CVE-2021-3138 : Security Advisory and Response

Discourse 2.7.0 through beta1 has a vulnerability that allows a rate-limit bypass leading to a bypass of the 2FA requirement for certain forms.

Understanding CVE-2021-3138

This section provides insights into the vulnerability and its impact.

What is CVE-2021-3138?

CVE-2021-3138 affects Discourse 2.7.0 through beta1, enabling a rate-limit bypass that results in bypassing the 2FA requirement for specific forms.

The Impact of CVE-2021-3138

The vulnerability in Discourse can be exploited to circumvent the 2FA protection, potentially allowing unauthorized access to sensitive information.

Technical Details of CVE-2021-3138

Let's explore the technical aspects of this CVE in more detail.

Vulnerability Description

In Discourse 2.7.0 through beta1, the rate-limit bypass facilitates unauthorized users to skip the 2FA authentication on certain forms.

Affected Systems and Versions

The vulnerability impacts Discourse versions 2.7.0 through beta1 specifically, leaving them exposed to the 2FA bypass.

Exploitation Mechanism

Attackers can exploit this vulnerability by utilizing the rate-limit bypass to evade the 2FA protection on the affected Discourse forms.

Mitigation and Prevention

Discover how to secure your systems against CVE-2021-3138.

Immediate Steps to Take

It is recommended to update Discourse to a patched version that resolves the rate-limit bypass vulnerability and enforces 2FA properly.

Long-Term Security Practices

Implement robust security measures such as regular security audits, employee training, and access control to prevent similar vulnerabilities.

Patching and Updates

Stay vigilant for security updates from Discourse and apply patches promptly to mitigate the risk of 2FA bypass.