CVE-2019-10402 : Vulnerability Insights and Analysis

Jenkins 2.196 and earlier, LTS 2.176.3 and earlier versions are affected by a stored XSS vulnerability in the f:combobox form control.

Understanding CVE-2019-10402

This CVE identifies a security issue in Jenkins versions prior to 2.196 and LTS 2.176.3, allowing users to exploit a stored XSS vulnerability.

What is CVE-2019-10402?

This vulnerability in Jenkins versions before 2.196 and LTS 2.176.3 enables users with permission to define the f:combobox form control's contents to execute a stored XSS attack by interpreting item labels as HTML.

The Impact of CVE-2019-10402

The vulnerability could be exploited by malicious users to inject and execute arbitrary scripts within the context of the affected Jenkins application, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2019-10402

Jenkins 2.196 and earlier, LTS 2.176.3 and earlier versions are susceptible to this stored XSS vulnerability.

Vulnerability Description

The f:combobox form control in affected Jenkins versions interprets item labels as HTML, allowing users to store malicious scripts that can be executed within the application.

Affected Systems and Versions

Jenkins versions prior to 2.196
LTS versions before 2.176.3

Exploitation Mechanism

Users with permission to define the f:combobox form control's contents can exploit this vulnerability by inserting malicious scripts in item labels, which are then executed as HTML.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2019-10402.

Immediate Steps to Take

Upgrade Jenkins to version 2.196 or later, LTS 2.176.3 or newer to mitigate the vulnerability.
Restrict access permissions for users who can define form control contents.

Long-Term Security Practices

Regularly update Jenkins to the latest secure versions to prevent known vulnerabilities.
Educate users on secure coding practices to avoid introducing vulnerabilities.

Patching and Updates

Apply security patches provided by Jenkins to fix the vulnerability and enhance the overall security posture of the system.