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CVE-2023-42667

Publication date 14 August 2024

Last updated 22 August 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

Improper isolation in the Intel(R) Core(TM) Ultra Processor 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® Core™ Ultra Processors did not properly isolate the stream cache. A local authenticated user could potentially use this to escalate their privileges.

Status

Package Ubuntu Release Status
intel-microcode 24.04 LTS noble
Fixed 3.20240813.0ubuntu0.24.04.2
22.04 LTS jammy
Fixed 3.20240813.0ubuntu0.22.04.2
20.04 LTS focal
Fixed 3.20240813.0ubuntu0.20.04.2
18.04 LTS bionic
16.04 LTS xenial
14.04 LTS trusty Ignored trusty doesn't support early microcode loading at runtime

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
intel-microcode

Severity score breakdown

Parameter Value
Base score 7.8 · High
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