Improper Write Protection in ThinkPad BIOS Affects Lenovo Devices
CVE-2022-4575

6.7MEDIUM

Key Information:

Vendor
Lenovo
Status
Thinkpad BiOS
Vendor
CVE Published:
30 October 2023

Summary

Improper write protection of UEFI variables in the BIOS of select Lenovo ThinkPad models may allow attackers with physical or local access to exploit the system. This vulnerability can enable the bypassing of Secure Boot, potentially leading to unauthorized modifications or the execution of malicious code on affected devices. Users are advised to ensure that their systems are routinely updated and to follow recommended security practices to mitigate this risk.

Affected Version(s)

ThinkPad BIOS various

References

https://support.lenovo.com/us/en/product_security/LEN-106014

CVSS V3.1

Score:
6.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Lenovo thanks Krzysztof Okupski from IOActive for reporting this issue.
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