CVE-2020-2104 Memory usage graphs accessible to anyone with Overall/Read

Medium 4.3 Published Updated

Users with Overall/Read access can view JVM memory usage charts, exposing internal system metrics.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2020-2104?

CVE-2020-2104 is a medium-severity vulnerability in Jenkins Jenkins, published on 29 Jan 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier allowed users with Overall/Read access to view a JVM memory usage chart.

Weakness: CWE-863

Which versions are affected by CVE-2020-2104?

5 open source packages ship an affected version, including org.jenkins-ci.main:jenkins-core and jenkins. It affects 1 product.

PackageAffectedFixed in
org.jenkins-ci.main:jenkins-core MavenAll versions2.204.2
org.jenkins-ci.main:jenkins-core MavenAll versions2.204.2
org.jenkins-ci.main:jenkins-core MavenFrom 2.2052.219
org.jenkins-ci.main:jenkins-core MavenFrom 2.2052.219
jenkins BitnamiAll versions2.218.1

Products include Jenkins Jenkins.

How do I fix CVE-2020-2104?

Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.204.2 or 2.219.

Is CVE-2020-2104 being exploited?

There is no known exploitation of CVE-2020-2104 in the wild and no public exploit code.

All Jenkins Jenkins vulnerabilities

Sources

Also known as BIT-jenkins-2020-2104, GHSA-r78q-qgx6-64pp.

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