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CVE-2020-8334

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.

Lenovo Lenove ThinkPad A275等都是中国联想（Lenovo）公司的一款笔记本电脑。 多款Lenovo产品中存在安全漏洞，该漏洞源于BIOS篡改检查机制无法被触发。攻击者可利用该漏洞进行未经授权的访问。以下产品及版本受到影响：Lenovo ThinkPad T495s；X395；T495；A485；A285；A475；A275。

CVSS 6.1 · Medium EPSS 0.31% · P24

Possible ATT&CK Techniques 1 AI

T1542 · Pre-OS Boot
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I. Basic Information for CVE-2020-8334

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad T495s, X395, T495, A485, A285, A475, A275 which may allow for unauthorized access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
多款Lenovo产品安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Lenovo Lenove ThinkPad A275等都是中国联想（Lenovo）公司的一款笔记本电脑。 多款Lenovo产品中存在安全漏洞，该漏洞源于BIOS篡改检查机制无法被触发。攻击者可利用该漏洞进行未经授权的访问。以下产品及版本受到影响：Lenovo ThinkPad T495s；X395；T495；A485；A285；A475；A275。
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 various -

II. Public POCs for CVE-2020-8334

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III. Intelligence Information for CVE-2020-8334

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Vendor Advisories for CVE-2020-8334 (1)

Same Patch Batch · Lenovo · 2020-06-09 · 9 CVEs total

CVE-2019-6173 6.7 MEDIUM Lenovo安装包代码问题漏洞
CVE-2019-6196 6.7 MEDIUM Lenovo安装包代码问题漏洞
CVE-2020-8320 6.4 MEDIUM 多款Lenovo ThinkPad产品安全漏洞
CVE-2020-8321 6.4 MEDIUM Lenovo System Lock Preinstallation driver 安全漏洞
CVE-2020-8322 6.4 MEDIUM Lenovo Legacy USB 安全漏洞
CVE-2020-8323 6.4 MEDIUM Lenovo Legacy SD driver 安全漏洞
CVE-2020-8336 6.4 MEDIUM 多款Lenovo ThinkPad产品安全漏洞
CVE-2020-8337 Synaptics Smart Audio UWP app 代码问题漏洞

IV. Related Vulnerabilities

Same product: BIOS
Same vendor: Lenovo

V. Comments for CVE-2020-8334

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