cnvd - cnvd-2021-45757

CNVD-2021-45757

Vulnerability from cnvd - Published: 2021-06-29

Title

Dell BIOSConnect功能缓冲区溢出漏洞（CNVD-2021-45757）

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功能存在缓冲区错误漏洞，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-2021-45757）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功能存在缓冲区错误漏洞，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-2021-21573

Impacted products

Name
Dell BIOSConnect

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-21573"
    }
  },
  "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\u7684 HTTP\u540e\u7aef\uff0c\u5e76\u901a\u8fc7HTTP\u65b9\u6cd5\u52a0\u8f7d\u6620\u50cf\u3002\n\nDell BIOSConnect\u529f\u80fd\u5b58\u5728\u7f13\u51b2\u533a\u9519\u8bef\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u8fd0\u884c\u4efb\u610f\u4ee3\u7801\u5e76\u7ed5\u8fc7UEFI\u9650\u5236\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://www.dell.com/support/kbdoc/en-us/000188682",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-45757",
  "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\u7684 HTTP\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\u9519\u8bef\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-2021-45757\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Dell BIOSConnect"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-21573",
  "serverity": "\u4e2d",
  "submitTime": "2021-06-25",
  "title": "Dell BIOSConnect\u529f\u80fd\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-45757\uff09"
}

CVE-2021-21573 (GCVE-0-2021-21573)

Vulnerability from cvelistv5 – Published: 2021-06-24 17:00 – Updated: 2024-09-17 01:11

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.

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

Assigner

dell

References

URL

Tags

https://www.dell.com/support/kbdoc/en-us/000188682

x_refsource_MISC

Impacted products

	Vendor	Product	Version
	Dell	BIOSConnect	Affected: unspecified , < Gen 11, Gen 10 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:16:23.393Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.dell.com/support/kbdoc/en-us/000188682"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "BIOSConnect",
          "vendor": "Dell",
          "versions": [
            {
              "lessThan": "Gen 11, Gen 10",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2021-06-24T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "CWE-121: Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-06-24T17:00:18",
        "orgId": "c550e75a-17ff-4988-97f0-544cde3820fe",
        "shortName": "dell"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.dell.com/support/kbdoc/en-us/000188682"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secure@dell.com",
          "DATE_PUBLIC": "2021-06-24",
          "ID": "CVE-2021-21573",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "BIOSConnect",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "Gen 11, Gen 10"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Dell"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "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."
            }
          ]
        },
        "impact": {
          "cvss": {
            "baseScore": 7.2,
            "baseSeverity": "High",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-121: Stack-based Buffer Overflow"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.dell.com/support/kbdoc/en-us/000188682",
              "refsource": "MISC",
              "url": "https://www.dell.com/support/kbdoc/en-us/000188682"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c550e75a-17ff-4988-97f0-544cde3820fe",
    "assignerShortName": "dell",
    "cveId": "CVE-2021-21573",
    "datePublished": "2021-06-24T17:00:18.090009Z",
    "dateReserved": "2021-01-04T00:00:00",
    "dateUpdated": "2024-09-17T01:11:41.809Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CNVD-2021-45757

CVE-2021-21573 (GCVE-0-2021-21573)

Tags

Sightings

Nomenclature