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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0230 Shibboleth Security Advisory [ 27 February 2012 ] 29 February 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Shibboleth Publisher: Shibboleth Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Provide Misleading Information -- Remote/Unauthenticated Resolution: Patch/Upgrade Original Bulletin: http://shibboleth.internet2.edu/secadv/secadv_20120227.txt - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Shibboleth Security Advisory [ 27 February 2012 ] Identity Provider LDAPS Connections Do Not Perform Hostname Verification ================= The LDAP support shipped with the Sun/Oracle and OpenJDK JVMs does not perform hostname verification when using LDAPS (see [1] for why). The lack of hostname verification means that while the connection between the IdP and LDAP server is encrypted, the IdP has no way to verify it's actually communicating with the appropriate LDAP server. Also, note all other LDAP libraries that we looked at (Apache Directory, JLDAP, UnboundID, and Netscape LDAP) also exhibit the same behavior so you may want to check any other applications you have that use LDAPS. Affected Versions ================= All 1.x and 2.x versions of the Identity Provider Recommendations ================= Use startTLS, if your directory supports it, or upgrade to IdP v 2.3.6. Credits ================= Scott Cantor, The Ohio State University URL for this Security Advisory http://shibboleth.internet2.edu/secadv/secadv_20120227.txt [1] The stated reason for this is that since LDAPS is not officially defined (it was just made up by the OpenLDAP team) there is no specification that says this check is required. The use of the startTLS operation, which is formally defined, does properly perform hostname verification. - - -- Chad La Joie www.itumi.biz trusted identities, delivered - -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBAgAGBQJPS2+eAAoJEKCzywnSs3NTzi4P/idl9fpMucCFT4AlVVR7Wbxh xV4ihGDHMOetxUkxZfm4Mhkrgywn7fFxLHwv3Dq9z2xpKqi155v3Mjv6D/DKzQoK kTfv4ZVsuOneonxY1InfuKcbTwZUgKX4LSuaQYB1JcZG9JU1e+g1JKkWt8j+sRf5 5ma361AigNNv/SDiBrVVsDM7Afmp9BouD2sAxQsNoy9w0h+VFdtWliP6R/lNr5bz PRrc1BYWaPK+4auQhITX6yQO8a9Lv+NBHMKrgwqws0W7yBDbpbpUY8OBvGNCjqG6 ex1JhzqOylc/OH4Yr7edObzf2TGwdsmZZ25vx6b/+mMJDtMCMkCo+bhEnfpKqEwA IQlEyUFvM/3aLGsfIqvVaGPidmOQqWv1kC/rVcY9Y9c4YCNDK1gqudDqCjvshCIQ XgpHwlW4lCJc6HuQhsm7h6vCeW2tDYNzbqNNMQ/0yi/ovEGcRgl4Lu3r/P4+hWKa FCVg363YSpNSCDJ9acXW3ufxo3fI5NDi5JGIIM4lvkCYrdVGW1hkMeNGnPRNTqex Zp6V4r4Zj/s3wKo+8C0k48p6ls31vd6NIC7+B8v5GFwwya8UTAyDDouEHtgzxeCf 55SzZ2CUp4sMvppmRrRI5sbfGvh9be9VXAvHDxYVQLxo8UsJ5g9Dx0A97g4o32dD IMCUlr3NptbhkCtGXpFe =v01l - -----END PGP SIGNATURE----- - --------------------------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 auscert@auscert.org.au 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: auscert@auscert.org.au 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 iQIVAwUBT03ALu4yVqjM2NGpAQLdKRAAkCbHaWtgRHUrLrZxW59boOxOAu0l4T6D JU/cIueSPOyX43LfNmGyaevyNBBNukIqEGi6rYfaF6dtIgpR1I0qudpAcWNJp9XW zRA17KzzEwuZed5Mcl07yQXI2tmrvVeFyI5h8urH0O41/Wz41n3NRnz+mHhlTVjC 7OyW6+7eFB6HRozPb763DD6Y34zXNDILZ1EK87rIdTwuAr7fLTsRcaoswFfAIGdj 4u0pqwXGMQyOcT1EH8ViqtFA/Ps0YaGpDi7XK9HcpHi7artQU4s6GogxoqxYPTvB Sx9l/jmadcYZvtWr/R6Lg1g7cBZb8DyGggxujRletp4Vz4/CjyPI64wWLFVnOWOZ Iw14vB66z/9lOn9VkZni+jSxUSAvZuib6Z3pTZqFSC9Sc/9O1p8RvwT7Y+cH/RPm 2tcKJV+BYY5uPzAG5NtPVYMiAnONZsNGAxG8f9lsxehfyqc8AIo5p4jlOTsOtIYF 5SUAiOcsi8swtJ1CuAR4XZ3MJZn86RHJzjSBWwXIViDurvhfJsmZMLYeJMcj/7H/ ehrBXtUjLvE+s8U6T7YzT2OB4y1o2k2Un5ZoYqFCp7MSByYup9zGHn0BQ5kRTX3y VM/BS/W5ul5z1qHYVtX3SMWcOwDew4j771sXxWBjnyU6nG+RyQGHKeN8wSSgnGu5 zlmN6q66Zrg= =HFb9 -----END PGP SIGNATURE-----