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ESB-2016.0537 - [Win][Linux][HP-UX][Solaris][AIX] IBM Integration Bus: Denial of service - Existing account

Date: 01 March 2016
References: ESB-2014.2430  ESB-2015.0067  ESB-2015.0570  

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

                               ESB-2016.0537
  Security Bulletin: WebSphere Message Broker and IBM Integration Bus are
        affected by denial of service vulnerability (CVE-2014-8901)
                               1 March 2016

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

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

Product:           IBM Integration Bus
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   Linux variants
                   Solaris
                   Windows
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-8901  

Reference:         ESB-2015.0570
                   ESB-2015.0067
                   ESB-2014.2430

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg21697458

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

Security Bulletin: WebSphere Message Broker and IBM Integration Bus are 
affected by denial of service vulnerability (CVE-2014-8901)

Document information

More support for:

IBM Integration Bus

Software version:

9.0, 10.0

Operating system(s):

AIX, HP-UX, Linux, Solaris, Windows

Reference #:

1697458

Modified date:

2016-02-29

Security Bulletin

Summary

WebSphere Message Broker and IBM Integration Bus are affected by denial of 
service vulnerability. Pattern matching while validating a specially crafted 
XML document causes XML4C to consume 100% CPU

Vulnerability Details

CVEID: CVE-2014-8901

DESCRIPTION: IBM XML4J and XML4C libraries contain a denial of service 
vulnerability when loading specially crafted content. This causes the CPU to 
consume 100% of available resources and creates serious performance 
degradation to the system.

CVSS Base Score: 4

CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/99110 for the 
current score

CVSS Environmental Score*: Undefined

CVSS Vector: (AV:N/AC:L/Au:S/C:N/I:N/A:P)

Affected Products and Versions

WebSphere Message Broker V8

IBM Integration Bus V9 and V10

Remediation/Fixes

Product 		VRMF 	APAR 		Remediation/Fix

IBM Integration Bus 	V10 	IT07064 	An interim fix is available from IBM Fix 
						Central for all platforms.

						http://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/WebSphere/Integration+Bus&release=All&platform=All&function=aparId&apars=IT07064

						The APAR is targeted to be available in fix pack 10.0.0.4

IBM Integration Bus 	V9 	IT07064 	An interim fix is available from IBM Fix 
						Central for all platforms.

						http://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/WebSphere/Integration+Bus&release=All&platform=All&function=aparId&apars=IT07064

						The APAR is targeted to be available in fix pack 9.0.0.6

WebSphere Message 
 Broker			V8	IT07064 	An interim fix is available from IBM Fix Central for all platforms.

						http://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/WebSphere/WebSphere+Message+Broker&release=All&platform=All&function=aparId&apars=IT07064

						The APAR is targeted to be available in fix pack 8.0.0.7

To mitigate the vulnerability, after an interim fix or fixpack containing 
IT07064 is applied you must set the following environment variable to disable
the use of regular expressions by the MRM parser before starting the broker or
integration node:

	MQSI_DISABLE_REGEX_IN_XML4C=yes

For unsupported versions of the product IBM recommends upgrading to a fixed, 
supported version/release/platform of the product.

The planned maintenance release dates for WebSphere Message Broker and IBM 
Integration Bus are available at :

http://www.ibm.com/support/docview.wss?uid=swg27006308

Workarounds and Mitigations

None known

Get Notified about Future Security Bulletins

Subscribe to My Notifications to be notified of important product support 
alerts like this.

Important note

IBM strongly suggests that all System z customers be subscribed to the System
z Security Portal to receive the latest critical System z security and 
integrity service. If you are not subscribed, see the instructions on the 
System z Security web site. Security and integrity APARs and associated fixes
will be posted to this portal. IBM suggests reviewing the CVSS scores and 
applying all security or integrity fixes as soon as possible to minimize any 
potential risk.

References

Complete CVSS v2 Guide

On-line Calculator v2

Related information

IBM Secure Engineering Web Portal

IBM Product Security Incident Response Blog

Acknowledgement

None

Change History

29-February-2016 - Original version 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.

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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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
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===========================================================================
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