CVE-2023-37943 Jenkins Active Directory Plugin vulnerable to Active Directory credential disclosure

What is CVE-2023-37943?

CVE-2023-37943 is a medium-severity vulnerability in Jenkins Active Directory Plugin, published on 12 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Jenkins Active Directory Plugin 2.30 and earlier ignores the "Require TLS" and "StartTls" options and always performs the connection test to Active directory unencrypted, allowing attackers able to capture network traffic between the Jenkins controller and Active Directory servers to obtain Active Directory credentials.

Weakness: CWE-311

Which versions are affected by CVE-2023-37943?

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

Products include Jenkins Active Directory.

How do I fix CVE-2023-37943?

Upgrade org.jenkins-ci.plugins:active-directory to 2.30.1 or later.

Is CVE-2023-37943 being exploited?

There is no known exploitation of CVE-2023-37943 in the wild and no public exploit code.

Other vulnerabilities in Jenkins Active Directory Plugin

• CVE-2020-2299 Improper Authentication in Jenkins Active Directory Plugin Critical 9.8
• CVE-2020-2300 Improper Authentication (empty password) in Jenkins Active Directory Plugin Critical 9.8
• CVE-2020-2301 Authentication cache in Active Directory Jenkins Plugin allows logging in with any password Critical 9.8
• CVE-2017-2649 Jenkins Active Directory Plugin did not verify certificate of AD server High 8.1
• CVE-2019-1003009 Jenkins Active Directory Plugin Improper certificate validation with StartTLS High 7.4

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-g8c3-6fj2-87w7.