CVE-2019-1003043 Jenkins Slack Notification Plugin missing permission check

High 7.5 Published Updated

Attackers with read access can exploit missing permission checks to capture stored credentials by connecting to attacker-controlled URLs.

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-2019-1003043?

CVE-2019-1003043 is a high-severity missing authorization vulnerability in Jenkins Slack Notification Plugin, published on 28 Mar 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A missing permission check in Jenkins Slack Notification Plugin 2.19 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.

Weakness: CWE-862

Which versions are affected by CVE-2019-1003043?

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

PackageAffectedFixed in
org.jenkins-ci.plugins:slack MavenAll versions2.20
org.jenkins-ci.plugins:slack MavenAll versions2.20

Products include Jenkins Slack Notification.

How do I fix CVE-2019-1003043?

Upgrade org.jenkins-ci.plugins:slack to 2.20 or later.

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

Is CVE-2019-1003043 being exploited?

There is no known exploitation of CVE-2019-1003043 in the wild and no public exploit code.

Sources

Also known as GHSA-22xp-7rcx-xp34.

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