CVE-2018-1999002 : Vulnerability Insights and Analysis
Learn about CVE-2018-1999002, a Jenkins vulnerability allowing attackers to read files on the master file system. Find mitigation steps and long-term security practices here.
A vulnerability in Jenkins versions 2.132 and earlier, 2.121.1 and earlier allows attackers to retrieve file contents on the Jenkins master file system through crafted HTTP requests.
Understanding CVE-2018-1999002
This CVE involves an arbitrary file read vulnerability in the Stapler web framework of Jenkins, potentially exposing sensitive information.
What is CVE-2018-1999002?
The vulnerability in the org/kohsuke/stapler/Stapler.java file of Jenkins enables attackers to access files that the Jenkins master has permissions for, by sending malicious HTTP requests.
The Impact of CVE-2018-1999002
The vulnerability poses a risk of unauthorized access to sensitive files on the Jenkins master file system, potentially leading to data leakage and compromise of confidential information.
Technical Details of CVE-2018-1999002
This section provides in-depth technical insights into the vulnerability.
Vulnerability Description
The flaw in Jenkins versions 2.132 and earlier, 2.121.1 and earlier, allows attackers to exploit the Stapler web framework to retrieve file contents on the Jenkins master file system.
Affected Systems and Versions
- Jenkins versions 2.132 and earlier
- Jenkins versions 2.121.1 and earlier
Exploitation Mechanism
Attackers can exploit the vulnerability by crafting HTTP requests to access files on the Jenkins master file system that the master has permissions for.
Mitigation and Prevention
Protecting systems from CVE-2018-1999002 is crucial to prevent unauthorized access and data breaches.
Immediate Steps to Take
- Update Jenkins to the latest patched version to mitigate the vulnerability.
- Monitor and restrict network access to Jenkins to prevent unauthorized requests.
- Implement strong access controls and permissions on the Jenkins master file system.
Long-Term Security Practices
- Regularly audit and review file permissions on the Jenkins master to ensure only necessary access is granted.
- Conduct security training for users to recognize and report suspicious activities.
Patching and Updates
- Apply security patches promptly as they become available to address known vulnerabilities and enhance system security.