CVE-2019-16539 : Exploit Details and Defense Strategies
Learn about CVE-2019-16539, a security flaw in Jenkins Support Core Plugin versions 2.63 and earlier allowing attackers with Overall/Read permission to delete support bundles. Find mitigation steps and prevention measures.
A vulnerability in Jenkins Support Core Plugin versions 2.63 and earlier allows attackers with Overall/Read permission to delete support bundles due to a missing permission check.
Understanding CVE-2019-16539
This CVE involves a security issue in the Jenkins Support Core Plugin that enables attackers to delete support bundles without proper authorization.
What is CVE-2019-16539?
The vulnerability in Jenkins Support Core Plugin versions 2.63 and earlier permits users with Overall/Read permission to delete support bundles, posing a security risk.
The Impact of CVE-2019-16539
Attackers with the specified permission level can exploit this flaw to delete support bundles, potentially causing data loss or disruption in Jenkins environments.
Technical Details of CVE-2019-16539
This section delves into the specifics of the vulnerability.
Vulnerability Description
The vulnerability arises from the absence of a permission check in Jenkins Support Core Plugin versions 2.63 and earlier, allowing unauthorized deletion of support bundles.
Affected Systems and Versions
- Product: Jenkins Support Core Plugin
- Vendor: Jenkins project
- Versions Affected: 2.63 and earlier
Exploitation Mechanism
Attackers with Overall/Read permission can exploit this vulnerability to delete support bundles, leveraging the lack of proper permission validation.
Mitigation and Prevention
Protecting systems from CVE-2019-16539 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Upgrade Jenkins Support Core Plugin to a non-vulnerable version immediately.
- Restrict Overall/Read permission to trusted users only.
Long-Term Security Practices
- Regularly review and adjust permission settings in Jenkins to minimize the risk of unauthorized actions.
- Stay informed about security advisories and updates related to Jenkins plugins.
Patching and Updates
Ensure timely installation of security patches and updates for Jenkins Support Core Plugin to address known vulnerabilities.