CVE-2017-12158: Keycloak parent Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-v38p-mqq3-m6v5
Share
CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2017-12158 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Keycloak parent libraries in the Maven ecosystem. The issue involves keycloak reflected xss. Remediation is available by upgrading affected packages to version 3.4.0.

CVE-2017-12158 at a Glance

CVE Identifier CVE-2017-12158
GHSA Identifier GHSA-v38p-mqq3-m6v5
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Keycloak parent
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).

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

How to Fix CVE-2017-12158

To remediate this vulnerability, upgrade all affected Keycloak parent 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-parent fixed: 3.4.0 
<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-parent</artifactId>
    <version>3.4.0</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 CVE-2017-12158, 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 parent in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.4.0), 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Keycloak parent, 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

It was found that Keycloak would accept a HOST header URL in the admin console and use it to determine web resource locations. An attacker could use this flaw against an authenticated user to attain reflected XSS via a malicious server.

CVE-2017-12158 Affected Keycloak parent Versions

1 component(s)
Fixed Versions:
3.4.0
Product / Package Ecosystem Affected Versions Fixed Version
org.keycloak:keycloak-parent
maven/org.keycloak/keycloak-parent
Maven
< 3.4.0
3.4.0

References

NVD — CVE-2017-12158 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-12158
access.redhat.com/errata/rhsa-2017:29... WEB
https://access.redhat.com/errata/RHSA-2017:2904
access.redhat.com/errata/rhsa-2017:29... WEB
https://access.redhat.com/errata/RHSA-2017:2905
access.redhat.com/errata/rhsa-2017:29... WEB
https://access.redhat.com/errata/RHSA-2017:2906
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=1489161
Keycloak parent Security Information SECURITY
https://web.archive.org/web/20210124114020/http://www.securityfocus.com/bid/101618

Frequently Asked Questions

What is CVE-2017-12158?
CVE-2017-12158 is a security vulnerability in Keycloak parent involving Keycloak Reflected XSS under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Keycloak parent versions are affected?
Affected versions include releases prior to 3.4.0 across affected packages: org.keycloak:keycloak-parent.
What version fixes CVE-2017-12158?
Upgrading to 3.4.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is keycloak-parent affected?
Yes, org.keycloak:keycloak-parent is affected in releases prior to 3.4.0. Upgrade your dependency to 3.4.0 or later.
What is the CVSS score of CVE-2017-12158?
CVE-2017-12158 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2017-12158?
CVE-2017-12158 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Maven dependencies for CVE-2017-12158?
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-v38p-mqq3-m6v5",
  "modified" : "2023-07-26T19:14:49Z",
  "published" : "2022-05-13T01:38:14Z",
  "aliases" : [ "CVE-2017-12158" ],
  "summary" : "Keycloak Reflected XSS",
  "details" : "It was found that Keycloak would accept a HOST header URL in the admin console and use it to determine web resource locations. An attacker could use this flaw against an authenticated user to attain reflected XSS via a malicious server.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.keycloak:keycloak-parent"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-12158"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2017:2904"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2017:2905"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2017:2906"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1489161"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20210124114020/http://www.securityfocus.com/bid/101618"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-26T19:14:49Z",
    "nvd_published_at" : "2017-10-26T17:29:00Z"
  }
}