CVE-2019-1003026 Jenkins Mattermost Notification Plugin vulnerable to SSRF
Attackers with read permissions can force Jenkins to connect to arbitrary Mattermost servers and send messages via the notification plugin.
- 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-2019-1003026?
CVE-2019-1003026 is a medium-severity server-side request forgery vulnerability in Jenkins Mattermost Notification Plugin, published on 20 Feb 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A server-side request forgery vulnerability exists in Jenkins Mattermost Notification Plugin 2.6.2 and earlier in MattermostNotifier.java that allows attackers with Overall/Read permission to have Jenkins connect to an attacker-specified Mattermost server and room and send a message.
Weakness: CWE-918
Which versions are affected by CVE-2019-1003026?
2 open source packages ship an affected version, including org.jenkins-ci.plugins:mattermost. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.plugins:mattermost Maven | All versions | 2.6.3 |
org.jenkins-ci.plugins:mattermost Maven | All versions | 2.6.3 |
Products include Jenkins Mattermost.
How do I fix CVE-2019-1003026?
Upgrade org.jenkins-ci.plugins:mattermost to 2.6.3 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2019-1003026 being exploited?
There is no known exploitation of CVE-2019-1003026 in the wild and no public exploit code.
Sources
Also known as GHSA-wxj2-qc9p-65r3.