CVE-2023-43758
Publication date 12 February 2025
Last updated 3 July 2025
Ubuntu priority
Description
Improper input validation in UEFI firmware for some Intel(R) processors may allow a privileged user to potentially enable escalation of privilege via local access.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| intel-microcode | ||
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty |
Not affected
|
Notes
alexmurray
There is no evidence that this CVE can be addressed by a microcode update from the OS itself, only from the BIOS
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
8.2 · High
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | High |
| User interaction | None |
| Scope | Changed |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2023-43758
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01139.html
- https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20250211
- https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01139.html