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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1746 QEMU update 13 June 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: qemu Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Access Privileged Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-3639 Reference: ASB-2018.0121 ESB-2018.1613 ESB-2018.1545 ESB-2018.1548.5 Original Bulletin: http://www.ubuntu.com/usn/usn-3679-1 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3679-1 June 12, 2018 qemu update ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 18.04 LTS - - Ubuntu 17.10 - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: Side channel execution mitigations were added to QEMU. Software Description: - - qemu: Machine emulator and virtualizer Details: Ken Johnson and Jann Horn independently discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via sidechannel attacks. An attacker in the guest could use this to expose sensitive guest information, including kernel memory. This update allows QEMU to expose new CPU features added by AMD microcode updates to guests on amd64 and i386. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: qemu 1:2.11+dfsg-1ubuntu7.3 qemu-system 1:2.11+dfsg-1ubuntu7.3 qemu-system-x86 1:2.11+dfsg-1ubuntu7.3 Ubuntu 17.10: qemu 1:2.10+dfsg-0ubuntu3.8 qemu-system 1:2.10+dfsg-0ubuntu3.8 qemu-system-x86 1:2.10+dfsg-0ubuntu3.8 Ubuntu 16.04 LTS: qemu 1:2.5+dfsg-5ubuntu10.30 qemu-system 1:2.5+dfsg-5ubuntu10.30 qemu-system-x86 1:2.5+dfsg-5ubuntu10.30 Ubuntu 14.04 LTS: qemu 2.0.0+dfsg-2ubuntu1.43 qemu-system 2.0.0+dfsg-2ubuntu1.43 qemu-system-x86 2.0.0+dfsg-2ubuntu1.43 After a standard system update you need to restart all QEMU virtual machines to make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3679-1 CVE-2018-3639 Package Information: https://launchpad.net/ubuntu/+source/qemu/1:2.11+dfsg-1ubuntu7.3 https://launchpad.net/ubuntu/+source/qemu/1:2.10+dfsg-0ubuntu3.8 https://launchpad.net/ubuntu/+source/qemu/1:2.5+dfsg-5ubuntu10.30 https://launchpad.net/ubuntu/+source/qemu/2.0.0+dfsg-2ubuntu1.43 - --------------------------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 iQIVAwUBWyCGOGaOgq3Tt24GAQitBA/9F5p3qRme01sFhKT6e6u66HWO0Mhi3edu AkqvHq1Udp8La3JoSkdZ+AJWHCnv9NLOCXI6sV5Ycrfu7zg5/EjyDAjgsBFzMEjt DwDbpoW4y6+TZgb14CIoOUsSfuW7dAW2onJdvD1TM3Y+x0TckB0xeJd3VOUjtTMh wIZkgWcqOKgI8g7mAvlu4tukIU0IG4FLXdt3b1UtCfZpbbB5xBX1t6mf8nhW0f+S 5h1Lbuq5/HkMuehYN1pgPqP+aqtygFd3h99Uk85i7CIJRZTcnIZFHs8Ic4dDoPt7 FJTj2wigz6Rus9nOdVbHpT9cW0wEXI1PZPNH/7T3KZeP9SzXI5yRUz0bn0Mz6LBY EPiOdbGSCOJVmtfDV++mDmZnwInlm6GQjBZZIq6ZjXAtPcq/DbFIeOuR5l/KPuit XFFXhEA23z1Tj0nB9Tv4ggSGPw3mC0lg7+joQt1q/Ingwd/mGrjC89TwIm1i51V7 +PQ1OOa3RjjdmB/2JJRNV/sacGjyeMMHl2/fskPKaKkqqwGvEDGIvz4+LUtWZCbN j4x8fpYLrIxzb3GAw5RN00mE4AzuVOyd31zbzvyTC8iex+y+H6zQPekTbYJIQKS1 LGPKHDcZqzYSTHJDgrPIL6uinyZ9oVvW/l+sPnjaJxwGh8jhdIdtT5eENBN77dIJ nJxKaphSu3k= =Rnod -----END PGP SIGNATURE-----