CVE-2019-3810 : What You Need to Know

CVE-2019-3810 is a vulnerability found in various versions of Moodle, affecting user information display. Learn about its impact, technical details, and mitigation steps.

Understanding CVE-2019-3810

What is CVE-2019-3810?

The vulnerability in Moodle versions 3.6 to 3.6.1, 3.5 to 3.5.3, 3.4 to 3.4.6, 3.1 to 3.1.15, and earlier unsupported versions allows improper encoding of users' full names on the /userpix/ page, potentially leading to information exposure.

The Impact of CVE-2019-3810

This vulnerability could be exploited by displaying unencoded full names when hovering over profile images, posing a risk of unauthorized access to sensitive user information.

Technical Details of CVE-2019-3810

Vulnerability Description

The issue stems from the inadequate encoding of user names on the /userpix/ page in Moodle, making it possible for attackers to view user names as plain text.

Affected Systems and Versions

Vendor: [UNKNOWN]
Product: Moodle
Affected Versions: 3.6.2, 3.5.4, 3.4.7, 3.1.16

Exploitation Mechanism

The vulnerability can be exploited by hovering over profile images in Moodle, where user names are displayed as text due to improper encoding.

Mitigation and Prevention

Immediate Steps to Take

Restrict access to the /userpix/ page to authorized users only.
Implement proper input validation and encoding mechanisms to prevent information exposure.

Long-Term Security Practices

Regularly update Moodle to the latest version to patch known vulnerabilities.
Educate users on safe browsing practices and the importance of data privacy.

Patching and Updates

Ensure timely installation of security patches released by Moodle to address CVE-2019-3810 and other potential vulnerabilities.