CVE-2017-1000088 Persisted XSS Vulnerability in Jenkins Sidebar Link Plugin

Medium 5.4 Published Updated

Attackers can inject JavaScript into sidebar links, potentially executing arbitrary code in the context of other users.

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-2017-1000088?

CVE-2017-1000088 is a medium-severity cross-site scripting vulnerability in n/a, published on 4 Oct 2017. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

The Sidebar Link plugin allows users able to configure jobs, views, and agents to add entries to the sidebar of these objects. There was no input validation, which meant users were able to use javascript: schemes for these links.

Weakness: CWE-79

Which versions are affected by CVE-2017-1000088?

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

PackageAffectedFixed in
org.jenkins-ci.plugins:sidebar-link MavenAll versions1.9
org.jenkins-ci.plugins:sidebar-link MavenAll versions1.9

Products include Jenkins Sidebar Link.

How do I fix CVE-2017-1000088?

Upgrade org.jenkins-ci.plugins:sidebar-link to 1.9 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-2017-1000088 being exploited?

There is no known exploitation of CVE-2017-1000088 in the wild and no public exploit code.

Sources

Also known as GHSA-477r-v22q-r42f.

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