CVE-2023-0657: Keycloak services Keycloak Vulnerable To Impersonation Vulnerability

LOW
Advisory Identifier: GHSA-7fpj-9hr8-28vh
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CVSS 3.4
CWE-284 CWE-287 CWE-273 CWE-290 CWE-347
Published
Advisory Summary

CVE-2023-0657 is a LOW (CVSS 3.4) keycloak vulnerable to impersonation vulnerability (CWE-284: Improper Access Control) affecting Keycloak services libraries in the Maven ecosystem. The issue involves keycloak vulnerable to impersonation via logout token exchange. Remediation is available by upgrading affected packages to version 22.0.10, 24.0.3.

CVE-2023-0657 at a Glance

CVE Identifier CVE-2023-0657
GHSA Identifier GHSA-7fpj-9hr8-28vh
Severity LOW
CVSS v3.1 Base Score 3.4
CWE Classification CWE-284: Improper Access Control
Affected Product Keycloak services
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 3.4

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

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

How to Fix CVE-2023-0657

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: 22.0.10 
<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-services</artifactId>
    <version>22.0.10</version>
</dependency>
org.keycloak:keycloak-services fixed: 24.0.3 
<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-services</artifactId>
    <version>24.0.3</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-2023-0657, 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 22.0.10), 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

Keycloak was found to not properly enforce token types when validating signatures locally. An authenticated attacker could use this flaw to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.

CVE-2023-0657 Affected Keycloak services Versions

2 component(s)
Fixed Versions:
22.0.1024.0.3
Product / Package Ecosystem Affected Versions Fixed Version
org.keycloak:keycloak-services
maven/org.keycloak/keycloak-services
Maven
< 22.0.10
22.0.10
org.keycloak:keycloak-services
maven/org.keycloak/keycloak-services
Maven
≥ 23.0.0
< 24.0.3
24.0.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/keycloak/keycloak/security/advisories/GHSA-7fpj-9hr8-28vh
NVD — CVE-2023-0657 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-0657
access.redhat.com/errata/rhsa-2024:18... WEB
https://access.redhat.com/errata/RHSA-2024:1867
access.redhat.com/errata/rhsa-2024:18... WEB
https://access.redhat.com/errata/RHSA-2024:1868
Keycloak services Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2023-0657
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2166728
Keycloak services Source Repository REPOSITORY
https://github.com/keycloak/keycloak

Frequently Asked Questions

What is CVE-2023-0657?
CVE-2023-0657 is a security vulnerability in Keycloak services involving Keycloak vulnerable to impersonation via logout token exchange under CWE-284: Improper Access Control.
Which Keycloak services versions are affected?
Affected versions include releases prior to 22.0.10, 24.0.3 across affected packages: org.keycloak:keycloak-services.
What version fixes CVE-2023-0657?
Upgrading to 22.0.10, 24.0.3 (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 22.0.10, 24.0.3. Upgrade your dependency to 22.0.10, 24.0.3 or later.
What is the CVSS score of CVE-2023-0657?
CVE-2023-0657 has a CVSS v3.1 base score of 3.4 (LOW) with vector string CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2023-0657?
CVE-2023-0657 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 CVE-2023-0657?
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-7fpj-9hr8-28vh",
  "modified" : "2024-11-18T17:28:39Z",
  "published" : "2024-04-17T18:25:59Z",
  "aliases" : [ "CVE-2023-0657" ],
  "summary" : "Keycloak vulnerable to impersonation via logout token exchange",
  "details" : "Keycloak was found to not properly enforce token types when validating signatures locally. An authenticated attacker could use this flaw to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.\n\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.keycloak:keycloak-services"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "22.0.10"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.keycloak:keycloak-services"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "23.0.0"
      }, {
        "fixed" : "24.0.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/security/advisories/GHSA-7fpj-9hr8-28vh"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-0657"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:1867"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:1868"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2023-0657"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2166728"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/keycloak/keycloak"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-273", "CWE-284", "CWE-287", "CWE-290", "CWE-347" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-17T18:25:59Z",
    "nvd_published_at" : "2024-11-17T11:15:05Z"
  }
}