CVE-2017-17383 Cross-site Scripting in Jenkins Core

Medium 4.7 Published Updated

Remote authenticated administrators can execute arbitrary scripts via crafted tool names in Jenkins job configurations, potentially compromising user sessions.

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-2017-17383?

CVE-2017-17383 is a medium-severity cross-site scripting vulnerability in Jenkins Jenkins, published on 6 Dec 2017. 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 through 2.93 allows remote authenticated administrators to conduct XSS attacks via a crafted tool name in a job configuration form, as demonstrated by the JDK tool in Jenkins core and the Ant tool in the Ant plugin, aka SECURITY-624.

Weakness: CWE-79

Which versions are affected by CVE-2017-17383?

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

PackageAffectedFixed in
org.jenkins-ci.main:jenkins-core MavenAll versions2.94
org.jenkins-ci.main:jenkins-core MavenAll versions2.94

Products include Jenkins Jenkins.

How do I fix CVE-2017-17383?

Upgrade org.jenkins-ci.main:jenkins-core to 2.94 or later.

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-2017-17383 being exploited?

There is no known exploitation of CVE-2017-17383 in the wild and no public exploit code.

All Jenkins Jenkins vulnerabilities

Sources

Also known as CVE-2018-1000016, GHSA-x3rc-cxv7-6xp6.

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