The Enterprise Single Sign On (ESSO) application is vulnerable to forceful browsing attacks. These attacks permit users of the system to access features to which they are not authorized by simply browsing directly to the URL of those features.
Helpdesk users are able to view logs for the application, despite not having access to the links. While helpdesk users are able to retrieve information, they are unable to make changes. The attack requires network access, authentication and some degree of specialized knowledge and techniques. An attack can compromise the confidentiality of information but not the integrity of data or availability of the system.
CVSS Base Score: 3.5
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/87482 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:S/C:P/I:N/A:N)
AFFECTED PRODUCTS AND VERSIONS:
IBM Security Access Manager for Enterprise Single Sign On 8.2
Download ISAM ESSO IMS Ifix 6
· Complete CVSS Guide
· On-line Calculator V2
· IBM Security Alerts
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
· 20 December 2013: Original copy published
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Flash.
Note: According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.