions:
18.0.0
Product / Package Ecosystem Affected Versions Fixed Version
org.keycloak:keycloak-services
maven/org.keycloak/keycloak-services
Maven
< 18.0.0
18.0.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/keycloak/keycloak/security/advisories/GHSA-mwm4-5qwr-g9pf
Security Fix Commit FIX COMMIT
https://github.com/keycloak/keycloak/commit/ac79fd0c23c6947a04073afc61e30d341498438e
Keycloak services Source Repository REPOSITORY
https://github.com/keycloak/keycloak

Frequently Asked Questions

What is GHSA-mwm4-5qwr-g9pf?
GHSA-mwm4-5qwr-g9pf is a security vulnerability in Keycloak services involving Keycloak is vulnerable to IDN homograph attack under CWE-284: Improper Access Control.
Which Keycloak services versions are affected?
Affected versions include releases prior to 18.0.0 across affected packages: org.keycloak:keycloak-services.
What version fixes GHSA-mwm4-5qwr-g9pf?
Upgrading to 18.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is keycloak-services affected?
Yes, org.keycloak:keycloak-services is affected in releases prior to 18.0.0. Upgrade your dependency to 18.0.0 or later.
What CWE is associated with GHSA-mwm4-5qwr-g9pf?
GHSA-mwm4-5qwr-g9pf is classified under CWE-284: Improper Access Control (The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.).
How can I check Maven dependencies for GHSA-mwm4-5qwr-g9pf?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.keycloak'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-mwm4-5qwr-g9pf",
  "modified" : "2022-04-28T21:00:31Z",
  "published" : "2022-04-28T21:00:31Z",
  "aliases" : [ ],
  "summary" : "Keycloak is vulnerable to IDN homograph attack",
  "details" : "A flaw was found in keycloak, where IDN homograph attacks are possible. This flaw allows a malicious user to register a name that already exists and then tricking an admin to grant extra privileges. The highest threat from this vulnerability is to integrity.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.keycloak:keycloak-services"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "18.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/security/advisories/GHSA-mwm4-5qwr-g9pf"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/commit/ac79fd0c23c6947a04073afc61e30d341498438e"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/keycloak/keycloak"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-04-28T21:00:31Z",
    "nvd_published_at" : null
  }
}