Summary


Blueworx Voice Response is affected by a problem related to the SSL implementation which, under very specific conditions, can cause CPU utilization to rapidly increase.

Vulnerability Details


CVE ID: CVE-2014-0963

Description:
Blueworx Voice Response is affected by a problem with the handling of certain SSL messages. The TLS implementation can, under very specific conditions, cause CPU utilization to rapidly increase. The situation occurs only in a certain error case that causes a single thread to begin looping. If this happens multiple times, more threads will begin to loop, and an increase in CPU utilization will be seen. This increase could ultimately result in CPU exhaustion and unresponsiveness of Blueworx Voice Response and other software running on the affected system.

This issue can affect the availability of the system, but does not impact system confidentiality or integrity. This vulnerability can be remotely exploited, without the need for authentication, but its exploitation is moderately complex.

To determine if your systems are being affected by this issue, you can monitor the CPU utilization for Blueworx Voice Response instances.

CVSS Base Score: 7.1
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/92844 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:C) CVE-2014-0963


Affected Products and Versions

Blueworx Voice Response 6.1


Remediation/Fixes

The fix is included in PTF U866706 and fix level 6.1.0.475. This can be downloaded from Blueworx support.

Follow the installation instructions in the README files included with the patch.

References


Complete CVSS v2 Guide
On-line Calculator v2

Related information


*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.


Disclaimer


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.