CVE-2020-2255 Missing permission check in Blue Ocean Plugin
Attackers with read permissions can connect to arbitrary URLs due to missing permission checks in the Jenkins Blue Ocean 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-2020-2255?
CVE-2020-2255 is a medium-severity missing authorization vulnerability in Jenkins Blue Ocean Plugin, published on 16 Sep 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A missing permission check in Jenkins Blue Ocean Plugin 1.23.2 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL.
Weakness: CWE-862
Which versions are affected by CVE-2020-2255?
2 open source packages ship an affected version, including io.jenkins.blueocean:blueocean. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
io.jenkins.blueocean:blueocean Maven | All versions | 1.23.3 |
io.jenkins.blueocean:blueocean Maven | All versions | 1.23.3 |
Products include Jenkins Blue Ocean.
How do I fix CVE-2020-2255?
Upgrade io.jenkins.blueocean:blueocean to 1.23.3 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2020-2255 being exploited?
There is no known exploitation of CVE-2020-2255 in the wild and no public exploit code.
Other vulnerabilities in Jenkins Blue Ocean Plugin
- CVE-2023-40341 Jenkins Blue Ocean Plugin cross-site request forgery vulnerability
- CVE-2017-1000106 Improper Authentication in Jenkins Blue Ocean Plugin
- CVE-2022-30952 Insufficiently Protected Credentials in Jenkins Pipeline SCM API for Blue Ocean Plugin
- CVE-2022-30953 Cross Site Request Forgery in Jenkins Blue Ocean Plugin
- CVE-2022-30954 Missing permission check in Jenkins Blue Ocean Plugin
Sources
Also known as GHSA-vc7g-4269-f7hw.