CVE-2016-8629: Keycloak core Keycloak-core Vulnerability

MODERATE
Advisory Identifier: GHSA-778x-2mqv-w6xw
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CWE-284
Published
Advisory Summary

CVE-2016-8629 is a MODERATE keycloak-core vulnerability (CWE-284: Improper Access Control) affecting Keycloak core libraries in the Maven ecosystem. The issue involves keycloak-core. Remediation is available by upgrading affected packages to version 2.4.0.

CVE-2016-8629 at a Glance

CVE Identifier CVE-2016-8629
GHSA Identifier GHSA-778x-2mqv-w6xw
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-284: Improper Access Control
Affected Product Keycloak core
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2016-8629

To remediate this vulnerability, upgrade all affected Keycloak core 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: 2.4.0 
<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-core</artifactId>
    <version>2.4.0</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-2016-8629, 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 core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.4.0), 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-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Keycloak core, 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

Red Hat Keycloak before version 2.4.0 did not correctly check permissions when handling service account user deletion requests sent to the rest server. An attacker with service account authentication could use this flaw to bypass normal permissions and delete users in a separate realm.

CVE-2016-8629 Affected Keycloak core Versions

1 component(s)
Fixed Versions:
2.4.0
Product / Package Ecosystem Affected Versions Fixed Version
org.keycloak:keycloak-core
maven/org.keycloak/keycloak-core
Maven
< 2.4.0
2.4.0

References

NVD — CVE-2016-8629 NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-8629
access.redhat.com/errata/rhsa-2017:08... WEB
https://access.redhat.com/errata/RHSA-2017:0872
access.redhat.com/errata/rhsa-2017:08... WEB
https://access.redhat.com/errata/RHSA-2017:0873
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=1388988
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-778x-2mqv-w6xw
rhn.redhat.com/errata/rhsa-2017-08... WEB
http://rhn.redhat.com/errata/RHSA-2017-0876.html
Keycloak core Security Information SECURITY
http://www.securityfocus.com/bid/97392
Keycloak core Security Information SECURITY
http://www.securitytracker.com/id/1038180

Frequently Asked Questions

What is CVE-2016-8629?
CVE-2016-8629 is a security vulnerability in Keycloak core involving keycloak-core under CWE-284: Improper Access Control.
Which Keycloak core versions are affected?
Affected versions include releases prior to 2.4.0 across affected packages: org.keycloak:keycloak-core.
What version fixes CVE-2016-8629?
Upgrading to 2.4.0 (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 2.4.0. Upgrade your dependency to 2.4.0 or later.
What CWE is associated with CVE-2016-8629?
CVE-2016-8629 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-2016-8629?
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-778x-2mqv-w6xw",
  "modified" : "2020-06-16T21:21:49Z",
  "published" : "2018-10-18T16:48:01Z",
  "aliases" : [ "CVE-2016-8629" ],
  "summary" : "Moderate severity vulnerability that affects org.keycloak:keycloak-core",
  "details" : "Red Hat Keycloak before version 2.4.0 did not correctly check permissions when handling service account user deletion requests sent to the rest server. An attacker with service account authentication could use this flaw to bypass normal permissions and delete users in a separate realm.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.keycloak:keycloak-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2016-8629"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2017:0872"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2017:0873"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1388988"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-778x-2mqv-w6xw"
  }, {
    "type" : "WEB",
    "url" : "http://rhn.redhat.com/errata/RHSA-2017-0876.html"
  }, {
    "type" : "WEB",
    "url" : "http://www.securityfocus.com/bid/97392"
  }, {
    "type" : "WEB",
    "url" : "http://www.securitytracker.com/id/1038180"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:21:49Z",
    "nvd_published_at" : null
  }
}