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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.1664 USN-4628-3: Intel Microcode vulnerabilities 18 May 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Intel Microcode Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2020-8698 CVE-2020-8696 CVE-2020-8695 Reference: ESB-2021.0423 Original Bulletin: https://ubuntu.com/security/notices/USN-4628-3 - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4628-3: Intel Microcode vulnerabilities 17 May 2021 Several security issues were fixed in Intel Microcode. Releases o Ubuntu 21.04 o Ubuntu 20.10 o Ubuntu 20.04 LTS o Ubuntu 18.04 LTS Packages o intel-microcode - Processor microcode for Intel CPUs Details USN-4628-1 provided updated Intel Processor Microcode for various processor types. This update provides the corresponding updates for some additional processor types. Original advisory details: Moritz Lipp, Michael Schwarz, Andreas Kogler, David Oswald, Catherine Easdon, Claudio Canella, and Daniel Gruss discovered that the Intel Running Average Power Limit (RAPL) feature of some Intel processors allowed a side- channel attack based on power consumption measurements. A local attacker could possibly use this to expose sensitive information. ( CVE-2020-8695 ) Ezra Caltum, Joseph Nuzman, Nir Shildan and Ofir Joseff discovered that some Intel(R) Processors did not properly remove sensitive information before storage or transfer in some situations. A local attacker could possibly use this to expose sensitive information. ( CVE-2020-8696 ) Ezra Caltum, Joseph Nuzman, Nir Shildan and Ofir Joseff discovered that some Intel(R) Processors did not properly isolate shared resources in some situations. A local attacker could possibly use this to expose sensitive information. ( CVE-2020-8698 ) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04 o intel-microcode - 3.20210216.0ubuntu0.21.04.1 Ubuntu 20.10 o intel-microcode - 3.20210216.0ubuntu0.20.10.1 Ubuntu 20.04 o intel-microcode - 3.20210216.0ubuntu0.20.04.1 Ubuntu 18.04 o intel-microcode - 3.20210216.0ubuntu0.18.04.1 After a standard system update you need to reboot your computer to make all the necessary changes. References o CVE-2020-8698 o CVE-2020-8696 o CVE-2020-8695 Related notices o USN-4628-1 : intel-microcode - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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