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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0543 GDM vulnerability 21 February 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: gdm Publisher: Ubuntu Operating System: Ubuntu Linux variants Impact/Access: Unauthorised Access -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-3825 Original Bulletin: http://www.ubuntu.com/usn/usn-3892-1 Comment: This advisory references vulnerabilities in products which run on platforms other than Ubuntu. It is recommended that administrators running gdm check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3892-1 February 20, 2019 gdm3 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 18.10 - - Ubuntu 18.04 LTS Summary: GDM could give unauthorized access to a different user. Software Description: - - gdm3: GNOME Display Manager Details: Burghard Britzke discovered that GDM incorrectly handled certain configurations. An attacker could possibly use this issue to get unauthorized access to a different user. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10: Â gdm3Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 3.30.1-1ubuntu5.1 Ubuntu 18.04 LTS: Â gdm3Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 3.28.3-0ubuntu18.04.4 After a standard system update you need to reboot your computer to make all the necessary changes. References: Â https://usn.ubuntu.com/usn/usn-3892-1 Â CVE-2019-3825 Package Information: Â https://launchpad.net/ubuntu/+source/gdm3/3.30.1-1ubuntu5.1 Â https://launchpad.net/ubuntu/+source/gdm3/3.28.3-0ubuntu18.04.4 - -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce - --------------------------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 iQIVAwUBXG4Lz2aOgq3Tt24GAQgIMQ//c5IpKLuIySqqt4J6R51qewDFHm/7N3Gf VgmD7YRQhvAwV34Ehv0lwvaISy1aotF/FaLNjwnEJf993Xq/fNWjz+ZjFXqS2H6g J0/v3u9AG9kp2eBrH1NBOipjuNanlCotHmN4iJ0v79IhWR78ulz13xb7CO6zVqBN aMo4KrF7dthEB6JrcgKFCPEZiEdpHF6HIi45MQAjulI2foc/dF1AhJBJ3KOa1Kuw YL3/Rfi3+dYogxPBI1xu806EOI7Q7/WFg/1rFKOiY4ycLw4oUXKE0ZS/aNoUWRxH 9Cyrr7y+91UfnZk46bBg8kSrx/BtGAmlaK5Jr45Whp2ggXPcN6GPgrwQABpmgP9E ucdalsh4sSO3mt5RXXM1wRuLXvJUbJFU1e9yA3aCQlOPjHKluHc17IEEn0i7fIlb tSQyDlSVT/pVN4GGpsz/CfI+5q5seCh7e+bDxSOQMhSQCji5qiH9kmhOJINeGN7I hsVdrbKhiBPQnlwCcz8i+v/L+tYUmRd+sUsMZIZeTRVkJ9fWab+WsYbBrB7p8q9P Djtdb2M1KmB+hBzQ64X0f8NcA6TzfnVAk2NIH7nwjK8xyCgmqjjtUjUV50UT/Q97 vWA4mPwfoLeBqXLe26SBm5/b/vuu4o0iGVvaGjQ5e7AM2+EDfCsvmlIwe/Qk/xqj W/MkY7VE0dw= =XJbr -----END PGP SIGNATURE-----