CVE-2020-2187 : Vulnerability Insights and Analysis
Learn about CVE-2020-2187 affecting Jenkins Amazon EC2 Plugin versions <= 1.50.1, enabling man-in-the-middle attacks due to self-signed certificate acceptance without hostname validation.
Jenkins Amazon EC2 Plugin 1.50.1 and earlier versions unconditionally accept self-signed certificates, lacking hostname validation, which can lead to man-in-the-middle attacks.
Understanding CVE-2020-2187
This CVE affects the Jenkins Amazon EC2 Plugin, allowing for potential security vulnerabilities.
What is CVE-2020-2187?
CVE-2020-2187 refers to a vulnerability in Jenkins Amazon EC2 Plugin versions 1.50.1 and earlier, enabling attackers to conduct man-in-the-middle attacks due to the plugin's acceptance of self-signed certificates without proper hostname validation.
The Impact of CVE-2020-2187
The vulnerability poses a significant security risk as it allows malicious actors to intercept communication between the Jenkins server and Amazon EC2 instances, potentially leading to data breaches or unauthorized access.
Technical Details of CVE-2020-2187
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
Jenkins Amazon EC2 Plugin versions 1.50.1 and earlier do not validate hostnames for self-signed certificates, creating a vulnerability that can be exploited for man-in-the-middle attacks.
Affected Systems and Versions
- Product: Jenkins Amazon EC2 Plugin
- Vendor: Jenkins project
- Versions Affected: <= 1.50.1
- Version Type: Custom
Exploitation Mechanism
The vulnerability allows attackers to intercept communication between Jenkins and Amazon EC2 instances by exploiting the lack of hostname validation for self-signed certificates.
Mitigation and Prevention
Protecting systems from CVE-2020-2187 requires immediate action and long-term security measures.
Immediate Steps to Take
- Update the Jenkins Amazon EC2 Plugin to a secure version that addresses the vulnerability.
- Implement network-level security measures to detect and prevent man-in-the-middle attacks.
Long-Term Security Practices
- Regularly monitor and update all Jenkins plugins to ensure they are free from known vulnerabilities.
- Enforce strict certificate validation practices to prevent unauthorized certificates from being accepted.
Patching and Updates
- Apply patches or updates provided by Jenkins project to fix the vulnerability in the Amazon EC2 Plugin.