CVE-2018-1999004 : Exploit Details and Defense Strategies
Learn about CVE-2018-1999004, an authorization vulnerability in Jenkins versions 2.132 and earlier, 2.121.1 and earlier, allowing unauthorized manipulation of agent launches. Find mitigation steps and long-term security practices here.
Jenkins versions 2.132 and earlier, 2.121.1 and earlier, contain a vulnerability in the SlaveComputer.java file that allows attackers with Overall/Read permission to start and cancel agent launches without proper authorization.
Understanding CVE-2018-1999004
This CVE identifies an improper authorization vulnerability in Jenkins that could be exploited by attackers with specific permissions.
What is CVE-2018-1999004?
This CVE refers to a security flaw in Jenkins versions 2.132 and earlier, 2.121.1 and earlier, allowing unauthorized agent launch manipulation.
The Impact of CVE-2018-1999004
The vulnerability enables attackers with Overall/Read permission to initiate and terminate agent launches without appropriate authorization, potentially leading to unauthorized access and disruption.
Technical Details of CVE-2018-1999004
This section delves into the specific technical aspects of the vulnerability.
Vulnerability Description
The vulnerability resides in the SlaveComputer.java file of Jenkins, permitting unauthorized manipulation of agent launches by users with specific permissions.
Affected Systems and Versions
- Jenkins versions 2.132 and earlier
- Jenkins versions 2.121.1 and earlier
Exploitation Mechanism
Attackers with Overall/Read permission can exploit the vulnerability to start and cancel agent launches without the necessary authorization, potentially compromising system integrity.
Mitigation and Prevention
Protecting systems from CVE-2018-1999004 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Jenkins to the latest version to patch the vulnerability
- Restrict Overall/Read permissions to trusted users only
- Monitor agent launches for any unauthorized activities
Long-Term Security Practices
- Regularly review and adjust permission settings in Jenkins
- Conduct security training for users to raise awareness of proper authorization practices
Patching and Updates
- Apply security patches promptly to Jenkins to address the vulnerability and enhance system security