{
  "id": "CVE-2021-36762",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-08-19T12:15:09.133",
  "lastModified": "2021-08-26T18:14:49.497",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in HCC Embedded InterNiche NicheStack through 4.3. The tfshnd():tftpsrv.c TFTP packet processing function doesn't ensure that a filename is adequately '\\0' terminated; therefore, a subsequent call to strlen for the filename might read out of bounds of the protocol packet buffer (if no '\\0' byte exists within a reasonable range)."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema en HCC Embedded InterNicheStack versiones hasta 4.3. La funci\u00f3n packet processing TFTP tfshnd():tftpsrv.c no asegura que un nombre de archivo est\u00e9 apropiadamente terminado en \"\\0\"; por lo tanto, una llamada posterior a strlen para el nombre de archivo podr\u00eda leer fuera de l\u00edmites del b\u00fafer de paquetes del protocolo (si no presenta ning\u00fan byte \"\\0\" dentro de un rango razonable)."
    }
  ],
  "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:N/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:N/A:N",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 7.8
        },
        "baseSeverity": "HIGH",
        "exploitabilityScore": 10.0,
        "impactScore": 6.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-273"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:hcc-embedded:nichestack:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "4.3",
              "matchCriteriaId": "36A27EF5-D19C-4126-850C-89387A7A1410"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/",
      "source": "cve@mitre.org",
      "tags": [
        "Mitigation",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.hcc-embedded.com/about/about-interniche",
      "source": "cve@mitre.org",
      "tags": [
        "Product"
      ]
    },
    {
      "url": "https://www.kb.cert.org/vuls/id/608209",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ]
    }
  ]
}