CVE-2021-37703 : Security Advisory and Response

Discourse before versions 2.7.8 and 2.8.0.beta5 exposes a user's read state for a topic, leading to an exposure of sensitive information to unauthorized actors.

Understanding CVE-2021-37703

This CVE highlights an information exposure vulnerability in Discourse.

What is CVE-2021-37703?

Discourse, an open-source platform for community discussion, inadvertently exposes a user's read state for a topic, including the last read post number and notification level.

The Impact of CVE-2021-37703

This vulnerability allows unauthorized actors to access sensitive information, posing a risk to user privacy and confidentiality.

Technical Details of CVE-2021-37703

In-depth analysis of the vulnerability.

Vulnerability Description

The vulnerability in Discourse versions before 2.7.8 and 2.8.0.beta5 exposes user read states, facilitating unauthorized access to sensitive information.

Affected Systems and Versions

Discourse versions prior to 2.7.8 and 2.8.0.beta5 are impacted by this vulnerability.

Exploitation Mechanism

Exploiting this vulnerability requires network access and user interaction, with low attack complexity and no privileges required.

Mitigation and Prevention

Guidelines to address and prevent the CVE.

Immediate Steps to Take

Users are advised to update Discourse to versions 2.7.8 or 2.8.0.beta5 to mitigate the risk of information exposure.

Long-Term Security Practices

Implement access controls, user notifications, and regular security assessments to enhance data protection.

Patching and Updates

Regularly apply security patches and updates to Discourse to address vulnerabilities and enhance system security.