CVE-2017-1000110 Improper Authentication in Jenkins Blue Ocean Plugin

Medium 4.3 Published Updated

Attackers with read access can reconfigure GitHub organization folders to steal access tokens due to missing authorization checks.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2017-1000110?

CVE-2017-1000110 is a medium-severity missing authorization vulnerability in n/a, published on 4 Oct 2017. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Blue Ocean allows the creation of GitHub organization folders that are set up to scan a GitHub organization for repositories and branches containing a Jenkinsfile, and create corresponding pipelines in Jenkins. It did not properly check the current user's authentication and authorization when configuring existing GitHub organization folders. This allowed users with read access to the GitHub organization folder to reconfigure it, including changing the GitHub API endpoint for the organization folder to an attacker-controlled server to obtain the GitHub access token, if the organization folder was initially created using Blue Ocean.

Weakness: CWE-287

Which versions are affected by CVE-2017-1000110?

2 open source packages ship an affected version, including io.jenkins.blueocean:blueocean. It affects 1 product.

PackageAffectedFixed in
io.jenkins.blueocean:blueocean MavenAll versions1.2.0
io.jenkins.blueocean:blueocean MavenAll versions1.2.0

Products include Jenkins Blue Ocean.

How do I fix CVE-2017-1000110?

Upgrade io.jenkins.blueocean:blueocean to 1.2.0 or later.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2017-1000110 being exploited?

There is no known exploitation of CVE-2017-1000110 in the wild and no public exploit code.

Sources

Also known as GHSA-rm5m-9mx4-g5r7.

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