{
  "id": "CVE-2021-26843",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-02-07T21:15:11.790",
  "lastModified": "2021-02-09T14:00:58.187",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in sthttpd through 2.27.1. On systems where the strcpy function is implemented with memcpy, the de_dotdot function may cause a Denial-of-Service (daemon crash) due to overlapping memory ranges being passed to memcpy. This can triggered with an HTTP GET request for a crafted filename. NOTE: this is similar to CVE-2017-10671, but occurs in a different part of the de_dotdot function."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema en sthttpd versiones hasta 2.27.1. En los sistemas en los que la funci\u00f3n strcpy es implementada con memcpy, la funci\u00f3n de_dotdot puede causar una denegaci\u00f3n de servicio (bloqueo del demonio) debido a la superposici\u00f3n de rangos de memoria que se pasan a memcpy. Esto puede desencadenar con una petici\u00f3n HTTP GET para un nombre de archivo dise\u00f1ado. NOTA: esto es similar a CVE-2017-10671, pero ocurre en una parte diferente de la funci\u00f3n de_dotdot"
    }
  ],
  "metrics": {
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      {
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        "type": "Primary",
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          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
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          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
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  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
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          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:sthttpd_project:sthttpd:*:*:*:*:*:*:*:*",
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  "references": [
    {
      "url": "https://github.com/blueness/sthttpd/issues/14",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
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}