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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.3584 USN-4137-1: Mosquitto vulnerability 24 September 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Mosquitto Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-11779 Original Bulletin: https://usn.ubuntu.com/4137-1/ - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4137-1: Mosquitto vulnerability 23 September 2019 Mosquitto vulnerability A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 19.04 Summary Mosquitto could be made to crash or run programs if it received specially crafted network traffic. Software Description o mosquitto - MQTT version 3. ^ 1 / [ 3 ] .1.1 compatible message broker Details It was discovered that Mosquitto incorrectly handled certain specially crafted input and network packets. A remote attacker could use this 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 libmosquitto1 - 1.5.7-1ubuntu0.1 libmosquittopp1 - 1.5.7-1ubuntu0.1 mosquitto - 1.5.7-1ubuntu0.1 mosquitto-clients - 1.5.7-1ubuntu0.1 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-2019-11779 - --------------------------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 iQIVAwUBXYlRYWaOgq3Tt24GAQjw3Q//fw4XsY/ec9E3UCxvBJWqcgMNAs5FcWyI 420H9hL6BqjcAf5TZV+i1v6Pv57Oe2lMr+eyvc6S/S46lKx/8g4hxH1yK68oGMbo 5+tyO/OS4Mue/Vxu6hymAqwaxxBl7RAp5kR+6vPd6Rb5VTpbw7unGPi7oJa+Gox+ 0rv3SRzKJlG7WdiNoV5WhgRxTTmB/JWkteAA8YfJGSmO5XP9aQQ38t3MYNkEkHsa T+etwd5nkTr3sB3YRfp+h+JpkCrqkFZRw7IwJDqRp2VAfyrrZD0+3rvibuQDpt8j 8WBDa+P7Fdcg8LsYVF/SrrXf36agy70jFMZ02CWSs8b+Ftgkx2hmtRptHImfUjpY 5sICVz53v2aYZK0Zdr359Z9ci5rM6kDv5SNNJutovo4KmWQHXRdZlObwDUSSwiex Fq1PAq8jwIqK067vU6/U+g9vmskEPhlDyN5T+gX5fjNhzvXtvPrpG7uCL7wvEIfz SK86zKI3934r4QGJt1udnU4XpqLCzglEP3Jwk8cL+hVwDV0OPuPCuGGJN5QnCw/Q 2PX56wIoVQAwemmxk+kcNA8+f3xT0m7pZQhGOyiU2YDoojqkOrAj39rJCeX8if28 8YFEev9q0ZRuswVg4B4YhvpGN+tNgovWcAL7mqQKmjiIKGyCR1CQ/RyLYcrM7TwN 4THqLgK0ggo= =+I7p -----END PGP SIGNATURE-----