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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2992 ldns vulnerabilities 23 November 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: ldns Publisher: Ubuntu Operating System: UNIX variants (UNIX, Linux, OSX) Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Access Privileged Data -- Existing Account Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-1000232 CVE-2017-1000231 CVE-2014-3209 Original Bulletin: http://www.ubuntu.com/usn/usn-3491-1 Comment: This advisory references vulnerabilities in products which run on platforms other than Ubuntu. It is recommended that administrators running ldns check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3491-1 November 22, 2017 ldns vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 17.10 - - Ubuntu 17.04 - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: Several security issues were fixed in ldns. Software Description: - - ldns: ldns library for DNS programming Details: Leon Weber discovered that the ldns-keygen tool incorrectly set permissions on private keys. A local attacker could possibly use this issue to obtain generated private keys. This issue only applied to Ubuntu 14.04 LTS. (CVE-2014-3209) Stephan Zeisberg discovered that ldns incorrectly handled memory when processing data. A remote attacker could use this issue to cause ldns to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-1000231, CVE-2017-1000232) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10: libldns2 1.7.0-1ubuntu1.17.10.1 Ubuntu 17.04: libldns2 1.7.0-1ubuntu1.17.04.1 Ubuntu 16.04 LTS: libldns1 1.6.17-8ubuntu0.1 Ubuntu 14.04 LTS: libldns1 1.6.17-1ubuntu0.1 In general, a standard system update will make all the necessary changes. References: https://www.ubuntu.com/usn/usn-3491-1 CVE-2014-3209, CVE-2017-1000231, CVE-2017-1000232 Package Information: https://launchpad.net/ubuntu/+source/ldns/1.7.0-1ubuntu1.17.10.1 https://launchpad.net/ubuntu/+source/ldns/1.7.0-1ubuntu1.17.04.1 https://launchpad.net/ubuntu/+source/ldns/1.6.17-8ubuntu0.1 https://launchpad.net/ubuntu/+source/ldns/1.6.17-1ubuntu0.1 - --------------------------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. 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Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== 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). 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