CVE-2020-2249 : Exploit Details and Defense Strategies
Learn about CVE-2020-2249 affecting Jenkins Team Foundation Server Plugin. Unencrypted webhook secret storage exposes systems to unauthorized access. Find mitigation steps here.
Jenkins Team Foundation Server Plugin 5.157.1 and earlier versions store a webhook secret unencrypted, making it accessible to attackers with Jenkins controller file system access.
Understanding CVE-2020-2249
This CVE involves a vulnerability in the Jenkins Team Foundation Server Plugin that could lead to unauthorized access to sensitive information.
What is CVE-2020-2249?
This CVE refers to the insecure storage of a webhook secret in the global configuration file of the Jenkins controller, potentially exposing it to malicious actors.
The Impact of CVE-2020-2249
The vulnerability allows attackers with access to the Jenkins controller file system to view the unencrypted webhook secret, compromising the security and confidentiality of the information.
Technical Details of CVE-2020-2249
The technical aspects of the vulnerability are as follows:
Vulnerability Description
The Jenkins Team Foundation Server Plugin versions 5.157.1 and earlier do not encrypt the webhook secret stored in the global configuration file, posing a security risk.
Affected Systems and Versions
- Product: Jenkins Team Foundation Server Plugin
- Vendor: Jenkins project
- Vulnerable Versions: <= 5.157.1
Exploitation Mechanism
Attackers with access to the Jenkins controller file system can exploit this vulnerability to retrieve the unencrypted webhook secret.
Mitigation and Prevention
To address CVE-2020-2249, consider the following mitigation strategies:
Immediate Steps to Take
- Upgrade to a patched version of the Jenkins Team Foundation Server Plugin.
- Implement access controls to restrict unauthorized access to the Jenkins controller file system.
Long-Term Security Practices
- Regularly review and update security configurations for Jenkins and its plugins.
- Encrypt sensitive information stored in configuration files to prevent unauthorized access.
Patching and Updates
- Stay informed about security advisories from Jenkins project and promptly apply patches to address known vulnerabilities.