CVE-2019-10383 Improper Neutralization of Input During Web Page Generation in Jenkins

Medium 4.8 Published Updated

Administrators can inject malicious scripts into Jenkins update center pages via the update site URL configuration, potentially compromising user sessions.

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

What is CVE-2019-10383?

CVE-2019-10383 is a medium-severity cross-site scripting vulnerability in Jenkins Jenkins, published on 28 Aug 2019. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

A stored cross-site scripting vulnerability in Jenkins 2.191 and earlier, LTS 2.176.2 and earlier allowed attackers with Overall/Administer permission to configure the update site URL to inject arbitrary HTML and JavaScript in update center web pages.

Weakness: CWE-79

Which versions are affected by CVE-2019-10383?

4 open source packages ship an affected version, including org.jenkins-ci.main:jenkins-core. It affects 3 products.

PackageAffectedFixed in
org.jenkins-ci.main:jenkins-core MavenAll versions2.176.3
org.jenkins-ci.main:jenkins-core MavenAll versions2.176.3
org.jenkins-ci.main:jenkins-core MavenFrom 2.1772.192
org.jenkins-ci.main:jenkins-core MavenFrom 2.1772.192

Products include Jenkins Jenkins, Oracle Communications Cloud Native Core Automated Test Suite, Redhat Openshift Container Platform.

How do I fix CVE-2019-10383?

Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.176.3 or 2.192.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2019-10383 being exploited?

There is no known exploitation of CVE-2019-10383 in the wild and no public exploit code.

All Jenkins Jenkins vulnerabilities

Sources

Also known as GHSA-9m48-54pj-h248.

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