VMware Horizon DaaS Two-Factor Authentication Bypass

Authors:Peter Ivezaj          Risk:Medium

CVE:CVE-2018-6960            0day:Authentication Bypass

0day-id:0DAY-6960             Date:2018-04-22

Summary

A vulnerability in VMware Horizon Desktop as a Service (DaaS) could allow an authenticated, remote attacker to bypass two-factor authentication on a targeted system.

The vulnerability is due to improper security restrictions imposed by the affected software. An attacker that has a legitimate account on the affected application could exploit this vulnerability to bypass two-factor authentication on a targeted system.

VMware has confirmed the vulnerability and released software updates.

Analysis

To exploit this vulnerability, the attacker must have user-level access to the targeted system. This access requirement could reduce the likelihood of a successful exploit.

Safeguards

Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to have network access.

Administrators are advised to run both firewall and antivirus applications to minimize the potential of inbound and outbound threats.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

Administrators can help protect affected systems from external attacks by using a solid firewall strategy.

Administrators are advised to monitor affected systems.

Vendor Announcements

VMware has released a security advisory at the following link: VMSA-2018-0010

Fixed Software

VMware has released a software updates for registered users at the following link: Horizon DaaS 8.0

Revision History

Version Description Section Date
1 Initial public release. 2018-April-20

Affected Products

The security vulnerability applies to the following combinations of products. 

Primary Products
VMware, Inc. Horizon DaaS Platform 7.0 (.0)

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