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ESB-2014.0983 - [Appliance] IBM Security Network Protection: Denial of service - Remote/unauthenticated

Date: 16 June 2014
References: ESB-2014.0679  ESB-2014.0714  ESB-2014.0764  ESB-2014.0783  ESB-2014.0886  

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.0983
         Security Bulletin: IBM Security Network Protection System
                      CPU utilization (CVE-2014-0963)
                               16 June 2014

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM Security Network Protection
Publisher:         IBM
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-0963  

Reference:         ESB-2014.0886
                   ESB-2014.0783
                   ESB-2014.0764
                   ESB-2014.0714
                   ESB-2014.0679

Original Bulletin: 
   http://www-01.ibm.com/support/docview.wss?uid=swg21675355

- --------------------------BEGIN INCLUDED TEXT--------------------

Security Bulletin: IBM Security Network Protection System CPU utilization
(CVE-2014-0963)

Security Bulletin

Document information

More support for:
IBM Security Network Protection

Software version:
5.1, 5.1.1, 5.1.2, 5.1.2.1, 5.2.0

Operating system(s):
Firmware

Reference #:
1675355

Modified date:
2014-06-05

Summary

IBM Security Network Protection System 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:
IBM Security Network Protection System 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 the IBM Security
Network Protection System 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, authentication is not required and the exploit is moderately
complex.

To determine if your systems are being affected by this issue, you can
monitor the CPU utilization for IBM Security Network Protection System
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)

Affected Products and Versions

Products: IBM Security Network Protection (XGS) models 3100, 4100, 5100

Firmware versions: 5.1, 5.1.1, 5.1.2, 5.1.2.1, 5.2

Remediation/Fixes

IBM has provided patches for all affected versions. Follow the installation
instructions in the README files included with the patch.

5.1.0.0-ISS-XGS-All-Models-Hotfix-FP0009 for IBM Security Network Protection
products at version 5.1
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Security%2BSystems&product=ibm/Tivoli/IBM+Security+Network+Protection&release=5.1&platform=Windows&function=all

5.1.1.0-ISS-XGS-All-Models-Hotfix-FP0004 for IBM Security Network Protection
products at version 5.1.1
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Security%2BSystems&product=ibm/Tivoli/IBM+Security+Network+Protection&release=5.1.1&platform=Windows&function=all

5.1.2.0-ISS-XGS-All-Models-Hotfix-FP0005 for IBM Security Network Protection
products at version 5.1.2
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Security%2BSystems&product=ibm/Tivoli/IBM+Security+Network+Protection&release=5.1.2&platform=Windows&function=all

5.1.2.1-ISS-XGS-All-Models-Hotfix-FP0001 for IBM Security Network Protection
products at version 5.1.2.1
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Security%2BSystems&product=ibm/Tivoli/IBM+Security+Network+Protection&release=5.1.2&platform=Windows&function=all

5.2.0.0-ISS-XGS-All-Models-Hotfix-FP0001 for IBM Security Network Protection
products at version 5.2
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Security%2BSystems&product=ibm/Tivoli/IBM+Security+Network+Protection&release=5.2&platform=Windows&function=all

Workarounds and Mitigations

None

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.

- --------------------------END INCLUDED TEXT--------------------

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===========================================================================
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===========================================================================
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