cnvd - cnvd-2021-45756

cnvd-2021-45756

Vulnerability from cnvd

Title: Dell BIOSConnect功能缓冲区溢出漏洞（CNVD-2021-45756）

Description:

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功能存在缓冲区溢出漏洞，攻击者可利用漏洞运行任意代码并绕过UEFI限制。

Severity: 中

Patch Name: Dell BIOSConnect功能缓冲区溢出漏洞（CNVD-2021-45756）的补丁

Patch Description:

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功能存在缓冲区溢出漏洞，攻击者可利用漏洞运行任意代码并绕过UEFI限制。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://www.dell.com/support/kbdoc/en-us/000188682

Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-21574

Impacted products

Name
Dell BIOSConnect

Show details on source website

JSON

To clipboard

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    "cve": {
      "cveNumber": "CVE-2021-21574"
    }
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  "description": "Dell BIOSConnect\u662f\u7f8e\u56fd\u6234\u5c14\uff08Dell\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u57fa\u7840\u5e73\u53f0\uff0c\u4f7fBIOS\u53ef\u8fde\u63a5\u5230Dell \u7684HTTP\u540e\u7aef\uff0c\u5e76\u901a\u8fc7HTTP\u65b9\u6cd5\u52a0\u8f7d\u6620\u50cf\u3002\n\nDell BIOSConnect\u529f\u80fd\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u8fd0\u884c\u4efb\u610f\u4ee3\u7801\u5e76\u7ed5\u8fc7UEFI\u9650\u5236\u3002",
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  "number": "CNVD-2021-45756",
  "openTime": "2021-06-29",
  "patchDescription": "Dell BIOSConnect\u662f\u7f8e\u56fd\u6234\u5c14\uff08Dell\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u57fa\u7840\u5e73\u53f0\uff0c\u4f7fBIOS\u53ef\u8fde\u63a5\u5230Dell \u7684HTTP\u540e\u7aef\uff0c\u5e76\u901a\u8fc7HTTP\u65b9\u6cd5\u52a0\u8f7d\u6620\u50cf\u3002\r\n\r\nDell BIOSConnect\u529f\u80fd\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u8fd0\u884c\u4efb\u610f\u4ee3\u7801\u5e76\u7ed5\u8fc7UEFI\u9650\u5236\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Dell BIOSConnect\u529f\u80fd\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-45756\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Dell BIOSConnect"
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  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-21574",
  "serverity": "\u4e2d",
  "submitTime": "2021-06-25",
  "title": "Dell BIOSConnect\u529f\u80fd\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-45756\uff09"
}

CVE-2021-21574 (GCVE-0-2021-21574)

Vulnerability from cvelistv5

Published

2021-06-24 17:00

Modified

2024-09-16 21:08

Severity ?

7.2 (High) - CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H

CWE

CWE-121 - Stack-based Buffer Overflow

Summary

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.

References

▼	URL	Tags
	https://www.dell.com/support/kbdoc/en-us/000188682	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	Dell	BIOSConnect	Version: unspecified < Gen 11, Gen 10

Show details on NVD website

JSON

To clipboard

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            "confidentialityImpact": "HIGH",
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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