cnvd - cnvd-2021-36847

CNVD-2021-36847

Vulnerability from cnvd - Published: 2021-05-25

Title

Tenda G1 and G3缓冲区溢出漏洞

Description

Tenda G1 and G3是中国腾达（Tenda）公司的一个路由器。 Tenda G1 and G3路由器存在缓冲区溢出漏洞，攻击者可利用该漏洞通过精心制作的动作qosIndex请求执行任意代码。

Severity

高

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://www.tenda.com.cn/default.html

Reference

https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg https://nvd.nist.gov/vuln/detail/CVE-2021-27705

Impacted products

Name
['Tenda G1 15.11.0.17（9502）_CN', 'Tenda G3 15.11.0.17（9502）_CN']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-27705"
    }
  },
  "description": "Tenda G1 and G3\u662f\u4e2d\u56fd\u817e\u8fbe\uff08Tenda\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u8def\u7531\u5668\u3002\n\nTenda G1 and G3\u8def\u7531\u5668\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u7cbe\u5fc3\u5236\u4f5c\u7684\u52a8\u4f5cqosIndex\u8bf7\u6c42\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://www.tenda.com.cn/default.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-36847",
  "openTime": "2021-05-25",
  "products": {
    "product": [
      "Tenda G1 15.11.0.17\uff089502\uff09_CN",
      "Tenda G3 15.11.0.17\uff089502\uff09_CN"
    ]
  },
  "referenceLink": "https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg\r\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-27705",
  "serverity": "\u9ad8",
  "submitTime": "2021-04-19",
  "title": "Tenda G1 and G3\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2021-27705 (GCVE-0-2021-27705)

Vulnerability from cvelistv5 – Published: 2021-04-14 14:52 – Updated: 2024-08-03 21:26

Summary

Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/"qosIndex "request. This occurs because the "formQOSRuleDel" function directly passes the parameter "qosIndex" to strcpy without limit.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg

x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T21:26:10.726Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/\"qosIndex \"request. This occurs because the \"formQOSRuleDel\" function directly passes the parameter \"qosIndex\" to strcpy without limit."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-04-14T14:52:09",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-27705",
          "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": "Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/\"qosIndex \"request. This occurs because the \"formQOSRuleDel\" function directly passes the parameter \"qosIndex\" to strcpy without limit."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg",
              "refsource": "MISC",
              "url": "https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-27705",
    "datePublished": "2021-04-14T14:52:09",
    "dateReserved": "2021-02-25T00:00:00",
    "dateUpdated": "2024-08-03T21:26:10.726Z",
    "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-2021-36847

CVE-2021-27705 (GCVE-0-2021-27705)

Tags

Sightings

Nomenclature