CVE-2018-1000177 Stored XSS vulnerability in Jenkins S3 Publisher Plugin

Medium 5.4 Published Updated

Attackers can execute arbitrary JavaScript in other users' browsers via malicious file names in the Jenkins S3 Plugin.

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-2018-1000177?

CVE-2018-1000177 is a medium-severity cross-site scripting vulnerability in n/a, published on 8 May 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A cross-site scripting vulnerability exists in Jenkins S3 Plugin 0.10.12 and older in src/main/resources/hudson/plugins/s3/S3ArtifactsProjectAction/jobMain.jelly that allows attackers able to control file names of uploaded files to define file names containing JavaScript that would be executed in another user's browser when that user performs some UI actions.

Weakness: CWE-79

Which versions are affected by CVE-2018-1000177?

2 open source packages ship an affected version, including org.jenkins-ci.plugins:s3. It affects 1 product.

PackageAffectedFixed in
org.jenkins-ci.plugins:s3 MavenAll versions0.11.0
org.jenkins-ci.plugins:s3 MavenAll versions0.11.0

Products include Jenkins S3 Publisher.

How do I fix CVE-2018-1000177?

Upgrade org.jenkins-ci.plugins:s3 to 0.11.0 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-2018-1000177 being exploited?

There is no known exploitation of CVE-2018-1000177 in the wild and no public exploit code.

Sources

Also known as GHSA-3892-qqv6-h2qm.

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