CVE-2021-27913 : Security Advisory and Response

A vulnerability has been identified in the Mautic platform that allows an attacker to exploit the cryptographically flawed 'mt_rand' function, potentially compromising session tokens. This CVE impacts Mautic versions prior to 3.3.4 and versions prior to 4.0.0.

Understanding CVE-2021-27913

This section delves into the details of the cryptographic vulnerability affecting Mautic.

What is CVE-2021-27913?

The vulnerability lies in the improper use of the 'mt_rand' function, leading to the insecure generation of session tokens in Mautic.

The Impact of CVE-2021-27913

Exploiting this vulnerability could allow an attacker to enumerate session tokens for unauthorized access to user accounts.

Technical Details of CVE-2021-27913

Explore the technical aspects of the cryptographic flaw within Mautic.

Vulnerability Description

The flaw stems from the use of the cryptographically flawed 'mt_rand' function, which can be abused to bypass session token protections.

Affected Systems and Versions

Mautic versions prior to 3.3.4 and versions before 4.0.0 are susceptible to this security issue.

Exploitation Mechanism

Attackers can leverage the insecure 'mt_rand' function to guess session tokens and gain unauthorized access to accounts.

Mitigation and Prevention

Discover the steps to mitigate the risk posed by CVE-2021-27913.

Immediate Steps to Take

Users are advised to update Mautic to versions 3.3.4 or 4.0.0 to patch the vulnerability and enhance security.

Long-Term Security Practices

Implement secure random number generation functions in the application to prevent similar vulnerabilities in the future.

Patching and Updates

Regularly check for security updates and apply patches promptly to defend against potential exploits.