CVE-2020-11022 : Vulnerability Insights and Analysis

This CVE involves a potential XSS vulnerability in jQuery versions >= 1.2 and < 3.5.0, allowing the execution of untrusted code. The issue is resolved in jQuery 3.5.0.

Understanding CVE-2020-11022

In this section, we will delve into the details of the XSS vulnerability found in jQuery.

What is CVE-2020-11022?

CVE-2020-11022 is a Cross-Site Scripting (XSS) vulnerability present in jQuery versions greater than or equal to 1.2 and before 3.5.0. It allows the execution of untrusted code when passing HTML from untrusted sources to jQuery's DOM manipulation methods.

The Impact of CVE-2020-11022

The vulnerability poses a medium severity risk with a CVSS base score of 6.9. It can lead to high confidentiality impact and low integrity impact.

Technical Details of CVE-2020-11022

Let's explore the technical aspects of this vulnerability.

Vulnerability Description

The issue arises from improper neutralization of input during web page generation, specifically related to 'Cross-site Scripting' (CWE-79).

Affected Systems and Versions

Vendor: jQuery
Product: jQuery
Affected Versions: >= 1.2, < 3.5.0

Exploitation Mechanism

The vulnerability can be exploited by passing HTML from untrusted sources to jQuery's DOM manipulation methods, such as .html(), .append(), and others.

Mitigation and Prevention

To address and prevent the exploitation of CVE-2020-11022, follow these steps:

Immediate Steps to Take

Update jQuery to version 3.5.0 or newer to mitigate the vulnerability.
Avoid passing HTML from untrusted sources to jQuery DOM manipulation methods.

Long-Term Security Practices

Regularly update software components to the latest secure versions.
Implement input validation and output encoding to prevent XSS attacks.

Patching and Updates

Apply patches provided by jQuery to fix the vulnerability.