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CVE-2023-39368

Published: 12 March 2024

Protection mechanism failure of bus lock regulator for some Intel(R) Processors may allow an unauthenticated user to potentially enable denial of service via network access.

From the Ubuntu Security Team

It was discovered that some IntelĀ® Processors did not properly enforce bus lock regulator protections. A remote attacker could use this to cause a denial of service.

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
intel-microcode
Launchpad, Ubuntu, Debian
bionic
Released (3.20240514.0ubuntu0.18.04.1+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
focal
Released (3.20240514.0ubuntu0.20.04.1)
jammy
Released (3.20240514.0ubuntu0.22.04.1)
mantic
Released (3.20240514.0ubuntu0.23.10.1)
noble Not vulnerable
(3.20240312.1build1)
trusty Ignored
(trusty doesn't support early microcode loading at runtime)
upstream Needs triage

xenial
Released (3.20240514.0ubuntu0.16.04.1+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H