Vulnerability-Lookup

CNVD-2021-18393

Vulnerability from cnvd - Published: 2021-03-18

Title

Das U-Boot存在未明漏洞（CNVD-2021-18393）

Description

Das U-Boot是一款主要用于嵌入式系统的开机加载程序。该程序支持PPC、ARM、AVR32、MIPS、x86、68k、Nios与MicroBlaze等多种不同的计算机系统结构。 Das U-Boot 2021.04-rc2之前版本存在安全漏洞，该漏洞源于加载程序错误地处理了修改后的FIT。目前没有详细漏洞细节提供。

Severity

中

Patch Name

Das U-Boot存在未明漏洞（CNVD-2021-18393）的补丁

Patch Description

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://github.com/u-boot/u-boot/commit/b6f4c757959f8850e1299a77c8e5713da78e8ec0

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-27097

Impacted products

Name
DENX Software Engineering Das U-Boot <2021.04-rc2

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-27097",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-27097"
    }
  },
  "description": "Das U-Boot\u662f\u4e00\u6b3e\u4e3b\u8981\u7528\u4e8e\u5d4c\u5165\u5f0f\u7cfb\u7edf\u7684\u5f00\u673a\u52a0\u8f7d\u7a0b\u5e8f\u3002\u8be5\u7a0b\u5e8f\u652f\u6301PPC\u3001ARM\u3001AVR32\u3001MIPS\u3001x86\u300168k\u3001Nios\u4e0eMicroBlaze\u7b49\u591a\u79cd\u4e0d\u540c\u7684\u8ba1\u7b97\u673a\u7cfb\u7edf\u7ed3\u6784\u3002\n\nDas U-Boot 2021.04-rc2\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u52a0\u8f7d\u7a0b\u5e8f\u9519\u8bef\u5730\u5904\u7406\u4e86\u4fee\u6539\u540e\u7684FIT\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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://github.com/u-boot/u-boot/commit/b6f4c757959f8850e1299a77c8e5713da78e8ec0",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-18393",
  "openTime": "2021-03-18",
  "patchDescription": "Das U-Boot\u662f\u4e00\u6b3e\u4e3b\u8981\u7528\u4e8e\u5d4c\u5165\u5f0f\u7cfb\u7edf\u7684\u5f00\u673a\u52a0\u8f7d\u7a0b\u5e8f\u3002\u8be5\u7a0b\u5e8f\u652f\u6301PPC\u3001ARM\u3001AVR32\u3001MIPS\u3001x86\u300168k\u3001Nios\u4e0eMicroBlaze\u7b49\u591a\u79cd\u4e0d\u540c\u7684\u8ba1\u7b97\u673a\u7cfb\u7edf\u7ed3\u6784\u3002\r\n\r\nDas U-Boot 2021.04-rc2\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u52a0\u8f7d\u7a0b\u5e8f\u9519\u8bef\u5730\u5904\u7406\u4e86\u4fee\u6539\u540e\u7684FIT\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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": "Das U-Boot\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-18393\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "DENX Software Engineering Das U-Boot \u003c2021.04-rc2"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-27097",
  "serverity": "\u4e2d",
  "submitTime": "2021-03-17",
  "title": "Das U-Boot\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-18393\uff09"
}

CVE-2021-27097 (GCVE-0-2021-27097)

Vulnerability from cvelistv5 – Published: 2021-02-17 22:36 – Updated: 2025-11-03 18:07

Summary

The boot loader in Das U-Boot before 2021.04-rc2 mishandles a modified FIT.

Severity

7.8 (High)


                        
                          CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:N/S:U/UI:R

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 27/100 over 2381 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/u-boot/u-boot/commit/b6f4c7579…	x_refsource_MISC
https://github.com/u-boot/u-boot/commit/8a7d4cf98…	x_refsource_MISC
https://github.com/u-boot/u-boot/commit/6f3c2d8aa…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2025…

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T18:07:58.736Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/u-boot/u-boot/commit/b6f4c757959f8850e1299a77c8e5713da78e8ec0"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/u-boot/u-boot/commit/8a7d4cf9820ea16fabd25a6379351b4dc291204b"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/u-boot/u-boot/commit/6f3c2d8aa5e6cbd80b5e869bbbddecb66c329d01"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/09/msg00037.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The boot loader in Das U-Boot before 2021.04-rc2 mishandles a modified FIT."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:N/S:U/UI:R",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-02-17T22:50:47.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/u-boot/u-boot/commit/b6f4c757959f8850e1299a77c8e5713da78e8ec0"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/u-boot/u-boot/commit/8a7d4cf9820ea16fabd25a6379351b4dc291204b"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/u-boot/u-boot/commit/6f3c2d8aa5e6cbd80b5e869bbbddecb66c329d01"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-27097",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The boot loader in Das U-Boot before 2021.04-rc2 mishandles a modified FIT."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:N/S:U/UI:R",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/u-boot/u-boot/commit/b6f4c757959f8850e1299a77c8e5713da78e8ec0",
              "refsource": "MISC",
              "url": "https://github.com/u-boot/u-boot/commit/b6f4c757959f8850e1299a77c8e5713da78e8ec0"
            },
            {
              "name": "https://github.com/u-boot/u-boot/commit/8a7d4cf9820ea16fabd25a6379351b4dc291204b",
              "refsource": "MISC",
              "url": "https://github.com/u-boot/u-boot/commit/8a7d4cf9820ea16fabd25a6379351b4dc291204b"
            },
            {
              "name": "https://github.com/u-boot/u-boot/commit/6f3c2d8aa5e6cbd80b5e869bbbddecb66c329d01",
              "refsource": "MISC",
              "url": "https://github.com/u-boot/u-boot/commit/6f3c2d8aa5e6cbd80b5e869bbbddecb66c329d01"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-27097",
    "datePublished": "2021-02-17T22:36:30.000Z",
    "dateReserved": "2021-02-10T00:00:00.000Z",
    "dateUpdated": "2025-11-03T18:07:58.736Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2021-18393

CVE-2021-27097 (GCVE-0-2021-27097)

Tags

Sightings

Nomenclature

Related by attack behaviour