CVE-2020-2205 : What You Need to Know

Jenkins VncRecorder Plugin 1.25 and earlier versions are affected by a stored cross-site scripting (XSS) vulnerability that can be exploited by Jenkins administrators.

Understanding CVE-2020-2205

Jenkins VncRecorder Plugin is susceptible to a security issue that allows for XSS attacks, potentially compromising the integrity of the system.

What is CVE-2020-2205?

This CVE refers to a vulnerability in Jenkins VncRecorder Plugin versions 1.25 and below, where a lack of proper input validation leads to a stored cross-site scripting vulnerability.

The Impact of CVE-2020-2205

The vulnerability in Jenkins VncRecorder Plugin could allow an attacker to execute malicious scripts in the context of a Jenkins administrator, potentially leading to unauthorized actions and data theft.

Technical Details of CVE-2020-2205

Jenkins VncRecorder Plugin's vulnerability can be further understood through the following technical details:

Vulnerability Description

The issue arises from the plugin's failure to escape a tool path in the

checkVncServ

form validation endpoint, enabling the injection of malicious scripts.

Affected Systems and Versions

Product: Jenkins VncRecorder Plugin
Vendor: Jenkins project
Versions Affected: <= 1.25 (unspecified version type)

Exploitation Mechanism

The vulnerability can be exploited by Jenkins administrators to inject and execute malicious scripts through the affected form validation endpoint.

Mitigation and Prevention

To address and prevent the risks associated with CVE-2020-2205, consider the following steps:

Immediate Steps to Take

Update Jenkins VncRecorder Plugin to a patched version that addresses the XSS vulnerability.
Monitor system logs for any suspicious activities that might indicate an ongoing attack.

Long-Term Security Practices

Implement regular security audits and code reviews to identify and mitigate vulnerabilities proactively.
Educate Jenkins administrators on secure coding practices and the importance of input validation.

Patching and Updates

Stay informed about security advisories and updates from Jenkins project to promptly apply patches and fixes to vulnerable systems.