CVE-2021-0144
Description
A flaw was found in the Linux kernel. The Intel BIOS Shared SW Architecture (BSSA) Design for Test (DFT) feature may allow escalation of privilege in the customer build time configuration. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Statement
This issue is not in Red Hat supported software. Please contact your system manufacturer for more information and/or potential BIOS firmware update that addresses this issue.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | 6.7 | N/A |
| Attack Vector | Local | Local | N/A |
| Attack Complexity | High | Low | N/A |
| Privileges Required | High | High | N/A |
| User Interaction | None | None | N/A |
| Scope | Changed | Unchanged | N/A |
| Confidentiality | High | High | N/A |
| Integrity Impact | High | High | N/A |
| Availability Impact | High | High | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Other
Technical Impact: Varies by Context
The impact of insecure defaults varies widely depending on the functionality that the product controls.
Acknowledgements
Red Hat would like to thank Alexander Tereshkin, Alexander Matrosov and Adam ‘pi3’ Zabrocki (NVIDIA Product Security Team) for reporting this issue.
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