03 September 2019
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.3336 USN-3934-2: PolicyKit vulnerability 3 September 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: PolicyKit Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Unauthorised Access -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-6133 Reference: ESB-2019.2854 ESB-2019.1388 ESB-2019.1135 ESB-2019.0856 ESB-2019.2897.2 Original Bulletin: https://usn.ubuntu.com/3934-2/ - --------------------------BEGIN INCLUDED TEXT-------------------- USN-3934-2: PolicyKit vulnerability 2 September 2019 policykit-1 vulnerability A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 12.04 ESM Summary PolicyKit could allow unintended access. Software Description o policykit-1 - framework for managing administrative policies and privileges Details USN-3934-1 fixed a vulnerability in Policykit. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details: It was discovered that PolicyKit incorrectly relied on the fork() system call in the Linux kernel being atomic. A local attacker could possibly use this issue to gain access to services that have cached authorizations. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM libpolkit-backend-1-0 - 0.104-1ubuntu1.5 policykit-1 - 0.104-1ubuntu1.5 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades . After a standard system update you need to reboot your computer to make all the necessary changes. References o USN-3934-1 o CVE-2019-6133 - --------------------------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 email@example.com 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: firstname.lastname@example.org 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 iQIVAwUBXW3JpmaOgq3Tt24GAQiuEg/+J/nG8VtkVizqpIDTz/1Eh/Z+LUgd8P8D eWlaAkwoZoeFATgAdzHYi49MkOnAM3cXaMLMusAmprkfgBNHen3zFPqXzRU6WU/n AOGKHjBmsF0DzSjjQl2BC20Q4GHAwfn5W2pib48tF834jsaoWykEacjviIp8HmS/ a1PQot/Dr4IhGe7Nf6L5SziK/XlvtJKbKThlkpRD/F8YQ+s2vLyd/cFRgEoGrQSw qkKuDpHxsP2MkX82rK1lWTaQaEsvDwxBwyuNC8CRBWPbIdt1xoZjSzwFx7NtCRjd qzGOBVvd+wxTW//jsNGmYFJR3gTSZAJOUryhtAK0JcTxC9nRFa9gvyHNdOHaKPRi yQtIhiIyn7d6T68d2tqrMesrLmXGmyHTPdtlOcZimOxcNsZ/8He1vSROLUpJDBI+ XsCqIKO7gOSKkL/HFn+idlAFoqfF0N8kLyiWfmbIogynihfWhh/onz/cZ/eBKYiq rhbhKlmOAShox2KTFxv8dcNNG0jmdfPth8uB1Mdh0zUEnNQG+tQdbAg4oZEVnUYU 59i0l7pRpggE0rNdryYnMQJOkIcbGstmPF8XAGFW6Hh2/QdtA5K9TjaHSNWdGNqH 2qGKtk70G3bYYoNJNlrfhOVkpKr+/o/pgLramf1MHvkXrufB5ZSqvoFZEvkyk2i5 cfWFQnslobo= =PzzH -----END PGP SIGNATURE-----