CVE-2021-32620 : What You Need to Know

A security vulnerability, CVE-2021-32620, impacts XWiki Platform versions < 11.10.13, >= 12.6.0, < 12.6.7, and >= 12.10.0, < 12.10.2. This CVE allows users disabled on a wiki using email verification for registration to self re-activate their accounts, posing a high risk for confidentiality, integrity, and availability.

Understanding CVE-2021-32620

This section will delve into the details of the vulnerability, its impact, technical aspects, and mitigation steps.

What is CVE-2021-32620?

XWiki Platform, a generic wiki platform, allows users to re-activate their disabled accounts by exploiting an issue related to email verification for registration.

The Impact of CVE-2021-32620

The vulnerability can lead to unauthorized re-activation of disabled accounts, compromising confidentiality, integrity, and availability.

Technical Details of CVE-2021-32620

Let's explore the technical specifics of this security flaw in XWiki Platform.

Vulnerability Description

In versions prior to 11.10.13, 12.6.7, and 12.10.2, disabled users can self re-activate using the provided activation link. The issue is mitigated in versions 11.10.13, 12.6.7, 12.10.2, and 13.0.

Affected Systems and Versions

XWiki Platform versions < 11.10.13, >= 12.6.0, < 12.6.7, and >= 12.10.0, < 12.10.2 are affected by this vulnerability.

Exploitation Mechanism

Users disabled on a wiki with email verification can exploit the activation link to self re-activate their accounts.

Mitigation and Prevention

Discover the steps to secure your XWiki Platform installation against CVE-2021-32620.

Immediate Steps to Take

Admins can mitigate the vulnerability by resetting the 'validkey' property of disabled XWiki users through the object editor.

Long-Term Security Practices

Regularly update XWiki Platform to secure patched versions that address this issue.

Patching and Updates

Ensure your XWiki Platform is updated to versions 11.10.13, 12.6.7, 12.10.2, or 13.0 to prevent users from self re-activating disabled accounts.