CVE-2023-24456 Session fixation vulnerability in Jenkins Keycloak Authentication Plugin

Critical 9.8 Published Updated

Attackers can hijack user sessions in Jenkins Keycloak Authentication Plugin by exploiting session fixation vulnerabilities.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2023-24456?

CVE-2023-24456 is a critical authentication bypass vulnerability in Jenkins Keycloak Authentication Plugin, published on 24 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Jenkins Keycloak Authentication Plugin 2.3.0 and earlier does not invalidate the previous session on login.

Weakness: CWE-384

Which versions are affected by CVE-2023-24456?

2 open source packages ship an affected version, including org.jenkins-ci.plugins:keycloak. It affects 1 product.

PackageAffectedFixed in
org.jenkins-ci.plugins:keycloak MavenAll versions2.3.1
org.jenkins-ci.plugins:keycloak MavenAll versions2.3.1

Products include Jenkins Keycloak Authentication.

How do I fix CVE-2023-24456?

Upgrade org.jenkins-ci.plugins:keycloak to 2.3.1 or later.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2023-24456 being exploited?

There is no known exploitation of CVE-2023-24456 in the wild and no public exploit code.

Sources

Also known as GHSA-9963-gmh8-vvm6.

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