Vulnerability-Lookup

CNVD-2022-21234

Vulnerability from cnvd - Published: 2022-03-21

Title

Tenda AC9存在未明漏洞

Description

Tenda AC9是中国腾达（Tenda）公司的一款无线路由器。 Tenda AC9 v3.0 存在安全漏洞，该漏洞允许通过 guestuser字段中的shell元字符远程执行代码到带有POST的 __fastcall函数要求。目前没有详细的漏洞细节提供。

Severity

高

Formal description

目前厂商暂未发布修复措施解决此安全问题，建议使用此软件的用户随时关注厂商主页或参考网址以获取解决办法：

https://github.com/Lyc-heng/routers/blob/a80b30bccfc9b76f3a4868ff28ad5ce2e0fca180/routers/rce1.md

Reference

https://github.com/Lyc-heng/Router/blob/main/Tenda/rce1.md

Impacted products

Name
Tenda AC9 15.03.06.42_multi

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-26728"
    }
  },
  "description": "Tenda AC9\u662f\u4e2d\u56fd\u817e\u8fbe\uff08Tenda\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u65e0\u7ebf\u8def\u7531\u5668\u3002\n\nTenda AC9 v3.0 \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u5141\u8bb8\u901a\u8fc7 guestuser\u5b57\u6bb5\u4e2d\u7684shell\u5143\u5b57\u7b26\u8fdc\u7a0b\u6267\u884c\u4ee3\u7801\u5230\u5e26\u6709POST\u7684 __fastcall\u51fd\u6570\u8981\u6c42\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u6682\u672a\u53d1\u5e03\u4fee\u590d\u63aa\u65bd\u89e3\u51b3\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u5efa\u8bae\u4f7f\u7528\u6b64\u8f6f\u4ef6\u7684\u7528\u6237\u968f\u65f6\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u6216\u53c2\u8003\u7f51\u5740\u4ee5\u83b7\u53d6\u89e3\u51b3\u529e\u6cd5\uff1a\r\n\r\nhttps://github.com/Lyc-heng/routers/blob/a80b30bccfc9b76f3a4868ff28ad5ce2e0fca180/routers/rce1.md",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-21234",
  "openTime": "2022-03-21",
  "products": {
    "product": "Tenda AC9  15.03.06.42_multi"
  },
  "referenceLink": "https://github.com/Lyc-heng/Router/blob/main/Tenda/rce1.md",
  "serverity": "\u9ad8",
  "submitTime": "2022-02-15",
  "title": "Tenda AC9\u5b58\u5728\u672a\u660e\u6f0f\u6d1e"
}

CVE-2020-26728 (GCVE-0-2020-26728)

Vulnerability from cvelistv5 – Published: 2022-02-11 18:05 – Updated: 2024-08-04 15:56

Summary

A vulnerability was discovered in Tenda AC9 v3.0 V15.03.06.42_multi and Tenda AC9 V1.0 V15.03.05.19(6318)_CN which allows for remote code execution via shell metacharacters in the guestuser field to the __fastcall function with a POST request.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://github.com/Lyc-heng/Router/blob/main/Tend…	x_refsource_MISC
https://github.com/Lyc-heng/routers/blob/a80b30bc…	x_refsource_MISC
https://github.com/Lyc-heng/routers/blob/main/rou…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T15:56:05.058Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/Lyc-heng/Router/blob/main/Tenda/rce1.md"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/Lyc-heng/routers/blob/a80b30bccfc9b76f3a4868ff28ad5ce2e0fca180/routers/rce1.md"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/Lyc-heng/routers/blob/main/routers/rce1.md"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "versions": [
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        }
      ],
      "problemTypes": [
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            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2022-02-17T13:58:54.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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      },
      "references": [
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          "url": "https://github.com/Lyc-heng/Router/blob/main/Tenda/rce1.md"
        },
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        },
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          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/Lyc-heng/routers/blob/main/routers/rce1.md"
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          "ID": "CVE-2020-26728",
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                "product": {
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                      "product_name": "n/a",
                      "version": {
                        "version_data": [
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                            "version_value": "n/a"
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                "vendor_name": "n/a"
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        "references": {
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            },
            {
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            },
            {
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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.

Action not permitted

CNVD-2022-21234

CVE-2020-26728 (GCVE-0-2020-26728)

Tags

Sightings

Nomenclature

Related by attack behaviour