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» ESB-2011.0034 - [Win][UNIX/Linux] Shibboleth IdP 2.X...
ESB-2011.0034 - [Win][UNIX/Linux] Shibboleth IdP 2.X: Access privileged data - Existing account
13 January 2011
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.0034 Shibboleth IdP 2.X Single TransientID Mapped to Multiple Principals 13 January 2011 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Shibboleth IdP 2.X Publisher: The Shibboleth Team Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Access Privileged Data -- Existing Account Resolution: Patch/Upgrade Original Bulletin: http://shibboleth.internet2.edu/secadv/secadv_20110113.txt - --------------------------BEGIN INCLUDED TEXT-------------------- Shibboleth IdP 2.X Single TransientID Mapped to Multiple Principals ==================================================================== All current versions of the Shibboleth 2 IdP are vulnerable to a bug where, under certain situations, more than one user may be given the same transient ID. This in turn may lead to attribute queries for each user mapped to the same ID returning the attributes for user most recently mapped. Affected Systems =========== All current versions of the Shibboleth 2 IdP that have disabled session IP address checking (which is on by default) and have users whose traffic goes through a proxy that changes their IP address after authentication but before the SAML response is sent back to the SP. Deployments using the default value for the ensureConsistentClientAddress setting in the IdPSessionFilter declared in the IdP's web.xml are *not* affected. Addressing the Issue =========== Re-enable Session IP address checking. This may cause intermittent issues with some users (if their IP address changes at the moment described above) but is the only way to address the issue for current systems. Shibboleth IdP 2.2.1 contains a fix for this issue that does not require re-enabling Session IP address checking. Credits =========== Robert Egglestone, Univ. of Auckland http://shibboleth.internet2.edu/secadv/secadv_20110113.txt - -- Chad La Joie http://itumi.biz trusted identities, delivered - --------------------------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. If you do not know who that is, please send an email to firstname.lastname@example.org and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: email@example.com Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iD4DBQFNLm8z/iFOrG6YcBERAkyuAJd17a6YBfmenZDs4AdLaRaxi0YHAJ93lOhE frFX/ApMwy1CJNcjQL39Ew== =0B4C -----END PGP SIGNATURE-----
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