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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0137.3 Intel Microcode update 4 April 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: intel-microcode Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Access Privileged Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-5715 Reference: ASB-2018.0009 ASB-2018.0002.4 ESB-2018.0133 ESB-2018.0118 ESB-2018.0047 ESB-2018.0046 ESB-2018.0044 ESB-2018.0042 Original Bulletin: http://www.ubuntu.com/usn/usn-3531-1 Revision History: April 4 2018: provides the corrected microcode updates January 23 2018: provided the microcode updates required for the corresponding Linux kernel updates January 12 2018: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3531-3 March 29, 2018 intel-microcode update ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 17.10 - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: The system could be made to expose sensitive information. Software Description: - - intel-microcode: Processor microcode for Intel CPUs Details: Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5715) This update provides the corrected microcode updates required for the corresponding Linux kernel updates. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10:  intel-microcode 3.20180312.0~ubuntu17.10.1 Ubuntu 16.04 LTS:  intel-microcode 3.20180312.0~ubuntu16.04.1 Ubuntu 14.04 LTS:  intel-microcode 3.20180312.0~ubuntu14.04.1 After a standard system update you need to reboot your computer to make all the necessary changes. References:  https://usn.ubuntu.com/usn/usn-3531-3  https://usn.ubuntu.com/usn/usn-3531-1  CVE-2017-5715 Package Information:  https://launchpad.net/ubuntu/+source/intel-microcode/3.20180312.0~ubuntu17.10.1  https://launchpad.net/ubuntu/+source/intel-microcode/3.20180312.0~ubuntu16.04.1  https://launchpad.net/ubuntu/+source/intel-microcode/3.20180312.0~ubuntu14.04.1 - --------------------------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. 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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 iQIVAwUBWsQXL4x+lLeg9Ub1AQifZw/9E4j6vR7eAiC1qqlh4+Z1/6C2zXGCMraM nR79vXfDzq3kSl6QLtw/kvqnb8QZpAYvt6uzXoOoQMKt/F4O4nCC3gfhsRhWwaDj B0M+ftOulKHN1s60xsW+9anJk9AFZEbofl1qkKfdXKN1b3i06WlkQqL61/I0I/ef 073VA1wn0x4lSeqaMeOElefiuVEp21pra5BZsqTuaK9O4Fm+Vd1NhIanXFLy2lHZ KYj0wyhT8lqy6ZcT/mnEm0I7ulZm9WUViFWpKhb96SXzL3HSTflLizbW7PWoBDkN vohXzwFGi9R4YCYxJBWO3nPIDU3yh7D59TXNHNuTbk6lN6F0VclupJcgqTK1XkHy SZFIo0HuSYaVI0+XxBvYrTbocqMCMOPdwC89GJBtQGdKEEJd/F7yKzZAF2YG1POD x/HcwYAoOLvsuByTdYNxduByY2SqEVrRglZjPY02ycl3kSsKptCMKOGpU6msh1ff XgM6rbpE0eSsJ3XyQnuFjV1S/H7fEV6GXTPkcRvylDr6sjwhlBxQZgByiYR5PbSm 60vCpcpolB3sSadRuMNwmnayNKXsnNeQDdAOtjqo5ik4Fh1AkPdlG4ayoYP588a9 vCkBSyzmpOchgyaEJrryxKdQQ5PqqYZQJA57B/Jg69fbrtMj26aqgqvAXR5TCIxo Us+ttDHFWDA= =CTT1 -----END PGP SIGNATURE-----