CVE-2023-49141

Published: 14 August 2024

Improper isolation in some Intel(R) Processors stream cache mechanism may allow an authenticated user to potentially enable escalation of privilege via local access.

From the Ubuntu Security Team

It was discovered that some Intel® Processors did not properly isolate the stream cache. A local authenticated user could potentially use this to escalate their privileges.

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
intel-microcode Launchpad, Ubuntu, Debian	bionic	Released (3.20240813.0ubuntu0.18.04.1+esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	focal	Released (3.20240813.0ubuntu0.20.04.2)
	jammy	Released (3.20240813.0ubuntu0.22.04.2)
	noble	Released (3.20240813.0ubuntu0.24.04.2)
	trusty	Ignored (trusty doesn't support early microcode loading at runtime)
	upstream	Released (3.20240813.2)
	xenial	Released (3.20240813.0ubuntu0.16.04.1+esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	Patches: upstream: https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/commit/cc27f99dbb6646c9fc298896bf95a82769c21838

Severity score breakdown

Parameter	Value
Base score	7.8
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

References

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