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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2647 X.Org X server vulnerabilities 19 October 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: xserver-xorg-core Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-12187 CVE-2017-12186 CVE-2017-12185 CVE-2017-12184 CVE-2017-12183 CVE-2017-12182 CVE-2017-12181 CVE-2017-12180 CVE-2017-12179 CVE-2017-12178 CVE-2017-12177 CVE-2017-12176 Reference: ESB-2017.2609 Original Bulletin: http://www.ubuntu.com/usn/usn-3456-1 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3456-1 October 17, 2017 xorg-server, xorg-server-hwe-16.04, xorg-server-lts-xenial vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 17.04 - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: Several security issues were fixed in the X.Org X server. Software Description: - - xorg-server: X.Org X11 server - - xorg-server-hwe-16.04: X.Org X11 server - - xorg-server-lts-xenial: X.Org X11 server Details: It was discovered that the X.Org X server incorrectly handled certain lengths. An attacker able to connect to an X server, either locally or remotely, could use these issues to crash the server, or possibly execute arbitrary code. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.04: xserver-xorg-core 2:1.19.3-1ubuntu1.3 Ubuntu 16.04 LTS: xserver-xorg-core 2:1.18.4-0ubuntu0.7 xserver-xorg-core-hwe-16.04 2:1.19.3-1ubuntu1~16.04.4 Ubuntu 14.04 LTS: xserver-xorg-core 2:1.15.1-0ubuntu2.11 xserver-xorg-core-lts-xenial 2:1.18.3-1ubuntu2.3~trusty4 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://www.ubuntu.com/usn/usn-3456-1 CVE-2017-12176, CVE-2017-12177, CVE-2017-12178, CVE-2017-12179, CVE-2017-12180, CVE-2017-12181, CVE-2017-12182, CVE-2017-12183, CVE-2017-12184, CVE-2017-12185, CVE-2017-12186, CVE-2017-12187 Package Information: https://launchpad.net/ubuntu/+source/xorg-server/2:1.19.3-1ubuntu1.3 https://launchpad.net/ubuntu/+source/xorg-server/2:1.18.4-0ubuntu0.7 https://launchpad.net/ubuntu/+source/xorg-server-hwe-16.04/2:1.19.3-1ubuntu1~16.04.4 https://launchpad.net/ubuntu/+source/xorg-server/2:1.15.1-0ubuntu2.11 https://launchpad.net/ubuntu/+source/xorg-server-lts-xenial/2:1.18.3-1ubuntu2.3~trusty4 - --------------------------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 iQIVAwUBWegpz4x+lLeg9Ub1AQje5w/+JUQxvxVxnfd/zB4TMCs2+qIunllIZPr9 nzXxlbNk08F1fYPNxMlMvlSCJhJ5OuYzJEG/NN3iLgs0yGzLqBVHiPi84vY5GSk2 GLTgTkhqz67ICEkxHe0uLtNNtUcG7MevDzrCVeMjBP9i4hKId3W01H2hz+WZbUz6 Vx0ROu7rBwH2GZpeIrS6rf9GaarYlLEdhjmX0RP54FfzEW4WoOia69sJBh4bkvYy zKPgkjwSnW5NpqJpPt8zmNfRNVFObi8NtIUEJbmaY8mtTo0OgRev/Yo4ScFL+WWm tdDTXWVBqj1R2E7BL9iHvO3vJ2ucChmwJicIT9ZxjqwFCNlujY2ya7feKymKOna4 kX10FT/Y0HhgKdUCJuW6RhXZhmth55blqi5rns++y5p7KF9ADuC+3Be6kjdA/9K4 My9nDwCWH8EqPHyF3wgFr3WDvuWfjilxfF049li6Idv1ePJOddxT4WbArDYGPLv2 ijLqZwlui9WccMVOLwECpmD0CSecUYVwPpvFjBmSOOzKsY/Cy2S4C+xJps9NGyT5 pyNXBf2R5vmL+9o4mpt7qUJH257IsFEazqItUu1oSJrW8LJJzH/t0bcO96OAbZ1K bD1A/mKU/5vExM0gB45EIIUAk4VPmdM4qB3Ys7IqgVvPO0BSy9G6uGu58SP5nxh8 e8RxSDj+Bd0= =RZmr -----END PGP SIGNATURE-----