CVE-2019-16559 : Exploit Details and Defense Strategies
Learn about CVE-2019-16559, a vulnerability in Jenkins WebSphere Deployer Plugin allowing unauthorized access to Jenkins master file system. Find mitigation steps and prevention measures.
The Jenkins WebSphere Deployer Plugin version 1.6.1 and earlier has a vulnerability that allows attackers with specific permissions to conduct connection tests and potentially access files on the Jenkins master file system.
Understanding CVE-2019-16559
This CVE involves a missing permission check in the Jenkins WebSphere Deployer Plugin, potentially leading to unauthorized access.
What is CVE-2019-16559?
A vulnerability in the Jenkins WebSphere Deployer Plugin version 1.6.1 and earlier allows attackers with certain permissions to perform connection tests and check for file existence on the Jenkins master file system.
The Impact of CVE-2019-16559
This vulnerability enables attackers with Overall/Read permission to potentially access files on the Jenkins master file system by conducting connection tests.
Technical Details of CVE-2019-16559
The technical aspects of the CVE provide insight into the vulnerability and affected systems.
Vulnerability Description
The missing permission check in the Jenkins WebSphere Deployer Plugin version 1.6.1 and earlier allows attackers to determine file existence on the Jenkins master file system.
Affected Systems and Versions
- Product: Jenkins WebSphere Deployer Plugin
- Vendor: Jenkins project
- Versions Affected: <= 1.6.1, next of 1.6.1
Exploitation Mechanism
Attackers with Overall/Read permission can exploit this vulnerability to conduct connection tests and potentially access files on the Jenkins master file system.
Mitigation and Prevention
Protecting systems from CVE-2019-16559 involves immediate actions and long-term security practices.
Immediate Steps to Take
- Upgrade the Jenkins WebSphere Deployer Plugin to a secure version.
- Restrict permissions to prevent unauthorized access.
Long-Term Security Practices
- Regularly monitor and audit permissions within Jenkins.
- Educate users on secure coding practices to prevent similar vulnerabilities.
Patching and Updates
Ensure timely patching and updates for the Jenkins WebSphere Deployer Plugin to address this vulnerability.