IBM Security Bulletin: WebSphere Message Broker and IBM Integration Bus are affected by denial of service vulnerability (CVE-2014-8901) - United States WMB IIB 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 [http://cve.mitre.org/cgi-bin/cvename.cgi?name=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 https://exchange.xforce.ibmcloud.com/vulnerabilities/99110 [https://exchange.xforce.ibmcloud.com/vulnerabilities/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 [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 [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 [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 [http://www.ibm.com/support/docview.wss?uid=swg27006308]

WORKAROUNDS AND MITIGATIONS
None known

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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 [http://www.ibm.com/systems/z/solutions/security_subintegrity.html]. 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 [http://www.first.org/cvss/v2/guide] 
On-line Calculator v2 [http://nvd.nist.gov/CVSS-v2-Calculator] 

RELATED INFORMATION
IBM Secure Engineering Web Portal [http://www.ibm.com/security/secure-engineering/bulletins.html] 
IBM Product Security Incident Response Blog [http://www.ibm.com/blogs/psirt] 

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. 

RELATED INFORMATION
 A Japanese translation is available [http://www.ibm.com/support/docview.wss?uid=swg21978064]







Cross reference information Segment Product Component Platform Version Edition Business Integration WebSphere Message Broker 8.0 
PRODUCT ALIAS/SYNONYM
 WMB IIB

Question: Help with Security Bulletin: WMB and IIB are affected by denial of service vulnerability (CVE-2014-8901) I need to understand details regarding Security Bulletin: WebSphere Message Broker and IBM Integration Bus are affected by denial of service vulnerability (CVE-2014-8901). Where can I find this information? 

Answer: CVEID: CVE-2014-8901 [http://cve.mitre.org/cgi-bin/cvename.cgi?name=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 https://exchange.xforce.ibmcloud.com/vulnerabilities/99110 [https://exchange.xforce.ibmcloud.com/vulnerabilities/99110] for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:S/C:N/I:N/A:P)