CVE-2017-1000091 Explained : Impact and Mitigation
Learn about CVE-2017-1000091 affecting the GitHub Branch Source Plugin in Jenkins. Find out how users with Overall/Read access could potentially expose credentials and how to mitigate this security risk.
The GitHub Branch Source Plugin in Jenkins had a security flaw that allowed users with Overall/Read access to Jenkins to connect to any web server and send credentials, potentially exposing them to security risks.
Understanding CVE-2017-1000091
This CVE highlights a vulnerability in the GitHub Branch Source Plugin in Jenkins that could lead to unauthorized access and credential exposure.
What is CVE-2017-1000091?
The GitHub Branch Source Plugin in Jenkins incorrectly checked permissions, enabling users with Overall/Read access to Jenkins to connect to any web server and send credentials using a known ID, potentially leading to credential exposure.
The Impact of CVE-2017-1000091
The security flaw in the GitHub Branch Source Plugin allowed unauthorized users to access web servers and send credentials, posing a risk of credential exposure and potential security breaches.
Technical Details of CVE-2017-1000091
The following technical details outline the specifics of the vulnerability.
Vulnerability Description
The GitHub Branch Source Plugin in Jenkins did not properly enforce permissions, allowing users with Overall/Read access to Jenkins to connect to any web server and send credentials, potentially compromising security.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: Not applicable
Exploitation Mechanism
The vulnerability could be exploited by users with Overall/Read access to Jenkins, enabling them to connect to web servers and send credentials using a known ID, potentially exposing sensitive information.
Mitigation and Prevention
To address and prevent the security risks associated with CVE-2017-1000091, consider the following steps:
Immediate Steps to Take
- Update the GitHub Branch Source Plugin to the latest version.
- Restrict access permissions to Jenkins to authorized users only.
- Monitor and review user activities and connections to detect any unauthorized access.
Long-Term Security Practices
- Regularly review and update Jenkins plugins to ensure they are free from vulnerabilities.
- Implement multi-factor authentication for enhanced security.
Patching and Updates
- Apply patches and updates provided by Jenkins to address the security flaw in the GitHub Branch Source Plugin.