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             AUSCERT External Security Bulletin Redistribution

                               ESB-2013.0089
          Two vulnerabilities have been identified in IBM Tivoli
                        Federated Identity Manager
                              21 January 2013

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

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

Product:           IBM Tivoli Federated Identity Manager
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   Linux variants
                   Solaris
                   Windows
                   z/OS
Impact/Access:     Provide Misleading Information -- Remote/Unauthenticated
                   Unauthorised Access            -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2012-6359  

Original Bulletin: 
   http://www-01.ibm.com/support/docview.wss?uid=swg21615748
   http://www-01.ibm.com/support/docview.wss?uid=swg21615744

Comment: This bulletin contains two (2) IBM security advisories.

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

Security Bulletin: IBM Tivoli Federated Identity Manager Business Gateway 
OpenID: signature validation not applied to all attributes (CVE-2012-6359)

Flash (Alert)

Document information

Tivoli Federated Identity Manager Business Gateway

Software version:
6.2, 6.2.1, 6.2.2

Operating system(s):
AIX, HP-UX, Linux, Solaris, Windows, z/OS

Reference #:
1615748

Modified date:
2013-01-09

Abstract

SUMMARY

An OpenID message can be modified to contain unsigned attributes that will be 
accepted by a relying party because Tivoli Federated Identity Manager Business 
Gateway (TFIMBG) does not check that all attributes have been signed.

Content

VULNERABILITY DETAILS

CVE: CVE-2012-6359

DESCRIPTION:
An OpenID identity provider can send attributes about a user to a relying party 
via the "simple registration extension" (SREG) or "attribute exchange 
extension" (AX). The response from the OpenID provider to the relying party is 
transmitted via a browser redirect. The response also contains an attribute
called "openid.signed" which outlines which parameters in the response are 
signed by the OpenID provider.

When TFIMBG receives an OpenID attribute via SREG or AX it does not check to 
determine if the attribute is signed. It could therefore be possible for an 
attacker either acting as a man-in-the-middle or at the browser to insert 
unsigned attributes which were not sent by the OpenID provider and have the 
relying party accept them. The attack does not require local network access nor 
does it require authentication, but specialized knowledge and techniques are 
required. An exploit will not impact accessibility of system resources or the 
confidentiality of information, but the integrity of some of the data used in 
the OpenID exchange could be compromised. The consequence of this compromise is 
dependent on the nature and use of the OpenID attributes by the consuming 
applications.

CVSS Base Score:4.3
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N)
CVSS Details: http://xforce.iss.net/xforce/xfdb/77790

AFFECTED PLATFORMS
* Tivoli Federated Identity Manager Business Gateway versions 6.2.0, 6.2.1, 
6.2.2

REMEDIATION:

Vendor Fixes: Patches and installation instructions are provided at the URLs 
listed below.

Fix			Build		APAR	Download URL
6.2.0-TIV-TFIMBG-IF0011	6.2.0.11	IV23453	http://www-01.ibm.com/support/docview.wss?uid=swg24032934
6.2.1-TIV-TFIMBG-IF0003	6.2.1.3		IV23452	http://www-01.ibm.com/support/docview.wss?uid=swg24032936
6.2.2-TIV-TFIM-FP0002	6.2.2.2		IV23451	http://www-01.ibm.com/support/docview.wss?uid=swg24032786
			
WORKAROUNDS:
None

RELATED INFORMATION:

* Complete CVSS Guide
* 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 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.

- ------------------------------------------------------------------------------

Security Bulletin: IBM Tivoli Federated Identity Manager OpenID: signature 
validation not applied to all attributes (CVE-2012-6359)

Flash (Alert)

Document information

Tivoli Federated Identity Manager

Software version:
6.2, 6.2.1, 6.2.2

Operating system(s):
AIX, HP-UX, Linux, Solaris, Windows, z/OS

Reference #:
1615744

Modified date:
2013-01-10

Abstract

SUMMARY
An OpenID message can be modified to contain unsigned attributes that will 
be accepted by a relying party because Tivoli Federated Identity Manager 
(TFIM) does not check that all attributes have been signed.

Content

VULNERABILITY DETAILS

CVE: CVE-2012-6359

DESCRIPTION:
An OpenID identity provider can send attributes about a user to a relying 
party via the "simple registration extension" (SREG) or "attribute exchange 
extension" (AX). The response from the OpenID provider to the relying party is 
transmitted via a browser redirect. The response also contains an attribute
called "openid.signed" which outlines which parameters in the response are 
signed by the OpenID provider.

When TFIM receives an OpenID attribute via SREG or AX it does not check to 
determine if the attribute is signed. It could therefore be possible for an 
attacker either acting as a man-in-the-middle or at the browser to insert 
unsigned attributes which were not sent by the OpenID provider and have the 
relying party accept them. The attack does not require local network access 
nor does it require authentication, but specialized knowledge and techniques 
are required. An exploit will not impact accessibility of system resources or 
the confidentiality of information, but the integrity of some of the data used 
in the OpenID exchange could be compromised. The consequence of this 
compromise is dependent on the nature and use of the OpenID attributes by the 
consuming applications.

CVSS Base Score:4.3
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N)
CVSS Details: http://xforce.iss.net/xforce/xfdb/77790

AFFECTED PLATFORMS
* Tivoli Federated Identity Manager versions 6.2.0, 6.2.1, 6.2.2

REMEDIATION:

Vendor Fixes: Patches and installation instructions are provided at the URLs 
listed below.

Fix			Build		APAR	Download URL
6.2.0-TIV-TFIM-IF0011	6.2.0.11	IV23453	http://www-01.ibm.com/support/docview.wss?uid=swg24032920
6.2.1-TIV-TFIM-IF0003	6.2.1.3		IV23452	http://www-01.ibm.com/support/docview.wss?uid=swg24032922
6.2.2-TIV-TFIM-FP0002	6.2.2.2		IV23451	http://www-01.ibm.com/support/docview.wss?uid=swg24032786

WORKAROUNDS:
None

RELATED INFORMATION:

* Complete CVSS Guide
* 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 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.

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

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