CVE-2022-34171 Cross-site Scripting vulnerability in Jenkins

Medium 5.4 Published Updated

Cross-site scripting vulnerability in Jenkins allows attackers to inject malicious scripts via unescaped SVG icon attributes, potentially leading to session hijacking or code execution.

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

What is CVE-2022-34171?

CVE-2022-34171 is a medium-severity cross-site scripting vulnerability in Jenkins Jenkins, published on 22 Jun 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

In Jenkins 2.321 through 2.355 (both inclusive) and LTS 2.332.1 through LTS 2.332.3 (both inclusive) the HTML output generated for new symbol-based SVG icons includes the 'title' attribute of 'l:ionicon' (until Jenkins 2.334) and 'alt' attribute of 'l:icon' (since Jenkins 2.335) without further escaping, resulting in a cross-site scripting (XSS) vulnerability.

Weakness: CWE-79

Which versions are affected by CVE-2022-34171?

7 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 versions2.332.4
org.jenkins-ci.main:jenkins-core MavenAll versions2.332.4
org.jenkins-ci.main:jenkins-core MavenFrom 2.3462.346.1
org.jenkins-ci.main:jenkins-core MavenFrom 2.3462.346.1
org.jenkins-ci.main:jenkins-core MavenFrom 2.3502.356
org.jenkins-ci.main:jenkins-core MavenFrom 2.3502.356
1 more packages
jenkins BitnamiFrom 2.321.02.355.1

Products include Jenkins Jenkins.

How do I fix CVE-2022-34171?

Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.332.4, 2.346.1 or 2.356.

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-2022-34171 being exploited?

There is no known exploitation of CVE-2022-34171 in the wild and no public exploit code.

All Jenkins Jenkins vulnerabilities

Sources

Also known as BIT-jenkins-2022-34171, GHSA-7f84-p6r5-jr6q.

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