CVE-2021-41086 Explained : Impact and Mitigation

jsuites is an open source collection of common required javascript web components. In affected versions, users are subject to cross-site scripting (XSS) attacks via clipboard content. This vulnerability allows for DOM-based XSS if users unknowingly paste malicious content into the HTML editor, enabling JavaScript injection. It is recommended to update to version 4.9.11 to address this issue.

Understanding CVE-2021-41086

Clipboard-based XSS vulnerability in jsuites.

What is CVE-2021-41086?

jsuites, an open-source collection of javascript web components, is susceptible to cross-site scripting (XSS) attacks that occur when users copy and paste content from the clipboard. This vulnerability can lead to DOM-based XSS and JavaScript injection.

The Impact of CVE-2021-41086

CVSS Score: 8.7 (High)
Severity: High
Attack Vector: Network
Privileges Required: Low
User Interaction: Required
Confidentiality Impact: High
Integrity Impact: High
Scope: Changed
Attack Complexity: Low
Availability Impact: None

Technical Details of CVE-2021-41086

Details about the vulnerability in jsuites.

Vulnerability Description

The vulnerability in jsuites allows for cross-site scripting (XSS) attacks through clipboard content, leading to the potential for DOM-based XSS by injecting malicious JavaScript.

Affected Systems and Versions

Affected Product: jsuites
Vendor: jsuites
Vulnerable Versions: < 4.9.11

Exploitation Mechanism

Users can unknowingly trigger the vulnerability by copying and pasting malicious content from the clipboard into the HTML editor, resulting in JavaScript injection and XSS.

Mitigation and Prevention

Guidelines to mitigate and prevent the vulnerability.

Immediate Steps to Take

Update jsuites to version 4.9.11 to eliminate the vulnerability.
Educate users to avoid pasting content from unknown or untrusted sources into the HTML editor.

Long-Term Security Practices

Regularly update jsuites to the latest versions to patch security vulnerabilities.
Implement content security policies (CSP) to mitigate XSS risks.

Patching and Updates

Monitor vendor updates and security advisories for any patches or fixes related to XSS vulnerabilities in jsuites.