CVE-2021-21574
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I. Basic Information for CVE-2021-21574
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Dell BIOSConnect feature contains a buffer overflow vulnerability. An authenticated malicious admin user with local access to the system may potentially exploit this vulnerability to run arbitrary code and bypass UEFI restrictions.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
Dell BIOSConnect feature 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
DELL Dell BIOSConnect是美国戴尔（DELL）公司的一个基础平台，使 BIOS 可连接到 Dell 的 HTTP 后端，并通过 HTTP 方法加载映像。 Dell BIOSConnect feature 存在缓冲区错误漏洞，该漏洞允许本地访问系统的恶意管理员用户运行任意代码并绕过UEFI限制。
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 |
|---|---|---|---|---|
| Dell | BIOSConnect | unspecified ~ Gen 11, Gen 10 | - |
II. Public POCs for CVE-2021-21574
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://www.dell.com/support/kbdoc/en-us/000188682x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-21574
Same Patch Batch · Dell · 2021-06-24 · 4 CVEs total
| CVE-2021-21572 | 7.2 HIGH | Dell BIOSConnect feature 缓冲区错误漏洞 |
| CVE-2021-21573 | 7.2 HIGH | Dell BIOSConnect feature 缓冲区错误漏洞 |
| CVE-2021-21571 | 5.9 MEDIUM | Dell BIOSConnect信任管理问题漏洞 |
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V. Comments for CVE-2021-21574
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