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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2014.0960 CVE-2014-3859: BIND named can crash due to a defect in EDNS printing processing 12 June 2014 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: BIND Publisher: ISC Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2014-3859 Original Bulletin: https://kb.isc.org/article/AA-01166/74/CVE-2014-3859 - --------------------------BEGIN INCLUDED TEXT-------------------- CVE-2014-3859: BIND named can crash due to a defect in EDNS printing processing Author: Jeremy Reed Reference Number: AA-01166 Views: 129 Created: 2014-05-28 13:28 Last Updated: 2014-06-11 20:45 0 Rating/ Voters A specially crafted query sent to a BIND nameserver can cause it to crash with a REQUIRE assertion error. CVE: CVE-2014-3859 Document Version: 2.0 Posting date: 11 June 2014 Program Impacted: BIND Versions affected: 9.10.0, 9.10.0-P1 Severity: Critical Exploitable: Remotely Description: A query specially crafted to exploit a defect in EDNS option processing can cause named to terminate with an assertion failure. Impact: Both authoritative and recursive servers are vulnerable to this defect. Exploitation of this condition can cause a denial of service in nameservers running affected versions of BIND 9.10. Access Control Lists do not provide protection. The bug which causes this condition is in libdns; consequently in addition to the named server process other applications (for example: dig and delv) built using the libdns library from the affected source distributions can also be forced to crash with assertion failures triggered in the same fashion. CVSS Score: 7.8 CVSS Equation: (AV:N/AC:L/Au:N/C:N/I:N/A:C) For more information on the Common Vulnerability Scoring System and to obtain your specific environmental score please visit: http://nvd.nist.gov/cvss.cfm?calculator&adv&version=2&vector=(AV:N/AC:L/Au:N/C:N/I:N/A:C) Workarounds: No known workarounds at this time. Active exploits: There are no known active exploits. Solution: Upgrade to the patched release most closely related to your current version of BIND. Open source versions can all be downloaded from http://www.isc.org/downloads. BIND 9 version 9.10.0-P2 Acknowledgements: ISC would like to thank Codenomicon for detecting this issue. Document Revision History: 1.0 Phase One, Advance Notification, 04 June 2014 2.0 Phase Four, Public Disclosure, 11 June 2014 Related Documents: See our BIND Security Matrix for a complete listing of Security Vulnerabilities and versions affected. If you'd like more information on our product support or about our Subscription versions of BIND, please visit http://www.dns-co.com/solutions/. Do you still have questions? Questions regarding this advisory should go to security-officer@isc.org. To report a new issue, please encrypt your message using security-officer@isc.org's PGP key which can be found here: https://www.isc.org/downloads/software-support-policy/openpgp-key/. If you are unable to use encrypted email, you may also report new issues at: https://www.isc.org/mission/contact/. Note: ISC patches only currently supported versions although when possible we indicate EOL versions affected. The latest versions of ISC software can always be found on our web site at http://www.isc.org/downloads/. There you will find additional information about each release. ISC Security Vulnerability Disclosure Policy: Details of our current security advisory policy and practice can be found here: ISC Software Defect and Security Vulnerability Disclosure Policy This Knowledge Base article https://kb.isc.org/article/AA-01166 is the complete and official security advisory document. Legal Disclaimer: Internet Systems Consortium (ISC) is providing this notice on an "AS IS" basis. No warranty or guarantee of any kind is expressed in this notice and none should be implied. ISC expressly excludes and disclaims any warranties regarding this notice or materials referred to in this notice, including, without limitation, any implied warranty of merchantability, fitness for a particular purpose, absence of hidden defects, or of non-infringement. Your use or reliance on this notice or materials referred to in this notice is at your own risk. ISC may change this notice at any time. A stand-alone copy or paraphrase of the text of this document that omits the document URL is an uncontrolled copy. Uncontrolled copies may lack important information, be out of date, or contain factual errors. © 2001-2014 Internet Systems Consortium - --------------------------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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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 iQIVAwUBU5ksXRLndAQH1ShLAQLtSw//fzOX8MbP2J0/o6eF6ROyW+uf0Fk6uTtk mEse8zVeeVJ/syUyRmVNvFjuqENPp0fWEe1WVm355BFNjgOHrqHfvGgh1C/TmlSR OSk1HDJ3HkQdbJsY2JZIAFHTb260hYlsoaP7CZG8sFRzuEnF45KAQxceeNkxdYiM xjlhwigvbNSTDqAoTs8Fv4u/DAxCOuijtcRBkWAdz0JJ6XAMJ0U2TWnSf90wVcHO utpbYr6wyFvOGALcTy3unD0P3rORyPkEMJzyJJs3MR59Ha8j2zR5MA1rBCCW2tl/ 20vA9/GLpTMAHmcWActJ6Kca46IUUInqcN7zONcDHKsnoO48ZGqXGa46zLGJ4Sx6 EVuI/XlvtEumuvv8FfpXRCo0jpKb/hQCYkk057k/YciOVmBIL+erNioJ0yNQosZm LUj9jSXzOekoSfF3HPyAJBGsN89J0KDvnLDCeIC+ogA8NLcCu0QJGEQ5TbInCOw8 BivFkd3lKkZ7P9dTowxIPHQDLnfP2gWPRHKsOVjAOMmwma4+BJMArT+MFUF12KNA jOhPgU0QVAq2YT7d2xOg1oDW/2f7h8BYpasbLo639FX0L+9G0pkwXkg893+g7dqV TVRYh2BYa7jn8WkfUyaG31pyamYGGzZ5I+5Hz8WrfVSx4t7p9H/gY/oj5NJ2YZlf jEZrxr9Q/Iw= =4pTL -----END PGP SIGNATURE-----