CVE-2019-10383 : Security Advisory and Response

A stored cross-site scripting vulnerability in Jenkins versions 2.191 and earlier, as well as LTS versions 2.176.2 and earlier, allowed attackers with Overall/Administer permission to manipulate the update site URL, injecting arbitrary HTML and JavaScript into the update center web pages.

Understanding CVE-2019-10383

This CVE involves a stored cross-site scripting vulnerability in Jenkins that could be exploited by attackers with specific permissions.

What is CVE-2019-10383?

Attackers with Overall/Administer permission could exploit a stored cross-site scripting vulnerability in Jenkins versions 2.191 and earlier, as well as LTS versions 2.176.2 and earlier.
This vulnerability allowed manipulation of the update site URL, enabling the injection of desired HTML and JavaScript into the web pages of the update center.

The Impact of CVE-2019-10383

Attackers could potentially execute malicious scripts within the context of a user's session, leading to various security risks.

Technical Details of CVE-2019-10383

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in Jenkins versions 2.191 and earlier, as well as LTS versions 2.176.2 and earlier, allowed attackers to perform stored cross-site scripting attacks.

Affected Systems and Versions

Affected Product: Jenkins
Vendor: Jenkins project
Vulnerable Versions: 2.191 and earlier, LTS 2.176.2 and earlier

Exploitation Mechanism

Attackers with Overall/Administer permission could exploit the vulnerability by manipulating the update site URL to inject malicious HTML and JavaScript.

Mitigation and Prevention

Protecting systems from CVE-2019-10383 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade Jenkins to a non-vulnerable version to mitigate the risk.
Restrict Overall/Administer permissions to trusted users only.

Long-Term Security Practices

Regularly monitor and audit Jenkins configurations and plugins for security vulnerabilities.
Educate users on safe practices to prevent cross-site scripting attacks.

Patching and Updates

Apply security patches and updates provided by Jenkins to address the vulnerability effectively.