« Volver al listado

CVE-2021-27691

Estado: ModificadaCrítica (9.8)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (3)

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-27691",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 10,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-04-16T00:15:12.007",
  "references": [
    {
      "url": "https://hackmd.io/%40aZYpdinUS2SD-yhAeHwOkw/rkhTCGzMd",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://hackmd.io/%40aZYpdinUS2SD-yhAeHwOkw/rkhTCGzMd",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        },
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "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 Inyección 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 través de una petición action/setDebugCfg deseñada. Esto ocurre porque la función \"formSetDebugCfg\" ejecuta la función del sistema de glibc con una entrada que no es de confianza"
    }
  ],
  "lastModified": "2026-06-17T03:45:20.533",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:tendacn:g0_firmware:15.11.0.5\\(5876\\)_cn:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "793EB1BA-9500-4F92-8B2F-05A3E7BF6B28"
            },
            {
              "criteria": "cpe:2.3:o:tendacn:g0_firmware:15.11.0.6\\(9039\\)_cn:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D9B3924A-DD50-4F7B-9FF6-3A89EDD7CF91"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:tendacn:g0:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "D2DC4400-8890-4F5A-AAD3-577626BD4DAE"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:tendacn:g1_firmware:15.11.0.16\\(9024\\)_cn:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "10886B9B-E33E-4748-93BB-3617EF40BF3D"
            },
            {
              "criteria": "cpe:2.3:o:tendacn:g1_firmware:15.11.0.17\\(9502\\)_cn:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F1F4A805-B82C-4815-9999-E2D971E082E8"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:tendacn:g1:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "6839E6D3-4F3E-40FB-828E-D25088E85A21"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:tendacn:g3_firmware:15.11.0.16\\(9024\\)_cn:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "91B52B9F-BBF3-4BDD-8CF1-C253959E4182"
            },
            {
              "criteria": "cpe:2.3:o:tendacn:g3_firmware:15.11.0.17\\(9502\\)_cn:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "67707336-51C8-428B-B4E2-084302C5806D"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:tendacn:g3:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "0A5CDD3E-C5D2-44DF-B330-065CF8ECC29B"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}