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CVE-2021-33120

Published: 9 February 2022

Out of bounds read under complex microarchitectural condition in memory subsystem for some Intel Atom(R) Processors may allow authenticated user to potentially enable information disclosure or cause denial of service via network access.

From the Ubuntu Security Team

Brandon Miller discovered that some Intel processors did not properly restrict access in some situations. This may allow a local authenticated user to obtain sensitive information or allow a remote user to cause a denial of service.

Priority

Medium

Cvss 3 Severity Score

5.4

Score breakdown

Status

Package Release Status
intel-microcode
Launchpad, Ubuntu, Debian
jammy
Released (3.20220510.0ubuntu0.22.04.1)
kinetic
Released (3.20220207.1ubuntu1)
trusty Ignored
(early microcode loading not allowed)
xenial
Released (3.20220510.0ubuntu0.16.04.1+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
bionic
Released (3.20220510.0ubuntu0.18.04.1)
focal
Released (3.20220510.0ubuntu0.20.04.1)
impish
Released (3.20220510.0ubuntu0.21.10.1)
upstream
Released (3.20220207.1)

Severity score breakdown

Parameter Value
Base score 5.4
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact Low
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L