Artiva Agency Single Sign-On (SSO) feature vulnerability

Overview
Artiva Agency Single Sign-On (SSO) feature checks only the local Windows login name which could allow an attacker to impersonate another Artiva Agency user.
Description
Artiva Agency Single Sign-On (SSO) feature when configured with the domain name option allows the currently logged on Windows user to automatically be logged into the Artiva Agency application using the same username without any additional authentication. Artiva Agency Single Sign-On (SSO) checks only the local Window login name and as a result does not take into consideration the associated user's domain name. By creating a local Windows user account with the same username as a Windows domain account, Artiva Agency will allow the attacker to login as the domain account to the Artiva Agency application.
Impact
An unauthenticated Artiva Agency user can create a local Windows user account with the same username as a Windows domain account and Artiva Agency will allow the attacker to login as the domain account to the Artiva Agency application.
Solution
Update
The vendor has released an update to address this vulnerability. Affected users are advised to update to Artiva Workstation 1.3.9 or later. The vendor has stated that additional setup work in the Artiva application is required.
Vendor Information (Learn More)
It has been reported to us that this vulnerability affects the following Artiva line products and versions:
Artiva Rm 3.1 MR7 or newer
Artiva Healthcare 5.2 MR5 or newer
Artiva Architect 3.2 MR5 or newer
Workstation 1.3.0 or newer
Vendor Status Date Notified Date Updated
Ontario Systems Unknown 23 Jan 2014 23 Jan 2014
If you are a vendor and your product is affected, let us know.
CVSS Metrics (Learn More)
Group Score Vector
Base 1.5 AV:L/AC:M/Au:S/C:P/I:N/A:N
Temporal 1.2 E:F/RL:OF/RC:C
Environmental 0.5 CDP:L/TD:L/CR:ND/IR:ND/AR:ND
References
http://www.ontariosystems.com/products/artiva
Credit
Thanks to the reporter that wishes to remain anonymous.
This document was written by Michael Orlando.
Other Information
CVE IDs: CVE-2014-0348
Date Public: 01 4월 2014
Date First Published: 14 4월 2014
Date Last Updated: 14 4월 2014
Document Revision: 12