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Security Bulletin: IBM Security Access Manager for Enterprise Single Sign-On Forceful Browsing attack can allow help desk users access to information without appropriate permissions (CVE-2013-5420)

Security Bulletin


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.

Vulnerability Details


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 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


Workarounds and Mitigations


Get Notified about Future Security Bulletins


Complete CVSS v2 Guide
On-line Calculator v2

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

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 Security Bulletin.


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.

Document information

More support for: IBM Security Access Manager for Enterprise Single Sign-On
General Information

Software version: 8.2

Operating system(s): Windows

Reference #: 1660211

Modified date: 08 March 2017

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