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=========================================================================Ubuntu Security Notice USN-4628-1
November 11, 2020

intel-microcode vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in Intel Microcode.

Software Description:
- intel-microcode: Processor microcode for Intel CPUs

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 20.10:
  intel-microcode                 3.20201110.0ubuntu0.20.10.1

Ubuntu 20.04 LTS:
  intel-microcode                 3.20201110.0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
  intel-microcode                 3.20201110.0ubuntu0.18.04.1

Ubuntu 16.04 LTS:
  intel-microcode                 3.20201110.0ubuntu0.16.04.1

Ubuntu 14.04 ESM:
  intel-microcode                 3.20201110.0ubuntu0.14.04.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-4628-1
  CVE-2020-8695, CVE-2020-8696, CVE-2020-8698

Package Information:
  https://launchpad.net/ubuntu/+source/intel-microcode/3.20201110.0ubuntu0.20.10.1
  https://launchpad.net/ubuntu/+source/intel-microcode/3.20201110.0ubuntu0.20.04.1
  https://launchpad.net/ubuntu/+source/intel-microcode/3.20201110.0ubuntu0.18.04.1
  https://launchpad.net/ubuntu/+source/intel-microcode/3.20201110.0ubuntu0.16.04.1

Ubuntu 4628-1: Intel Microcode vulnerabilities

November 11, 2020
Several security issues were fixed in Intel Microcode.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 20.10: intel-microcode 3.20201110.0ubuntu0.20.10.1 Ubuntu 20.04 LTS: intel-microcode 3.20201110.0ubuntu0.20.04.1 Ubuntu 18.04 LTS: intel-microcode 3.20201110.0ubuntu0.18.04.1 Ubuntu 16.04 LTS: intel-microcode 3.20201110.0ubuntu0.16.04.1 Ubuntu 14.04 ESM: intel-microcode 3.20201110.0ubuntu0.14.04.1 After a standard system update you need to reboot your computer to make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4628-1

CVE-2020-8695, CVE-2020-8696, CVE-2020-8698

Severity
November 11, 2020

Package Information

https://launchpad.net/ubuntu/+source/intel-microcode/3.20201110.0ubuntu0.20.10.1 https://launchpad.net/ubuntu/+source/intel-microcode/3.20201110.0ubuntu0.20.04.1 https://launchpad.net/ubuntu/+source/intel-microcode/3.20201110.0ubuntu0.18.04.1 https://launchpad.net/ubuntu/+source/intel-microcode/3.20201110.0ubuntu0.16.04.1

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