CVE-2020-5186 Explained : Impact and Mitigation

DNN (formerly DotNetNuke) through 9.4.4 allows XSS (issue 1 of 2).

Understanding CVE-2020-5186

DNN (formerly DotNetNuke) through version 9.4.4 is vulnerable to a cross-site scripting (XSS) attack.

What is CVE-2020-5186?

This CVE identifies a security issue in DNN (DotNetNuke) versions up to 9.4.4 that allows for cross-site scripting attacks.

The Impact of CVE-2020-5186

The vulnerability can be exploited by attackers to inject malicious scripts into web pages viewed by users, potentially leading to unauthorized access, data theft, or other malicious activities.

Technical Details of CVE-2020-5186

DNN (formerly DotNetNuke) through version 9.4.4 is susceptible to XSS attacks.

Vulnerability Description

The vulnerability in DNN allows attackers to execute malicious scripts in the context of an unsuspecting user's browser.

Affected Systems and Versions

Product: DNN (DotNetNuke)
Versions affected: Up to 9.4.4

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into web pages, which are then executed in the browsers of users visiting the compromised sites.

Mitigation and Prevention

Steps to address and prevent exploitation of CVE-2020-5186.

Immediate Steps to Take

Update DNN to the latest version to patch the vulnerability.
Implement input validation to sanitize user inputs and prevent script injection.
Regularly monitor and audit web applications for any signs of unauthorized script execution.

Long-Term Security Practices

Educate developers on secure coding practices to prevent XSS vulnerabilities.
Employ web application firewalls (WAFs) to filter and block malicious traffic.

Patching and Updates

Apply security patches and updates promptly to ensure protection against known vulnerabilities.