CVE-2020-2187
MEDIUM5.6EPSS 0.04%Lack of SSL/TLS certificate and hostname validation in Amazon EC2 Plugin
Published: 5/24/2022Modified: 2/16/2024
Description
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).
Affected packages (1)
- Maven/org.jenkins-ci.plugins:ec2from 0, < 1.50.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.6 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |
References (5)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2020-2187
- PATCHhttps://github.com/jenkinsci/ec2-plugin
- WEBhttps://github.com/jenkinsci/ec2-plugin/commit/4c9f03ae202e4730fd54eda40771fa4d3873e358
- WEBhttps://jenkins.io/security/advisory/2020-05-06/#SECURITY-1528
- WEBhttp://www.openwall.com/lists/oss-security/2020/05/06/3