CVE-2023-28746

Publication date 12 March 2024

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

Information exposure through microarchitectural state after transient execution from some register files for some Intel(R) Atom(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

From the Ubuntu Security Team

It was discovered that some IntelĀ® AtomĀ® Processors did not properly clear register state when performing various operations. A local attacker could use this to obtain sensitive information via a transient execution attack.

Status

Package Ubuntu Release Status
intel-microcode 24.04 LTS noble
Not affected
23.10 mantic
Fixed 3.20240514.0ubuntu0.23.10.1
22.04 LTS jammy
Fixed 3.20240514.0ubuntu0.22.04.1
20.04 LTS focal
Fixed 3.20240514.0ubuntu0.20.04.1
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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Severity score breakdown

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

References

Related Ubuntu Security Notices (USN)

    • USN-6797-1
    • Intel Microcode vulnerabilities
    • 29 May 2024

Other references