CVE-2021-36283
Quick assessment
Affected
Dell CPG 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.
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 BIOS 存在输入验证错误漏洞，该漏洞源于对SMRAM中用户提供的输入验证不足。本地管理员可以使用SMI并在目标系统上执行任意代码。
Possible ATT&CK Techniques 1 AI
T1621 · Multi-Factor Authentication Request Generation
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I. Basic Information for CVE-2021-36283
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user may potentially exploit this vulnerability by using an SMI to gain arbitrary code execution in SMRAM.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Dell BIOS 输入验证错误漏洞
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 BIOS 存在输入验证错误漏洞，该漏洞源于对SMRAM中用户提供的输入验证不足。本地管理员可以使用SMI并在目标系统上执行任意代码。
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
II. Public POCs for CVE-2021-36283
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-36283 (1)
-
https://www.dell.com/support/kbdoc/000191495/ x_refsource_MISC
Same Patch Batch · Dell · 2021-09-28 · 8 CVEs total
| CVE-2021-21522 | 8.2 HIGH | Dell BIOS 信任管理问题漏洞 |
| CVE-2021-36297 | 7.8 HIGH | SupportAssist Client 代码问题漏洞 |
| CVE-2021-36286 | 7.1 HIGH | Dell SupportAssist Client 后置链接漏洞 |
| CVE-2021-21570 | 6.8 MEDIUM | Dell NetWorker 操作系统命令注入漏洞 |
| CVE-2021-21569 | 6.8 MEDIUM | Dell NetWorker 路径遍历漏洞 |
| CVE-2021-36285 | 5.7 MEDIUM | Dell BIOS 安全漏洞 |
| CVE-2021-36284 | 5.7 MEDIUM | Dell BIOS 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-36283
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