{
  "id": "CVE-2021-27691",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-04-16T00:15:12.007",
  "lastModified": "2022-07-12T17:42:04.277",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Command Injection in Tenda G0 routers with firmware versions v15.11.0.6(9039)_CN and v15.11.0.5(5876)_CN , and Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15.11.0.16(9024)_CN allows remote attackers to execute arbitrary OS commands via a crafted action/setDebugCfg request. This occurs because the \"formSetDebugCfg\" function executes glibc's system function with untrusted input."
    },
    {
      "lang": "es",
      "value": "Una Inyecci\u00f3n de Comandos en routers Tenda G0 con versiones de firmware v15.11.0.6 (9039) _CN y v15.11.0.5(5876) _CN, y routers Tenda G1 y G3 con versiones de firmware v15.11.0.17(9502) _CN o v15. 11.0.16(9024) _CN, permite a atacantes remotos ejecutar comandos arbitrarios del sistema operativo a trav\u00e9s de una petici\u00f3n action/setDebugCfg dese\u00f1ada. Esto ocurre porque la funci\u00f3n \"formSetDebugCfg\" ejecuta la funci\u00f3n del sistema de glibc con una entrada que no es de confianza"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 10.0
        },
        "baseSeverity": "HIGH",
        "exploitabilityScore": 10.0,
        "impactScore": 10.0,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        },
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    }
  ],
  "configurations": [
    {
      "operator": "AND",
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:tendacn:g0_firmware:15.11.0.5\\(5876\\)_cn:*:*:*:*:*:*:*",
              "matchCriteriaId": "793EB1BA-9500-4F92-8B2F-05A3E7BF6B28"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:tendacn:g0_firmware:15.11.0.6\\(9039\\)_cn:*:*:*:*:*:*:*",
              "matchCriteriaId": "D9B3924A-DD50-4F7B-9FF6-3A89EDD7CF91"
            }
          ]
        },
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:tendacn:g0:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "D2DC4400-8890-4F5A-AAD3-577626BD4DAE"
            }
          ]
        }
      ]
    },
    {
      "operator": "AND",
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:tendacn:g1_firmware:15.11.0.16\\(9024\\)_cn:*:*:*:*:*:*:*",
              "matchCriteriaId": "10886B9B-E33E-4748-93BB-3617EF40BF3D"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:tendacn:g1_firmware:15.11.0.17\\(9502\\)_cn:*:*:*:*:*:*:*",
              "matchCriteriaId": "F1F4A805-B82C-4815-9999-E2D971E082E8"
            }
          ]
        },
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:tendacn:g1:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "6839E6D3-4F3E-40FB-828E-D25088E85A21"
            }
          ]
        }
      ]
    },
    {
      "operator": "AND",
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:tendacn:g3_firmware:15.11.0.16\\(9024\\)_cn:*:*:*:*:*:*:*",
              "matchCriteriaId": "91B52B9F-BBF3-4BDD-8CF1-C253959E4182"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:tendacn:g3_firmware:15.11.0.17\\(9502\\)_cn:*:*:*:*:*:*:*",
              "matchCriteriaId": "67707336-51C8-428B-B4E2-084302C5806D"
            }
          ]
        },
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:tendacn:g3:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "0A5CDD3E-C5D2-44DF-B330-065CF8ECC29B"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://hackmd.io/@aZYpdinUS2SD-yhAeHwOkw/rkhTCGzMd",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ]
}