FKIE_CVE-2021-27173

Vulnerability from fkie_nvd - Published: 2021-02-10 19:15 - Updated: 2024-11-21 05:57
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
An issue was discovered on FiberHome HG6245D devices through RP2613. There is a telnet?enable=0&key=calculated(BR0_MAC) backdoor API, without authentication, provided by the HTTP server. This will remove firewall rules and allow an attacker to reach the telnet server (used for the CLI).
References
cve@mitre.orghttps://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#httpd-infoleakExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#httpd-infoleakExploit, Third Party Advisory
Impacted products
Vendor Product Version
fiberhome hg6245d_firmware *
fiberhome hg6245d -
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:fiberhome:hg6245d_firmware:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "584691EE-5328-499D-92DE-F79505905C9C",
              "versionEndIncluding": "rp2613",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered on FiberHome HG6245D devices through RP2613. There is a telnet?enable=0\u0026key=calculated(BR0_MAC) backdoor API, without authentication, provided by the HTTP server. This will remove firewall rules and allow an attacker to reach the telnet server (used for the CLI)."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema en los dispositivos FiberHome HG6245D versiones hasta RP2613.\u0026#xa0;Se presenta una API backdoor de telnet?enable=0\u0026amp;key=calculated(BR0_MAC), sin autenticaci\u00f3n, proporcionada por el servidor HTTP.\u0026#xa0;Esto eliminar\u00e1 las reglas del firewall y permitir\u00e1 a un atacante llegar al servidor telnet (usado para la CLI)"
    }
  ],
  "id": "CVE-2021-27173",
  "lastModified": "2024-11-21T05:57:28.530",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "version": "2.0"
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        "source": "nvd@nist.gov",
        "type": "Primary",
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        "cvssData": {
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          "attackVector": "NETWORK",
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          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
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          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
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  "published": "2021-02-10T19:15:15.183",
  "references": [
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  "vulnStatus": "Modified",
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}


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