CVE-2023-37919 : Exploit Details and Defense Strategies

Cal.com not expiring old sessions after enabling 2FA

Understanding CVE-2023-37919

This CVE identifies a vulnerability in Cal.com, open-source scheduling software, that fails to expire active sessions associated with an account even after enabling 2FA.

What is CVE-2023-37919?

Cal.com, a scheduling software, allows active sessions to persist post enabling 2FA, leaving accounts logged in on multiple devices without re-verifying the account owner's identity.

The Impact of CVE-2023-37919

This vulnerability poses a risk of unauthorized access as sessions remain active on devices even after enabling 2FA, potentially leading to data breaches and compromised account security.

Technical Details of CVE-2023-37919

Cal.com version <= 3.1.4 is affected by this vulnerability.

Vulnerability Description

The flaw allows accounts to stay logged in on devices without needing to re-authenticate, compromising security post enabling 2FA.

Affected Systems and Versions

Cal.com versions <= 3.1.4 are impacted by this security issue, exposing users to continued unauthorized access.

Exploitation Mechanism

By not expiring active sessions after enabling 2FA, threat actors can maintain access to accounts without re-verifying user identity.

Mitigation and Prevention

It is crucial to take immediate steps for security enhancement and implement long-term practices to safeguard against this vulnerability.

Immediate Steps to Take

Users should manually log out of all Cal.com sessions after enabling 2FA and monitor account activity for any unauthorized access.

Long-Term Security Practices

Regularly review security settings, enable session management features, and consider implementing multi-factor authentication to enhance overall account security.

Patching and Updates

At present, there are no known patches or workarounds available for this vulnerability in Cal.com version <= 3.1.4.