CVE-2023-32997 Jenkins CAS Plugin Session Fixation vulnerability

High 8.8 Published Updated

Attackers can hijack user sessions in Jenkins CAS Plugin because previous sessions are not invalidated upon login.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2023-32997?

CVE-2023-32997 is a high-severity authentication bypass vulnerability in Jenkins CAS Plugin, published on 16 May 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Jenkins CAS Plugin 1.6.2 and earlier does not invalidate the previous session on login.

Weakness: CWE-384

Which versions are affected by CVE-2023-32997?

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

PackageAffectedFixed in
org.jenkins-ci.plugins:cas-plugin MavenAll versions1.6.3
org.jenkins-ci.plugins:cas-plugin MavenAll versions1.6.3

Products include Jenkins Cas.

How do I fix CVE-2023-32997?

Upgrade org.jenkins-ci.plugins:cas-plugin to 1.6.3 or later.

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

Is CVE-2023-32997 being exploited?

There is no known exploitation of CVE-2023-32997 in the wild and no public exploit code.

Sources

Also known as GHSA-hjh8-9gxh-cx4x.

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