CVE-2023-6484: Keycloak services Keycloak Vulnerable To Log Injection Vulnerability

MODERATE
Advisory Identifier: GHSA-j628-q885-8gr5
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CVSS 5.3
CWE-117
Published
Advisory Summary

CVE-2023-6484 is a MODERATE (CVSS 5.3) keycloak vulnerable to log injection vulnerability (CWE-117: Improper Output Neutralization for Logs) affecting Keycloak services libraries in the Maven ecosystem. The issue involves keycloak vulnerable to log injection during webauthn authentication or registration. Remediation is available by upgrading affected packages to version 22.0.9, 23.0.5.

CVE-2023-6484 at a Glance

CVE Identifier CVE-2023-6484
GHSA Identifier GHSA-j628-q885-8gr5
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-117: Improper Output Neutralization for Logs
Affected Product Keycloak services
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:N).

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 None (A:N)

How to Fix CVE-2023-6484

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: 22.0.9 
<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-services</artifactId>
    <version>22.0.9</version>
</dependency>
org.keycloak:keycloak-services fixed: 23.0.5 
<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-services</artifactId>
    <version>23.0.5</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-2023-6484, 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 22.0.9), 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-117: Improper Output Neutralization for Logs, where the product constructs a log message from external input, but it does not neutralize or incorrectly neutralizes special elements when the message is written to a log file. 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 22.0.5. Errors in browser client during setup/auth with "Security Key login" (WebAuthn) are written into the form, send to Keycloak and logged without escaping allowing log injection. Acknowledgements: Special thanks toTheresa Henze for reporting this issue and helping us improve our security.

CVE-2023-6484 Affected Keycloak services Versions

2 component(s)
Fixed Versions:
22.0.923.0.5
Product / Package Ecosystem Affected Versions Fixed Version
org.keycloak:keycloak-services
maven/org.keycloak/keycloak-services
Maven
< 22.0.9
22.0.9
org.keycloak:keycloak-services
maven/org.keycloak/keycloak-services
Maven
≥ 23.0.0
< 23.0.5
23.0.5

References

GitHub Advisory / Wiki ADVISORY
https://github.com/keycloak/keycloak/security/advisories/GHSA-j628-q885-8gr5
NVD — CVE-2023-6484 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-6484
Keycloak services Source Repository REPOSITORY
https://github.com/keycloak/keycloak/issues/25078
Security Fix Commit FIX COMMIT
https://github.com/keycloak/keycloak/commit/f9049565a9a228faa08138b9269d66d3de6c7e9a
Security Fix Commit FIX COMMIT
https://github.com/keycloak/keycloak/commit/110f64a8146d0817252f90cf4b5e6a62aa897aff
Keycloak services Source Repository REPOSITORY
https://github.com/keycloak/keycloak
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-j628-q885-8gr5
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2248423
Keycloak services Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2023-6484
access.redhat.com/errata/rhsa-2024:18... WEB
https://access.redhat.com/errata/RHSA-2024:1868
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-2024:1866
access.redhat.com/errata/rhsa-2024:18... WEB
https://access.redhat.com/errata/RHSA-2024:1865
access.redhat.com/errata/rhsa-2024:18... WEB
https://access.redhat.com/errata/RHSA-2024:1864
access.redhat.com/errata/rhsa-2024:18... WEB
https://access.redhat.com/errata/RHSA-2024:1862
access.redhat.com/errata/rhsa-2024:18... WEB
https://access.redhat.com/errata/RHSA-2024:1861
access.redhat.com/errata/rhsa-2024:18... WEB
https://access.redhat.com/errata/RHSA-2024:1860
access.redhat.com/errata/rhsa-2024:08... WEB
https://access.redhat.com/errata/RHSA-2024:0804
access.redhat.com/errata/rhsa-2024:08... WEB
https://access.redhat.com/errata/RHSA-2024:0801
access.redhat.com/errata/rhsa-2024:08... WEB
https://access.redhat.com/errata/RHSA-2024:0800
access.redhat.com/errata/rhsa-2024:07... WEB
https://access.redhat.com/errata/RHSA-2024:0799
access.redhat.com/errata/rhsa-2024:07... WEB
https://access.redhat.com/errata/RHSA-2024:0798

Frequently Asked Questions

What is CVE-2023-6484?
CVE-2023-6484 is a security vulnerability in Keycloak services involving Keycloak vulnerable to log Injection during WebAuthn authentication or registration under CWE-117: Improper Output Neutralization for Logs.
Which Keycloak services versions are affected?
Affected versions include releases prior to 22.0.9, 23.0.5 across affected packages: org.keycloak:keycloak-services.
What version fixes CVE-2023-6484?
Upgrading to 22.0.9, 23.0.5 (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 22.0.9, 23.0.5. Upgrade your dependency to 22.0.9, 23.0.5 or later.
What is the CVSS score of CVE-2023-6484?
CVE-2023-6484 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2023-6484?
CVE-2023-6484 is classified under CWE-117: Improper Output Neutralization for Logs (The product constructs a log message from external input, but it does not neutralize or incorrectly neutralizes special elements when the message is written to a log file.).
How can I check Maven dependencies for CVE-2023-6484?
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 
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  "id" : "GHSA-j628-q885-8gr5",
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  "details" : "A flaw was found in keycloak 22.0.5. Errors in browser client during setup/auth with \"Security Key login\" (WebAuthn) are written into the form, send to Keycloak and logged without escaping allowing log injection.\n\nAcknowledgements:\nSpecial thanks toTheresa Henze for reporting this issue and helping us improve our security.",
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  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:1865"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:1864"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:1862"
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    "url" : "https://access.redhat.com/errata/RHSA-2024:1861"
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    "url" : "https://access.redhat.com/errata/RHSA-2024:1860"
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    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:0804"
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    "url" : "https://access.redhat.com/errata/RHSA-2024:0801"
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    "url" : "https://access.redhat.com/errata/RHSA-2024:0800"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:0799"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2024:0798"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-117" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-17T18:24:03Z",
    "nvd_published_at" : "2024-04-25T16:15:09Z"
  }
}