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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.3773 USN-4149-1: Unbound vulnerability 9 October 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: unbound Publisher: Ubuntu Operating System: Ubuntu UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-16866 Original Bulletin: https://usn.ubuntu.com/4149-1/ Comment: This advisory references vulnerabilities in products which run on platforms other than Ubuntu. It is recommended that administrators running unbound check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4149-1: Unbound vulnerability 8 October 2019 unbound vulnerability A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 19.04 Summary Unbound could be made to crash if it received a specially crafted NOTIFY query. Software Description o unbound - validating, recursive, caching DNS resolver Details It was discovered that Unbound incorrectly handled certain NOTIFY queries. An attacker could possibly use this issue to cause a denial of service. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 19.04 libunbound8 - 1.9.0-2ubuntu0.1 unbound - 1.9.0-2ubuntu0.1 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades . In general, a standard system update will make all the necessary changes. References o CVE-2019-16866 - --------------------------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: 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXZ03NGaOgq3Tt24GAQjM6w//VU6358HbwxpiDKhq2KySG0lsy7UDbOv1 Q2JgD51W92Ji3weS5203BkBanPtd8br1SQ3eM9XIXoOxlmVIRJiyV0UsMGH7xZ4r 9cfyDLPPX/fURyXEzQrq/YI2VZ6GpTo6En2yMEeWdyzsIziumCEnVW3cdLAYSZPV i+DYGFp1GBA9C+GMnk/k7oixOPaUZ/40o0/Jmk0ygPZ2NCItDwB+1q+J+9Zfvq/g USXuOdOTRW/kGDfWViR1agd35F7R8LzPOQS6Q0czHRYUv6aLVluMeVy+UNr+AS4U Y8/yj3+ruTIwLBXYq/8Xw3LLmQZUqre5hLLsB3jT9qwK23u5eNGyUKZpF3Wcki/S yMpUUt+w2G+NZtSfx8oNHtFdNsGXuE3x3vZQnqzpfJyzatMJcx7ls+CGYd0tKOsR OZjpMrttsbRQWHgRzjxM2TqkE3ezzG0lklIYAR7xJRqGzCW5/PCVvmEuzpIVKgAp Gan9y8TVOHrLZ1ciwM8I43HajekwnU1Ji+Bd2JZXD+NF7HiIImrq4P3w5N691kWQ P9F0LuvbxWB3+zwUmCIqL/9ciij+viHNUBGcNvGcegFjFJ+i4iPv8UG8MJSjPzcK PlD3kbSqt+xjq8Nx94QN03/VUBNi08XutWVxIzTDx3fv4KeljVqppAOw16ZDYcVu taIK9tnFtBk= =oCRO -----END PGP SIGNATURE-----