USN-5886-1: Intel Microcode vulnerabilities

27 February 2023

Several security issues were fixed in Intel Microcode.

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Releases

Packages

Details

Erik C. Bjorge discovered that some Intel(R) Atom and Intel Xeon Scalable
Processors did not properly implement access controls for out-of-band
management. This may allow a privileged network-adjacent user to potentially
escalate privileges. (CVE-2022-21216)

Cfir Cohen, Erdem Aktas, Felix Wilhelm, James Forshaw, Josh Eads, Nagaraju
Kodalapura Nagabhushana Rao, Przemyslaw Duda, Liron Shacham and Ron Anderson
discovered that some Intel(R) Xeon(R) Processors used incorrect default
permissions in some memory controller configurations when using Intel(R)
Software Guard Extensions. This may allow a privileged local user to potentially
escalate privileges. (CVE-2022-33196)

It was discovered that some 3rd Generation Intel(R) Xeon(R) Scalable Processors
did not properly calculate microkey keying. This may allow a privileged local
user to potentially disclose information. (CVE-2022-33972)

Joseph Nuzman discovered that some Intel(R) Processors when using Intel(R)
Software Guard Extensions did not properly isolate shared resources. This may
allow a privileged local user to potentially disclose
information. (CVE-2022-38090)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 22.10
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to reboot your computer to make
all the necessary changes.