Description
In Lenovo systems, SMM BIOS Write Protection is used to prevent writes to SPI Flash. While this provides sufficient protection, an additional layer of protection is provided by SPI Protected Range Registers (PRx). After resuming from S3 sleep mode in various versions of BIOS for some Lenovo ThinkPad systems, the PRx is not set. This does not impact the SMM BIOS Write Protection, which keeps systems protected.
Published: 2020-09-01
Score: 2.4 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

Vendor Solution

No action required. Lenovo has updated BIOS for systems in the product impact section to implement this secondary protection, PRx.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2020-29208 In Lenovo systems, SMM BIOS Write Protection is used to prevent writes to SPI Flash. While this provides sufficient protection, an additional layer of protection is provided by SPI Protected Range Registers (PRx). After resuming from S3 sleep mode in various versions of BIOS for some Lenovo ThinkPad systems, the PRx is not set. This does not impact the SMM BIOS Write Protection, which keeps systems protected.
History

No history.

Subscriptions

Lenovo Thinkpad T490 \(20nx\) Thinkpad T490 \(20nx\) Firmware Thinkpad T490 \(20qx\) Thinkpad T490 \(20qx\) Firmware Thinkpad T490 \(20rx\) Thinkpad T490 \(20rx\) Firmware Thinkpad T490s \(20nx\) Thinkpad T490s \(20nx\) Firmware Thinkpad T495 Drift Thinkpad T495 Drift Firmware Thinkpad T590 \(20nx\) Thinkpad T590 \(20nx\) Firmware Thinkpad X1 Carbon \(20qx\) Thinkpad X1 Carbon \(20qx\) Firmware Thinkpad X1 Yoga \(20qx\) Thinkpad X1 Yoga \(20qx\) Firmware Thinkpad X390 \(20qx\) Thinkpad X390 \(20qx\) Firmware Thinkpad X390 \(20sx\) Thinkpad X390 \(20sx\) Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: lenovo

Published:

Updated: 2024-09-16T23:16:41.057Z

Reserved: 2020-01-28T00:00:00.000Z

Link: CVE-2020-8341

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-09-01T22:15:10.377

Modified: 2024-11-21T05:38:44.680

Link: CVE-2020-8341

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses