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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.0986 Remote packet Denial of Service against named(8) servers 29 September 2011 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: bind Publisher: FreeBSD Operating System: FreeBSD Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2011-2464 Reference: ASB-2011.0061 ESB-2011.0694 Original Bulletin: ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-11:03.bind.asc - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-11:03.bind Security Advisory The FreeBSD Project Topic: Remote packet Denial of Service against named(8) servers Category: contrib Module: bind Announced: 2011-09-28 Credits: Roy Arends Affects: 8.2-STABLE after 2011-05-28 and prior to the correction date Corrected: 2011-07-06 00:50:54 UTC (RELENG_8, 8.2-STABLE) CVE Name: CVE-2011-2464 Note: This advisory concerns a vulnerability which existed only in the FreeBSD 8-STABLE branch and was fixed over two months prior to the date of this advisory. For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit <URL:http://security.FreeBSD.org/>. I. Background BIND 9 is an implementation of the Domain Name System (DNS) protocols. The named(8) daemon is an Internet Domain Name Server. II. Problem Description A logic error in the BIND code causes the BIND daemon to accept bogus data, which could cause the daemon to crash. III. Impact An attacker able to send traffic to the BIND daemon can cause it to crash, resulting in a denial of service. IV. Workaround No workaround is available, but systems not running the BIND name server are not affected. V. Solution Upgrade your vulnerable system to 8-STABLE dated after the correction date. VI. Correction details The following list contains the revision numbers of each file that was corrected in FreeBSD. CVS: Branch Revision Path - - ------------------------------------------------------------------------- RELENG_8 src/contrib/bind9/lib/dns/message.c 1.3.2.3 - - ------------------------------------------------------------------------- Subversion: Branch/path Revision - - ------------------------------------------------------------------------- stable/8/ r223815 - - ------------------------------------------------------------------------- VII. References http://www.isc.org/software/bind/advisories/cve-2011-2464 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2464 The latest revision of this advisory is available at http://security.FreeBSD.org/advisories/FreeBSD-SA-11:03.bind.asc - -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) iEYEARECAAYFAk6C4CYACgkQFdaIBMps37LwQgCeIDVGsCWOLoVdmWogOOaPC1UG 9G8AoJPlRbNmkEWMg7uoOYrvjWlRRdlK =aUvD - -----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. 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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 iQIVAwUBToPvDe4yVqjM2NGpAQKQbhAAsiuFvIfCg+yhIZUgc28RSwYw3yGWMv1e 8UqHY5/ga+DYeL1B0nTmggELt1dC3gDheE4FEcaedCeWvMyj0ezenP3KBXqLXfwL /Paha4/h5ncqBjqeqE+/OcpYSczDJaeNV2kENYlLE5CLFeMEMQNno4VR11Q9NO9W N6yzBqR8aynEcdLOESSNCtoc779NZ21RVu0rVjoFjtK/7wAJyGRlf0A77mETtBMt rx9N8bdM43ot++st+yMf/5bOHSSpFhgscPjXFqcXhrM7v+b2cKWJwiB9qtGP8un+ DiRaAYw90ah50wNNb3UFD/oTdXrUM67VeUS7LekrUzuiD4tXZhUK6sITMwAseRwy Z0MErXbhIOrVb9EQu2iOx4NTKU8BhugCVjT0fkM3ZrRh/OoYsBQchoape0hA2WIO yrZQrjrwzbZ92gQ1tnhHgO57RPI/eVI1huLHtZpm0dZ56X3NtoZqVaToIzgHP4/W YG3nFlRnSHAiQOlHlIuWwxUCbxWURrF5ComUf26PPgrS9dis4Kr4jaEN7U7xVxEY 5U8Y2S68sNJpT7vNa6Uzj+5Jgf1IC4u1dqZBTdmAVSr/9Q2f1vmTZ9KzXhKpVvNr uQvKp/OBFZNKJwBW/uynkkClkgpwhYc/3WIIZiDVSsZKyZTztdqll1Vy8x1KNgmZ fNa+E9rCXIU= =yOAf -----END PGP SIGNATURE-----