CVE-2018-1000864 : Exploit Details and Defense Strategies
Learn about CVE-2018-1000864, a denial of service vulnerability in Jenkins versions 2.153 and earlier, allowing attackers to cause request handling threads to enter endless loops. Find out how to mitigate and prevent this issue.
An issue of denial of service vulnerability has been discovered in CronTab.java in Jenkins versions 2.153 and earlier, as well as LTS versions 2.138.3 and earlier. This vulnerability enables attackers who possess Overall/Read permission to cause a request handling thread to enter an endless loop.
Understanding CVE-2018-1000864
This CVE involves a denial of service vulnerability in Jenkins that allows attackers with specific permissions to trigger an infinite loop in request handling.
What is CVE-2018-1000864?
CVE-2018-1000864 is a denial of service vulnerability found in Jenkins versions 2.153 and earlier, as well as LTS versions 2.138.3 and earlier. Attackers with specific permissions can exploit this issue to cause a request handling thread to enter an endless loop.
The Impact of CVE-2018-1000864
This vulnerability could be exploited by attackers with the necessary permissions to disrupt the normal operation of Jenkins, potentially leading to a denial of service condition.
Technical Details of CVE-2018-1000864
CVE-2018-1000864 involves a specific vulnerability in Jenkins that can be exploited under certain conditions.
Vulnerability Description
The vulnerability allows attackers with Overall/Read permission to manipulate a request handling thread, causing it to enter an infinite loop.
Affected Systems and Versions
- Jenkins versions 2.153 and earlier
- LTS versions 2.138.3 and earlier
Exploitation Mechanism
Attackers need to have Overall/Read permission to exploit this vulnerability and trigger the endless loop in the request handling thread.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of CVE-2018-1000864.
Immediate Steps to Take
- Update Jenkins to the latest version that includes a patch for this vulnerability.
- Restrict permissions to minimize the impact of potential attacks.
Long-Term Security Practices
- Regularly monitor and update Jenkins to ensure all security patches are applied promptly.
- Conduct security training for users to raise awareness of potential vulnerabilities and best practices.
Patching and Updates
Ensure that Jenkins is regularly updated with the latest security patches to mitigate the risk of exploitation.