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CVE-2020-8320

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 ThinkPad 11e Yoga Gen 6等都是中国联想（Lenovo）公司的一款笔记本电脑。 多款Lenovo ThinkPad产品中存在安全漏洞。攻击者可利用该漏洞提升权限。以下产品及版本受到影响：ThinkPad 11e Yoga Gen 6；ThinkPad E455；ThinkPad E555；ThinkPad E460；ThinkPad E560 ；ThinkPad E465；ThinkPad E565等。

CVSS 6.4 · Medium EPSS 0.28% · P19

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2020-8320

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An internal shell was included in BIOS image in some ThinkPad models that could allow escalation of privilege.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
遗留的调试代码
Source: CVE Program / CVE List V5
Vulnerability Title
多款Lenovo ThinkPad产品安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Lenovo ThinkPad 11e Yoga Gen 6等都是中国联想（Lenovo）公司的一款笔记本电脑。 多款Lenovo ThinkPad产品中存在安全漏洞。攻击者可利用该漏洞提升权限。以下产品及版本受到影响：ThinkPad 11e Yoga Gen 6；ThinkPad E455；ThinkPad E555；ThinkPad E460；ThinkPad E560 ；ThinkPad E465；ThinkPad E565等。
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-2020-8320

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2020-8320

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Vendor Advisories for CVE-2020-8320 (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-2020-8321 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-2020-8334 6.1 MEDIUM 多款Lenovo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
Same weakness: CWE-489

V. Comments for CVE-2020-8320

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