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AUSCERT External Security Bulletin Redistribution
Security Bulletin: IBM Tivoli Federated Identity Manager can be affected by
a vulnerability in IBM Java Runtime Environment (CVE-2012-5081)
9 January 2013
AusCERT Security Bulletin Summary
Product: IBM Tivoli Federated Identity Manager
Operating System: AIX
Impact/Access: Reduced Security -- Remote/Unauthenticated
CVE Names: CVE-2012-5081
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Security Bulletin: IBM Tivoli Federated Identity Manager can be affected by a
vulnerability in IBM Java Runtime Environment (CVE-2012-5081)
Tivoli Federated Identity Manager
6.0, 6.1, 6.1.1, 6.2, 6.2.1, 6.2.2
AIX, HP-UX, Linux, Solaris, Windows, z/OS
The implementation of TLS in the IBM Java JDK may not check the TLS vector
length as set out in the Internet Engineering Task Force Request For Comments
(RFC) 5246. The fix enhances the checking for the vector length.
DESCRIPTION: The JDK's TLS implementation may not check the TLS vector length
as set out in the latest RFC 5246. This issue is exploitable on server
deployments that use JSSE.
Under certain conditions, IBM Tivoli Federated Identity Manager uses Java
Secure Socket Extensions (JSSE) to establish a Secure Socket Layer (SSL)
connection. The vulnerability could occur when the SSL connection is enabled.
The only solution is to upgrade the JDK.
The attack does not require local network access nor does it require
authentication, but some degree of specialized knowledge and techniques are
required. An exploit would not impact the confidentiality of information or
the integrity of data, but the availability of the system could be
CVSS Base Score: 5
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/79435 for the
current score CVSS
Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)
AFFECTED PRODUCTS AND VERSIONS:
Tivoli Federated Identity Manager versions 6.0, 6.1.0, 6.1.1, 6.2.0, 6.2.1,
6.2.2 Tivoli Federated Identity Manager Business Gateway versions 6.1.1,
6.2.0, 6.2.1, 6.2.2
REMEDIATION: The remediation depends on the version of WebSphere you are
using. There are two alternatives.
Alternative 1) If you are using the eWAS bundled with Tivoli Federated
Identity Manager (this was only avaliable for FIM versions 6.1.1 or higher),
you will need to apply the patch for IBM Java 5 SR 15. This is available at
the following link: http://www-01.ibm.com/support/docview.wss?uid=swg24033932
Alternative 2) If you are using a separate WebSphere installation instead of
the eWAS bundled with Tivoli Federated Identity Manager, please see the
following advisory to determine how to patch your WebSphere version:
Complete CVSS Guide On-line Calculator V2 CVE-2012-5081
RELATED INFORMATION: IBM Secure Engineering Web Portal
*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.
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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