CVE-2019-1003059 : Exploit Details and Defense Strategies
Learn about CVE-2019-1003059 affecting Jenkins FTP publisher Plugin. Discover the impact, affected versions, and mitigation steps for this security vulnerability.
The FTP publisher Plugin in Jenkins has a vulnerability that allows attackers with specific permissions to establish connections to unauthorized servers.
Understanding CVE-2019-1003059
This CVE identifies a missing permission check in the Jenkins FTP publisher Plugin, enabling unauthorized server connections.
What is CVE-2019-1003059?
A vulnerability in the FTPPublisher.DescriptorImpl#doLoginCheck method of the Jenkins FTP publisher Plugin allows attackers with certain permissions to connect to attacker-specified servers.
The Impact of CVE-2019-1003059
- Attackers with Overall/Read permissions can establish connections to unauthorized servers.
Technical Details of CVE-2019-1003059
The technical aspects of this CVE are as follows:
Vulnerability Description
- The FTP publisher Plugin in Jenkins lacks a permission check in the doLoginCheck method, enabling unauthorized server connections.
Affected Systems and Versions
- Product: Jenkins FTP publisher Plugin
- Vendor: Jenkins project
- Affected Versions: All versions as of 2019-04-03
Exploitation Mechanism
- Attackers with Overall/Read permissions exploit the missing permission check to connect to specified servers.
Mitigation and Prevention
Protect your systems from CVE-2019-1003059 with these measures:
Immediate Steps to Take
- Update Jenkins FTP publisher Plugin to the latest version.
- Restrict Overall/Read permissions to trusted users.
Long-Term Security Practices
- Regularly review and update Jenkins plugins for security patches.
- Implement the principle of least privilege to limit user permissions.
Patching and Updates
- Apply security patches promptly to address vulnerabilities like the one in CVE-2019-1003059.