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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== 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-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBUPzJBe4yVqjM2NGpAQLE6w/+IJCn+mgWYtmDvexNmF5Q0PJHpSTnnQ9r xVwK1ir2TQhtkPHZ/+7HisiCI46Q5wRT5k/kx9YGs0/Y9kbEREqQXgRTNxyhncQy O9yuezI2/EzCErFzswCk5ETopzZBx9Sr+TnbtAmaATJes3VRUUv/wX4IcOacnEPE 62nDhWbED408tlLPvx/0WYJhCIX37WC5p3BNM0qOWTMRvFWQVfpIKu+3tr7nghxx lTFz1R1aJsFXkGP88ueftPav4FgDLWTxWuq8XRT3RecxcNQIh20fi9egxqEWhpt3 NGbhxt+WRrdIQL8qJE19FBIfxzLo+CjS47Ylr6F5+nH5pFD8M7nccToN7RljVwxo iCGx7aEd+0MqXddQP3hdHjYqLjjtapydXMFJRuOjAM1puk2jEgOZuLezoh2s7MuD 456i3o4BIDxNUq1RnatnPzoA3Nm++q1dibV1WggqGPZdjy4fiQ1PwbPTYJC8RURL v9aegj5v9i9TJH7/UTngIE56q4CVYxMM1diM7WbyZu+KgODrCKWpiOHJ9cM6bXXI qlStYr6IWW1RPHW56iW+3Y+a52sLnKbkw2btX4VIaXyVNph9m7+v/oqhgJSbSX7d Q+Rg5SVWN8JwlNtkhZwbWWNFjzaEgwGIaMN7wTIO2pXX+cs+xNHy+Dg01jqOn6SS ju4y82CKkmU= =6/G9 -----END PGP SIGNATURE-----