CVE-2020-8341

LOW

2.4

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.

CVE Details

CVSS v3.1 Score2.4

SeverityLOW

CVSS VectorCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack VectorPHYSICAL

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published9/1/2020

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

lenovo:thinkpad_t490_\(20nx\)lenovo:thinkpad_t490_\(20nx\)_firmwarelenovo:thinkpad_t490_\(20qx\)lenovo:thinkpad_t490_\(20qx\)_firmwarelenovo:thinkpad_t490_\(20rx\)lenovo:thinkpad_t490_\(20rx\)_firmwarelenovo:thinkpad_t490s_\(20nx\)lenovo:thinkpad_t490s_\(20nx\)_firmwarelenovo:thinkpad_t495_driftlenovo:thinkpad_t495_drift_firmwarelenovo:thinkpad_t590_\(20nx\)lenovo:thinkpad_t590_\(20nx\)_firmwarelenovo:thinkpad_x1_carbon_\(20qx\)lenovo:thinkpad_x1_carbon_\(20qx\)_firmwarelenovo:thinkpad_x1_yoga_\(20qx\)lenovo:thinkpad_x1_yoga_\(20qx\)_firmwarelenovo:thinkpad_x390_\(20qx\)lenovo:thinkpad_x390_\(20qx\)_firmwarelenovo:thinkpad_x390_\(20sx\)lenovo:thinkpad_x390_\(20sx\)_firmware

References

https://support.lenovo.com/us/en/product_security/LEN-30042(psirt@lenovo.com)

https://support.lenovo.com/us/en/product_security/LEN-30042(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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