CVE-2019-14884 : Exploit Details and Defense Strategies

A security weakness has been discovered in versions of Moodle prior to 3.7.3, 3.6.7, and 3.5.9, allowing for a potential cross-site scripting (XSS) attack.

Understanding CVE-2019-14884

This CVE pertains to a vulnerability in Moodle versions 3.7.3, 3.6.7, and 3.5.9 that could lead to a cross-site scripting (XSS) attack.

What is CVE-2019-14884?

CVE-2019-14884 is a security vulnerability found in Moodle versions 3.7.3, 3.6.7, and 3.5.9, enabling the possibility of a cross-site scripting (XSS) attack through certain error messages reflected back to the user.

The Impact of CVE-2019-14884

The vulnerability poses a medium severity risk with a CVSS base score of 6.1. It requires user interaction and can result in low confidentiality and integrity impacts.

Technical Details of CVE-2019-14884

Vulnerability Description

The vulnerability in Moodle versions prior to 3.7.3, 3.6.7, and 3.5.9 allows for a reflected XSS attack through specific error messages.

Affected Systems and Versions

Affected Product: Moodle
Affected Versions: 3.7.3, 3.6.7, 3.5.9

Exploitation Mechanism

The vulnerability can be exploited by crafting malicious error messages that, when triggered, lead to a cross-site scripting attack.

Mitigation and Prevention

Immediate Steps to Take

Update Moodle to version 3.7.3, 3.6.7, or 3.5.9 to mitigate the vulnerability.
Educate users about the risks of clicking on suspicious links or messages.

Long-Term Security Practices

Regularly monitor and update Moodle installations to patch any security vulnerabilities.
Implement web application firewalls and security plugins to prevent XSS attacks.

Patching and Updates

Ensure timely installation of security patches and updates provided by Moodle to address known vulnerabilities.