Data Leakage Vulnerability in Lenovo Notebook and ThinkPad Systems
CVE-2021-3786

4.4MEDIUM

Key Information:

Vendor
Lenovo
Status
Notebook And Thinkpad BiOS
Vendor
CVE Published:
12 November 2021

Summary

A potential vulnerability exists within the SMI callback function utilized in the CSME configuration of select Lenovo Notebook and ThinkPad systems. This flaw could enable unauthorized data leaks out of the SMRAM range, which may expose sensitive information and compromise system integrity. Vigilance in system updates and patches is critical for users of the affected products.

Affected Version(s)

Notebook and ThinkPad BIOS various

References

https://support.lenovo.com/us/en/product_security/LEN-67440
x_refsource_MISC

CVSS V3.1

Score:
4.4
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Lenovo thanks Itai Liba and Assaf Carlsbad from SentinelOne for reporting these issues.
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