Vulnerability-Lookup

CNVD-2021-28365

Vulnerability from cnvd - Published: 2021-04-15

Title

SonicWall Email Security管理员账号建立漏洞

Description

SonicWall Email Security是一款EMAIL防护设备。 SonicWall Email Security存在安全漏洞，允许远程攻击者利用漏洞提交特殊的请求，可创建管理员账户。

Severity

高

Patch Name

SonicWall Email Security管理员账号建立漏洞的补丁

Patch Description

SonicWall Email Security是一款EMAIL防护设备。 SonicWall Email Security存在安全漏洞，允许远程攻击者利用漏洞提交特殊的请求，可创建管理员账户。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

用户可参考如下厂商提供的安全补丁以修复该漏洞： https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0007

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-20021

Impacted products

Name
SonicWall Email Security 10.0.9.*

Show details on source website

JSON

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-20021"
    }
  },
  "description": "SonicWall Email Security\u662f\u4e00\u6b3eEMAIL\u9632\u62a4\u8bbe\u5907\u3002\n\nSonicWall Email Security\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u5141\u8bb8\u8fdc\u7a0b\u653b\u51fb\u8005\u5229\u7528\u6f0f\u6d1e\u63d0\u4ea4\u7279\u6b8a\u7684\u8bf7\u6c42\uff0c\u53ef\u521b\u5efa\u7ba1\u7406\u5458\u8d26\u6237\u3002",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u5382\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u8865\u4e01\u4ee5\u4fee\u590d\u8be5\u6f0f\u6d1e\uff1a\r\nhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0007",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-28365",
  "openTime": "2021-04-15",
  "patchDescription": "SonicWall Email Security\u662f\u4e00\u6b3eEMAIL\u9632\u62a4\u8bbe\u5907\u3002\r\n\r\nSonicWall Email Security\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u5141\u8bb8\u8fdc\u7a0b\u653b\u51fb\u8005\u5229\u7528\u6f0f\u6d1e\u63d0\u4ea4\u7279\u6b8a\u7684\u8bf7\u6c42\uff0c\u53ef\u521b\u5efa\u7ba1\u7406\u5458\u8d26\u6237\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": "SonicWall Email Security\u7ba1\u7406\u5458\u8d26\u53f7\u5efa\u7acb\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "SonicWall Email Security 10.0.9.*"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-20021",
  "serverity": "\u9ad8",
  "submitTime": "2021-04-14",
  "title": "SonicWall Email Security\u7ba1\u7406\u5458\u8d26\u53f7\u5efa\u7acb\u6f0f\u6d1e"
}

CVE-2021-20021 (GCVE-0-2021-20021)

Vulnerability from cvelistv5 – Published: 2021-04-09 17:50 – Updated: 2026-08-12 03:55

Summary

A vulnerability in the SonicWall Email Security version 10.0.9.x allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host.

Severity

9.8 (Critical)


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

SSVC

Exploitation: active Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2021-04-20 00:00 UTC

CWE

CWE-269 - Improper Privilege Management

Assigner

sonicwall mitre root

References

2 references

URL	Tags
https://psirt.global.sonicwall.com/vuln-detail/SN…	x_refsource_CONFIRM
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
SonicWall	Email Security	Affected: 10.0.9 and earlier

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:30:07.089Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0007"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-20021",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2021-04-20T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2021-11-03",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20021"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-12T03:55:25.008Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20021"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2021-11-03T00:00:00.000Z",
            "value": "CVE-2021-20021 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Email Security",
          "vendor": "SonicWall",
          "versions": [
            {
              "status": "affected",
              "version": "10.0.9 and earlier"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the SonicWall Email Security version 10.0.9.x allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269: Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-04-09T17:50:14.000Z",
        "orgId": "44b2ff79-1416-4492-88bb-ed0da00c7315",
        "shortName": "sonicwall"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0007"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "PSIRT@sonicwall.com",
          "ID": "CVE-2021-20021",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Email Security",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "10.0.9 and earlier"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "SonicWall"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
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              "value": "A vulnerability in the SonicWall Email Security version 10.0.9.x allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-269: Improper Privilege Management"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0007",
              "refsource": "CONFIRM",
              "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0007"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "44b2ff79-1416-4492-88bb-ed0da00c7315",
    "assignerShortName": "sonicwall",
    "cveId": "CVE-2021-20021",
    "datePublished": "2021-04-09T17:50:14.000Z",
    "dateReserved": "2020-12-17T00:00:00.000Z",
    "dateUpdated": "2026-08-12T03:55:25.008Z",
    "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.

Detection rules are retrieved from Rulezet.

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.