CVE-2020-2194 : Exploit Details and Defense Strategies

Jenkins ECharts API Plugin 4.7.0-3 and earlier versions are affected by a stored cross-site scripting vulnerability due to improper escaping of the display name in the trend chart.

Understanding CVE-2020-2194

This CVE involves a security issue in the Jenkins ECharts API Plugin that allows for stored cross-site scripting attacks.

What is CVE-2020-2194?

CVE-2020-2194 is a vulnerability in Jenkins ECharts API Plugin versions 4.7.0-3 and earlier, where the display name of builds in the trend chart is not properly escaped, leading to a stored cross-site scripting vulnerability.

The Impact of CVE-2020-2194

The vulnerability could allow an attacker to inject malicious scripts into the trend chart, potentially leading to unauthorized access, data theft, or further attacks on users interacting with the affected Jenkins instance.

Technical Details of CVE-2020-2194

The technical aspects of the vulnerability are as follows:

Vulnerability Description

Jenkins ECharts API Plugin 4.7.0-3 and earlier versions do not escape the display name of builds in the trend chart, enabling a stored cross-site scripting vulnerability.

Affected Systems and Versions

Product: Jenkins ECharts API Plugin
Vendor: Jenkins project
Versions Affected: <= 4.7.0-3 (custom version)

Exploitation Mechanism

The vulnerability can be exploited by an attacker injecting malicious scripts into the display name of builds, which are then rendered unsafely in the trend chart, allowing for cross-site scripting attacks.

Mitigation and Prevention

To address CVE-2020-2194 and enhance overall security, consider the following steps:

Immediate Steps to Take

Update Jenkins ECharts API Plugin to a patched version that addresses the vulnerability.
Monitor the Jenkins security advisory page for any related updates or patches.

Long-Term Security Practices

Regularly review and update all Jenkins plugins to their latest secure versions.
Implement secure coding practices to prevent cross-site scripting vulnerabilities in custom plugins.

Patching and Updates

Apply patches or updates provided by Jenkins project for the ECharts API Plugin to mitigate the vulnerability.