Date: 21 January 2013
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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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