CVE-2021-3971
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I. Basic Information for CVE-2021-3971
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A potential vulnerability by a driver used during older manufacturing processes on some consumer Lenovo Notebook devices that was mistakenly included in the BIOS image could allow an attacker with elevated privileges to modify firmware protection region by modifying an NVRAM variable.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
遗留的调试代码
Source: NVD (National Vulnerability Database)
Vulnerability Title
Lenovo Notebook 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Lenovo Notebook是中国联想（Lenovo）公司的联想的一款笔记本电脑。 Lenovo Notebook 存在安全漏洞，该漏洞源于旧制造过程中使用的驱动程序错误，并且被错误地包含在 BIOS 映像中。本地特权用户可以通过更改 NVRAM 变量来修改固件保护区域并绕过实施的安全限制。该漏洞允许本地用户升级系统上的特权。
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 | Notebook BIOS | various | - |
II. Public POCs for CVE-2021-3971
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
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- https://support.lenovo.com/us/en/product_security/LEN-73440x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-3971
Same Patch Batch · Lenovo · 2022-04-22 · 15 CVEs total
| CVE-2021-3897 | 9.8 CRITICAL | Lenovo Fan Power Controller2 授权问题漏洞 |
| CVE-2021-3849 | 9.8 CRITICAL | Lenovo Fan Power Controller2和Lenovo System Management Module 授权问题漏洞 |
| CVE-2022-0354 | 7.3 HIGH | Lenovo Vantage代码注入漏洞 |
| CVE-2022-0192 | 7.3 HIGH | Lenovo PCManager 代码问题漏洞 |
| CVE-2022-1108 | 6.7 MEDIUM | Lenovo ThinkPad 缓冲区错误漏洞 |
| CVE-2022-1107 | 6.7 MEDIUM | Lenovo ThinkPad 权限许可和访问控制问题漏洞 |
| CVE-2021-4212 | 6.7 MEDIUM | Lenovo Notebook 输入验证错误漏洞 |
| CVE-2021-4211 | 6.7 MEDIUM | Intel Processors 输入验证错误漏洞 |
| CVE-2021-4210 | 6.7 MEDIUM | Intel Processors 安全漏洞 |
| CVE-2021-3972 | 6.7 MEDIUM | Lenovo Notebook 安全漏洞 |
| CVE-2021-3970 | 6.7 MEDIUM | Lenovo Notebook 输入验证错误漏洞 |
| CVE-2021-3721 | 5.5 MEDIUM | Lenovo Pcmanager 缓冲区错误漏洞 |
| CVE-2022-0636 | 5.0 MEDIUM | Lenovo Thin Installer 输入验证错误漏洞 |
| CVE-2021-3722 | 5.0 MEDIUM | Lenovo Pcmanager 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-3971
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