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CVE-2020-8354

Quick assessment

Affected
Lenovo BIOS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在某些lenvovo笔记本机型的variableServiceSmm驱动程序中使用的SMI回调函数存在安全漏洞，可能允许任意代码执行

CVSS 6.4 · Medium EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2020-8354

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A potential vulnerability in the SMI callback function used in the VariableServiceSmm driver in some Lenovo Notebook models may allow arbitrary code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Source: CVE Program / CVE List V5
Vulnerability Title
Lenovo 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
在某些lenvovo笔记本机型的variableServiceSmm驱动程序中使用的SMI回调函数存在安全漏洞，可能允许任意代码执行
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Lenovo BIOS unspecified ~ various -

II. Public POCs for CVE-2020-8354

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III. Intelligence Information for CVE-2020-8354

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Vendor Advisories for CVE-2020-8354 (1)

Same Patch Batch · Lenovo · 2020-11-11 · 3 CVEs total

CVE-2020-8353 6.7 MEDIUM Lenovo Desktop 配置错误漏洞
CVE-2020-8352 2.4 LOW Lenovo Desktop 安全特征问题漏洞

IV. Related Vulnerabilities

Same product: BIOS
Same vendor: Lenovo
Same weakness: CWE-367

V. Comments for CVE-2020-8354

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