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GHSA-c89c-pvm7-33wj

Lack of SSL/TLS certificate and hostname validation in Amazon EC2 Plugin

Source: GitHub Advisory Database (reviewed) Moderate CVE-2020-2187

Packages

EcosystemPackageAffectedFixed in
Maven org.jenkins-ci.plugins:ec2 < 1.50.2 1.50.2

Details

As written in the advisory (Markdown source, shown as plain text).

Amazon EC2 Plugin connects to Windows agents via HTTPS. Amazon EC2 Plugin 1.50.1 and earlier unconditionally accepts self-signed HTTPS certificates and does not perform hostname validation when connecting to Windows agents. This lack of validation could be abused using a man-in-the-middle attack to intercept these connections to build agents. Amazon EC2 Plugin 1.50.2 by default no longer accepts self-signed HTTPS certificates and performs hostname validation. A new configuration option allows restoring the previous, unsafe behavior. For more information see [the plugin documentation](https://github.com/jenkinsci/ec2-plugin/#securing-the-connection-to-windows-amis).

References

External links from the advisory. They lead to third-party sites.