CVE-2022-34171 Explained : Impact and Mitigation

Jenkins 2.321 through 2.355 and LTS 2.332.1 through LTS 2.332.3 are susceptible to a cross-site scripting (XSS) vulnerability due to improper handling of 'title' and 'alt' attributes in SVG icons.

Understanding CVE-2022-20657

This CVE affects Jenkins versions 2.321 through 2.355 and LTS versions 2.332.1 through 2.332.3, exposing them to a cross-site scripting vulnerability.

What is CVE-2022-20657?

In Jenkins, the HTML output generated for new symbol-based SVG icons contains 'title' and 'alt' attributes that are not properly escaped, leading to a cross-site scripting vulnerability.

The Impact of CVE-2022-20657

The vulnerability allows attackers to inject malicious scripts into web pages viewed by users, potentially leading to data theft, privilege escalation, or other malicious activities.

Technical Details of CVE-2022-20657

This section provides a detailed overview of the vulnerability.

Vulnerability Description

The XSS vulnerability arises from the unescaped 'title' and 'alt' attributes in SVG icons generated by Jenkins, allowing attackers to execute arbitrary code in the context of an unsuspecting user.

Affected Systems and Versions

Jenkins versions 2.321 through 2.355 and LTS versions 2.332.1 through 2.332.3 are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the 'title' and 'alt' attributes of symbol-based SVG icons, which are then executed within the context of the user's browser.

Mitigation and Prevention

Learn how to protect your systems from CVE-2022-20657.

Immediate Steps to Take

To mitigate the risk, organizations are advised to update Jenkins to the latest patched versions that address the XSS vulnerability. Additionally, it is recommended to sanitize user input and validate all incoming data to prevent XSS attacks.

Long-Term Security Practices

Regularly monitor security advisories from Jenkins, apply security patches promptly, and train users to recognize and report suspicious activities to enhance overall cybersecurity posture.

Patching and Updates

Stay informed about security updates and patches released by Jenkins to address vulnerabilities like CVE-2022-20657 promptly.