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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2013.0460 Asterisk Project Security Advisory - AST-2013-003 2 April 2013 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Asterisk Open Source Certified Asterisk Asterisk Business Edition Asterisk Digiumphones Publisher: Digium Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2013-2264 Original Bulletin: http://downloads.digium.com/pub/security/AST-2013-003.html - --------------------------BEGIN INCLUDED TEXT-------------------- Asterisk Project Security Advisory - AST-2013-003 Product Asterisk Summary Username disclosure in SIP channel driver Nature of Advisory Unauthorized data disclosure Susceptibility Remote Unauthenticated Sessions Severity Moderate Exploits Known No Reported On January 30, 2013 Reported By Walter Doekes, OSSO B.V. Posted On February 21, 2013 Last Updated On March 27, 2013 Advisory Contact Kinsey Moore <kmoore@digium.com> CVE Name CVE-2013-2264 Description When authenticating via SIP with alwaysauthreject enabled, allowguest disabled, and autocreatepeer disabled, Asterisk discloses whether a user exists for INVITE, SUBSCRIBE, and REGISTER transactions in multiple ways. This information was disclosed: * when a "407 Proxy Authentication Required" response was sent instead of "401 Unauthorized" response. * due to the presence or absence of additional tags at the end of "403 Forbidden" such as "(Bad auth)". * when a "401 Unauthorized" response was sent instead of "403 Forbidden" response after a retransmission. * when retransmissions were sent when a matching peer did not exist, but were not when a matching peer did exist. Resolution This issue can only be mitigated by upgrading to versions of Asterisk that contain the patch or applying the patch. Affected Versions Product Release Series Asterisk Open Source 1.8.x All Versions Asterisk Open Source 10.x All Versions Asterisk Open Source 11.x All Versions Certified Asterisk 1.8.15 All Versions Asterisk Business Edition C.3.x All Versions Asterisk Digiumphones 10.x-digiumphones All Versions Corrected In Product Release Asterisk Open Source 1.8.20.2, 10.12.2, 11.2.2 Asterisk Digiumphones 10.12.2-digiumphones Certified Asterisk 1.8.15-cert2 Asterisk Business Edition C.3.8.1 Patches SVN URL Revision http://downloads.asterisk.org/pub/security/AST-2013-003-1.8.diff Asterisk 1.8 http://downloads.asterisk.org/pub/security/AST-2013-003-10.diff Asterisk 10 http://downloads.asterisk.org/pub/security/AST-2013-003-11.diff Asterisk 11 http://downloads.asterisk.org/pub/security/AST-2013-003-1.8.15-cert.diff Certified Asterisk 1.8.15 http://downloads.asterisk.org/pub/security/AST-2013-003-C.3.diff Asterisk BE C.3 Links https://issues.asterisk.org/jira/browse/ASTERISK-21013 Asterisk Project Security Advisories are posted at http://www.asterisk.org/security This document may be superseded by later versions; if so, the latest version will be posted at http://downloads.digium.com/pub/security/AST-2013-003.pdf and http://downloads.digium.com/pub/security/AST-2013-003.html Revision History Date Editor Revisions Made 2013-02-20 Kinsey Moore Initial revision. 2013-02-27 Kinsey Moore Added Asterisk BE patch information. 2013-02-27 Kinsey Moore Corrected open source Asterisk versions. Asterisk Project Security Advisory - AST-2013-003 Copyright (c) 2013 Digium, Inc. All Rights Reserved. Permission is hereby granted to distribute and publish this advisory in its original, unaltered form. - --------------------------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. 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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 iQIVAwUBUVpHRu4yVqjM2NGpAQJ4vA/9HhFpqm3p43ECALkmnHlVn/DaTiRvFyA2 s1uQEQJAarhsoLIjhkX5B4+F6GzgUDE2V37pR1GTEn37Eghlf1RZvRrhjyXF7WNq gQ5QFQxrFzoyfLN2Ic1bOd6PDm48Ao4RRWH2ypkUFt3prikI+qgirKh2h33J6hAu Bd39Nh7XkMt+8xJg/HBrxYOWO+x7Oo5S6T9DGvYNAf3xdABEPBtGKMh8kE7OjsTL 10bLnDmqi8JGTjcrdAoRpGdFJQh5sVRW4nD6CK40ewK5sJXkOs4fZKUzhZ7jY8FJ KZEE98zwOqT7795tJbc7kj6OzUROxBptT4jiuWtv/tBJzTsCsl5jW/+QPqh3hZ01 jE05EokSTaSWUlzzkv8s/qGWZ19YrCSOVGj/z8x7vqZ5HFH4/eoApyhsPALYASZv XcNjsZo8oLpdb5h+kL0qt9OnRLZI/M/hjQYZ/HfQ3WzPv1kf9JOuWWJ+k3s6t4vr GmFZ3CmDnM9fVHk2FW5Ac8hSu7IUUv4G05N7PPbiLImVXkye2U1BSecVHBetRMYJ xHs1UmcpBefELenoXRcu4mXKoSCySNQlIL3FKhTvdnmdIgWRmRhIynTaFQ+p0xJW EyGf9hi9+VmkF/sYFfja3+2VcOkzhDFZ3ACnIU9tVBfOiwh3ckaVP+JIKEdy8FNR Fh+/JQ9jjh4= =t+vH -----END PGP SIGNATURE-----