CVE-2019-7218 : Security Advisory and Response

Citrix ShareFile before version 19.23 had a vulnerability that allowed attackers to bypass two-factor authentication.

Understanding CVE-2019-7218

This CVE involves a security issue in Citrix ShareFile that enables the removal of two-factor authentication, reverting to one-factor authentication.

What is CVE-2019-7218?

Citrix ShareFile prior to version 19.23 had a vulnerability that permitted the bypassing of two-factor authentication, potentially compromising user accounts.

The Impact of CVE-2019-7218

The vulnerability in Citrix ShareFile could lead to unauthorized access to user accounts by exploiting the two-factor authentication downgrade.

Technical Details of CVE-2019-7218

This section provides in-depth technical insights into the CVE.

Vulnerability Description

The flaw in Citrix ShareFile allowed attackers with access to the victim's offline OTP token or virtual app to bypass the initial authentication phase, compromising security.

Affected Systems and Versions

Product: Citrix ShareFile
Versions affected: All versions before 19.23

Exploitation Mechanism

Attackers could exploit this vulnerability by gaining access to the victim's offline OTP token or virtual app, enabling them to bypass the initial authentication phase.

Mitigation and Prevention

Protecting systems from CVE-2019-7218 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade Citrix ShareFile to version 19.23 or newer to mitigate the vulnerability.
Enforce strong password policies and educate users on the importance of secure authentication practices.

Long-Term Security Practices

Implement multi-factor authentication with robust security measures.
Regularly monitor and audit user account activities for any suspicious behavior.

Patching and Updates

Stay informed about security updates and patches released by Citrix for ShareFile to address vulnerabilities promptly.