USN-5886-1: Intel Microcode vulnerabilities
27 February 2023
Several security issues were fixed in Intel Microcode.
Releases
Packages
- intel-microcode - Processor microcode for Intel CPUs
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)
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
-
intel-microcode
-
3.20230214.0ubuntu0.16.04.1+esm1
Available with Ubuntu Pro
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.