CVE-2018-1999003 : Security Advisory and Response

Jenkins versions 2.132 and earlier, as well as 2.121.1 and earlier, contain a vulnerability in the Queue.java file that allows attackers with Overall/Read permission to cancel queued builds.

Understanding CVE-2018-1999003

This CVE involves an improper authorization vulnerability in Jenkins versions 2.132 and earlier, and 2.121.1 and earlier, specifically in the Queue.java file.

What is CVE-2018-1999003?

This CVE refers to a security flaw in Jenkins that enables users with Overall/Read permission to cancel queued builds, potentially leading to unauthorized actions within the system.

The Impact of CVE-2018-1999003

The vulnerability could be exploited by malicious actors with specific permissions to disrupt the build process and potentially cause unauthorized cancellations.

Technical Details of CVE-2018-1999003

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability in Jenkins allows users with Overall/Read permission to cancel queued builds, leading to potential disruptions in the build process.

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 this vulnerability to cancel queued builds, potentially causing disruptions and unauthorized actions.

Mitigation and Prevention

Protecting systems from CVE-2018-1999003 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Jenkins to the latest version that includes a patch for this vulnerability.
Restrict Overall/Read permissions to only trusted users.

Long-Term Security Practices

Regularly monitor and review user permissions within Jenkins.
Implement a least privilege access control policy to limit the impact of potential vulnerabilities.

Patching and Updates

Ensure timely patching and updates for Jenkins to address known vulnerabilities and enhance overall system security.