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AUSCERT External Security Bulletin Redistribution
ESB-2014.0815
Security Bulletin: WebSphere Voice Response CPU utilization (CVE-2014-0963)
23 May 2014
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AusCERT Security Bulletin Summary
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Product: IBM WebSphere Voice Response
Publisher: IBM
Operating System: AIX
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-0963
Reference: ESB-2014.0783
ESB-2014.0782
ESB-2014.0764
ESB-2014.0714
ESB-2014.0679
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21673245
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Security Bulletin: WebSphere Voice Response CPU utilization (CVE-2014-0963)
Security Bulletin
Document information
More support for:
WebSphere Voice Response for AIX
WebSphere Voice Response
Software version:
6.1
Operating system(s):
AIX
Software edition:
All Editions
Reference #:
1673245
Modified date:
2014-05-15
Summary
WebSphere 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:
WebSphere 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 WebSphere 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 WebSphere Voice Response instances.
CVSS Base Score: 7.1
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/92844
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
WebSphere Voice Response 6.1
Remediation/Fixes
IBM has provided patches for all affected versions. Follow the installation
instructions in the README files included with the patch.
The fix is included in PTF U866113 and fixlevel 6.1.0.459. This can be
downloaded from IBM Fix Central:
http://www.ibm.com/support/docview.wss?rs=761&uid=isg1IV60175
Detailed information regarding WebSphere Voice Response PTFs can be found
here:
http://www.ibm.com/support/docview.wss?uid=swg24013881
References
Complete CVSS Guide
On-line Calculator V2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
*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.
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