CVE-2023-0105: Keycloak Impersonation And Lockout Possible Through Vulnerability

MODERATE
Advisory Identifier: GHSA-c7xw-p58w-h6fj
Share
CVSS 6.5
CWE-841 CWE-287
Published
Advisory Summary

CVE-2023-0105 is a MODERATE (CVSS 6.5) impersonation and lockout possible through vulnerability (CWE-841: Improper Enforcement of Behavioral Workflow) affecting Keycloak libraries in the Maven ecosystem. The issue involves impersonation and lockout possible through incorrect handling of email trust. Remediation is available by upgrading affected packages to version 22.0.1.

CVE-2023-0105 at a Glance

CVE Identifier CVE-2023-0105
GHSA Identifier GHSA-c7xw-p58w-h6fj
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-841: Improper Enforcement of Behavioral Workflow
Affected Product Keycloak
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2023-0105

To remediate this vulnerability, upgrade all affected Keycloak 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-core fixed: 22.0.1 
<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-core</artifactId>
    <version>22.0.1</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 CVE-2023-0105, 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 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 22.0.1), 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-841: Improper Enforcement of Behavioral Workflow, where the product supports a session in which more than one behavior must be performed by an actor, but it does not properly ensure that the actor performs the behaviors in the required sequence. In Keycloak, 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

Impersonation and lockout are possible due to email trust not being handled correctly in Keycloak. Since the verified state is not reset when the email changes, it is possible for users to shadow others with the same email and lock out or impersonate them.

CVE-2023-0105 Affected Keycloak Versions

1 component(s)
Fixed Versions:
22.0.1
Product / Package Ecosystem Affected Versions Fixed Version
org.keycloak:keycloak-core
maven/org.keycloak/keycloak-core
Maven
< 22.0.1
22.0.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/keycloak/keycloak/security/advisories/GHSA-c7xw-p58w-h6fj
Security Fix Commit FIX COMMIT
https://github.com/keycloak/keycloak/commit/87a50d3ba790b049e436c9925874f9b418af7988
Keycloak Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2023-0105
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2158910
Keycloak Source Repository REPOSITORY
https://github.com/keycloak/keycloak

Frequently Asked Questions

What is CVE-2023-0105?
CVE-2023-0105 is a security vulnerability in Keycloak involving Impersonation and lockout possible through incorrect handling of email trust under CWE-841: Improper Enforcement of Behavioral Workflow.
Which Keycloak versions are affected?
Affected versions include releases prior to 22.0.1 across affected packages: org.keycloak:keycloak-core.
What version fixes CVE-2023-0105?
Upgrading to 22.0.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is keycloak-core affected?
Yes, org.keycloak:keycloak-core is affected in releases prior to 22.0.1. Upgrade your dependency to 22.0.1 or later.
What is the CVSS score of CVE-2023-0105?
CVE-2023-0105 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.
What CWE is associated with CVE-2023-0105?
CVE-2023-0105 is classified under CWE-841: Improper Enforcement of Behavioral Workflow (The product supports a session in which more than one behavior must be performed by an actor, but it does not properly ensure that the actor performs the behaviors in the required sequence.).
How can I check Maven dependencies for CVE-2023-0105?
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-c7xw-p58w-h6fj",
  "modified" : "2023-07-18T19:12:28Z",
  "published" : "2023-07-18T19:12:28Z",
  "aliases" : [ "CVE-2023-0105" ],
  "summary" : "Keycloak: Impersonation and lockout possible through incorrect handling of email trust",
  "details" : "Impersonation and lockout are possible due to email trust not being handled correctly in Keycloak. Since the verified state is not reset when the email changes, it is possible for users to shadow others with the same email and lock out or impersonate them.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.keycloak:keycloak-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "22.0.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/security/advisories/GHSA-c7xw-p58w-h6fj"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/commit/87a50d3ba790b049e436c9925874f9b418af7988"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2023-0105"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2158910"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/keycloak/keycloak"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-287", "CWE-841" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-18T19:12:28Z",
    "nvd_published_at" : null
  }
}