Vulnerability-Lookup

CNVD-2021-71450

Vulnerability from cnvd - Published: 2021-09-16

Title

ARM mbed TLS信任管理问题漏洞

Description

ARM mbed TLS是英国ARM公司的一款为mbed产品提供安全通讯和加密功能的产品。 ARM mbed TLS存在安全漏洞，该漏洞源于空算法参数项与实数数组(大小为0)相同，因此认为证书是有效的。但是，如果参数在任何方面不匹配，则认为证书无效。目前没有详细的漏洞细节提供。

Severity

中

Patch Name

ARM mbed TLS信任管理问题漏洞的补丁

Patch Description

ARM mbed TLS是英国ARM公司的一款为mbed产品提供安全通讯和加密功能的产品。 ARM mbed TLS存在安全漏洞，该漏洞源于空算法参数项与实数数组(大小为0)相同，因此认为证书是有效的。但是，如果参数在任何方面不匹配，则认为证书无效。目前没有详细的漏洞细节提供。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://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-36478

Impacted products

Name
['ARM mbed TLS <2.25.0', 'ARM mbed TLS 2.16.9 LTS', 'ARM mbed TLS 2.7.18 LTS']

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-36478"
    }
  },
  "description": "ARM mbed TLS\u662f\u82f1\u56fdARM\u516c\u53f8\u7684\u4e00\u6b3e\u4e3ambed\u4ea7\u54c1\u63d0\u4f9b\u5b89\u5168\u901a\u8baf\u548c\u52a0\u5bc6\u529f\u80fd\u7684\u4ea7\u54c1\u3002\n\nARM mbed TLS\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a7a\u7b97\u6cd5\u53c2\u6570\u9879\u4e0e\u5b9e\u6570\u6570\u7ec4(\u5927\u5c0f\u4e3a0)\u76f8\u540c\uff0c\u56e0\u6b64\u8ba4\u4e3a\u8bc1\u4e66\u662f\u6709\u6548\u7684\u3002\u4f46\u662f\uff0c\u5982\u679c\u53c2\u6570\u5728\u4efb\u4f55\u65b9\u9762\u4e0d\u5339\u914d\uff0c\u5219\u8ba4\u4e3a\u8bc1\u4e66\u65e0\u6548\u3002 \u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\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/ARMmbed/mbedtls/releases/tag/v2.25.0",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-71450",
  "openTime": "2021-09-16",
  "patchDescription": "ARM mbed TLS\u662f\u82f1\u56fdARM\u516c\u53f8\u7684\u4e00\u6b3e\u4e3ambed\u4ea7\u54c1\u63d0\u4f9b\u5b89\u5168\u901a\u8baf\u548c\u52a0\u5bc6\u529f\u80fd\u7684\u4ea7\u54c1\u3002\r\n\r\nARM mbed TLS\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a7a\u7b97\u6cd5\u53c2\u6570\u9879\u4e0e\u5b9e\u6570\u6570\u7ec4(\u5927\u5c0f\u4e3a0)\u76f8\u540c\uff0c\u56e0\u6b64\u8ba4\u4e3a\u8bc1\u4e66\u662f\u6709\u6548\u7684\u3002\u4f46\u662f\uff0c\u5982\u679c\u53c2\u6570\u5728\u4efb\u4f55\u65b9\u9762\u4e0d\u5339\u914d\uff0c\u5219\u8ba4\u4e3a\u8bc1\u4e66\u65e0\u6548\u3002 \u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\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": "ARM mbed TLS\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "ARM mbed TLS \u003c2.25.0",
      "ARM mbed TLS 2.16.9 LTS",
      "ARM mbed TLS 2.7.18 LTS"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-36478",
  "serverity": "\u4e2d",
  "submitTime": "2021-08-25",
  "title": "ARM mbed TLS\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2020-36478 (GCVE-0-2020-36478)

Vulnerability from cvelistv5 – Published: 2021-08-23 00:00 – Updated: 2024-08-04 17:30

Summary

An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). A NULL algorithm parameters entry looks identical to an array of REAL (size zero) and thus the certificate is considered valid. However, if the parameters do not match in any way, then the certificate should be considered invalid.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

7 references

URL	Tags
https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18
https://github.com/ARMmbed/mbedtls/issues/3629
https://cert-portal.siemens.com/productcert/pdf/s…
https://lists.debian.org/debian-lts-announce/2021…	mailing-list
https://lists.debian.org/debian-lts-announce/2022…	mailing-list

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JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T17:30:07.313Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/ARMmbed/mbedtls/issues/3629"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdf"
          },
          {
            "name": "[debian-lts-announce] 20211123 [SECURITY] [DLA 2826-1] mbedtls security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html"
          },
          {
            "name": "[debian-lts-announce] 20221225 [SECURITY] [DLA 3249-1] mbedtls security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). A NULL algorithm parameters entry looks identical to an array of REAL (size zero) and thus the certificate is considered valid. However, if the parameters do not match in any way, then the certificate should be considered invalid."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-12-26T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0"
        },
        {
          "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9"
        },
        {
          "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18"
        },
        {
          "url": "https://github.com/ARMmbed/mbedtls/issues/3629"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdf"
        },
        {
          "name": "[debian-lts-announce] 20211123 [SECURITY] [DLA 2826-1] mbedtls security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html"
        },
        {
          "name": "[debian-lts-announce] 20221225 [SECURITY] [DLA 3249-1] mbedtls security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-36478",
    "datePublished": "2021-08-23T00:00:00.000Z",
    "dateReserved": "2021-08-23T00:00:00.000Z",
    "dateUpdated": "2024-08-04T17:30:07.313Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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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.

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CNVD-2021-71450

CVE-2020-36478 (GCVE-0-2020-36478)

Tags

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Nomenclature

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