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AUSCERT External Security Bulletin Redistribution
ESB-2013.1492
IBM WebSphere Message Broker and IBM Integration Bus Security
Vulnerability: XML4J denial of service attack (CVE-2013-5372)
22 October 2013
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AusCERT Security Bulletin Summary
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Product: IBM WebSphere Message Broker
IBM Integration Bus
Publisher: IBM
Operating System: AIX
HP-UX
Linux variants
Solaris
Windows
z/OS
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2013-5372
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21653087
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IBM WebSphere Message Broker and IBM Integration Bus Security Vulnerability:
XML4J denial of service attack (CVE-2013-5372)
Flash (Alert)
Document information
WebSphere Message Broker
Security
Software version:
6.1, 7.0, 8.0
Operating system(s):
AIX, HP-UX on Itanium, Linux, Solaris, Windows, z/OS
Reference #:
1653087
Modified date:
2013-10-17
Abstract
XML4J is vulnerable to a denial of service attack triggered by a specially
crafted XML document
Content
VULNERABILITY DETAILS:
DESCRIPTION:
The XML4J parser shipped with WebSphere Message Broker and IBM Integration Bus
is vulnerable to a denial of service attack, triggered by a specially crafted
XML document. The specially crafted XML document causes the XML parser to run
out of memory when the security feature to control the processing of a
document with a large number of entities that need to be expanded is enabled.
CVEID: CVE-2013-5372
CVSS Base Score: 4.3
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/86662
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P)
AFFECTED PRODUCTS AND VERSIONS:
IBM WebSphere Message Broker V6.1.0.11 with Rules and Formatter Extension
IBM WebSphere Message Broker V6.1.0.11
IBM WebSphere Message Broker for z/OS V6.1.0.11
IBM WebSphere Message Broker V7.0,0.6
IBM WebSphere Message Broker for z/OS V7.0,0.6
IBM WebSphere Message Broker V8.0.0.3
IBM WebSphere Message Broker for z/OS V8.0.0.3
IBM Integration Bus V9.0.0.0
IBM Integration Bus for z/OS V9.0.0.0
REMEDIATION:
For IBM WebSphere Message Broker V6.1 and IBM WebSphere Message Broker for
z/OS V6.1 please apply fix pack V6.1.0.12 which will contain APAR IC96473.
For IBM WebSphere Message Broker V7.0 and IBM WebSphere Message Broker for
z/OS V7.0 please apply fix pack V7.0.0.7 which will contain APAR IC96473.
For IBM WebSphere Message Broker V8.0 and IBM WebSphere Message Broker for
z/OS V8.0 please apply fix pack V8.0.0.4 which will contain APAR IC96473.
For IBM Integration Bus V9.0 and IBM Integration Bus for z/OS V9.0 please
apply fix pack V9.0.0.1 which will contain APAR IC96473.
See http://www.ibm.com/support/docview.wss?uid=swg27006308 for information on
fix pack availability.
Prior to fix pack availability please contact IBM Support and request the fix
for the required APAR.
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.
Workaround(s):
None known, apply fixes
Mitigation(s):
None known
REFERENCES:
Complete CVSS Guide
On-line Calculator V2
CVE-2013-5372
X-Force Vulnerability Database http://xforce.iss.net/xforce/xfdb/86662
RELATED INFORMATION:
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
CHANGE HISTORY
17-Oct-2013: Original Copy 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 Flash.
Note: 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.
Cross reference information
Segment Product Component Platform Version Edition
Business Integration IBM Integration Bus Security AIX, HP-UX, Linux, Solaris, Windows, z/OS 9.0
Copyright and trademark information
IBM, the IBM logo and ibm.com are trademarks of International Business
Machines Corp., registered in many jurisdictions worldwide. Other product and
service names might be trademarks of IBM or other companies. A current list of
IBM trademarks is available on the Web at "Copyright and trademark
information" at www.ibm.com/legal/copytrade.shtml.
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