FKIE_CVE-2020-3923

Vulnerability from fkie_nvd - Published: 2020-02-27 04:15 - Updated: 2024-11-21 05:31
Severity
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
DVR firmware in TAT-76 and TAT-77 series of products, provided by TONNET, contain misconfigured authentication mechanism. Attackers can crack the default password and gain access to the system.
References
twcert@cert.org.twhttps://tvn.twcert.org.tw/taiwanvn/TVN-201910003Third Party Advisory
twcert@cert.org.twhttps://www.chtsecurity.com/news/4ef5eb3a-fdc3-4d78-8dd7-ec7213e2bbcfThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://tvn.twcert.org.tw/taiwanvn/TVN-201910003Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.chtsecurity.com/news/4ef5eb3a-fdc3-4d78-8dd7-ec7213e2bbcfThird Party Advisory
Impacted products
Vendor Product Version
tonnet tat-77104g1_firmware *
tonnet tat-77104g1 -
tonnet tat-70432n_firmware *
tonnet tat-70432n -
tonnet tat-71416g1_firmware *
tonnet tat-71416g1 -
tonnet tat-71832g1_firmware *
tonnet tat-71832g1 -
tonnet tat-76104g3_firmware *
tonnet tat-76104g3 -
tonnet tat-76108g3_firmware *
tonnet tat-76108g3 -
tonnet tat-76116g3_firmware *
tonnet tat-76116g3 -
tonnet tat-76132g3_firmware *
tonnet tat-76132g3 -
To clipboard 

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  "cveTags": [],
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      "lang": "en",
      "value": "DVR firmware in TAT-76 and TAT-77 series of products, provided by TONNET, contain misconfigured authentication mechanism. Attackers can crack the default password and gain access to the system."
    },
    {
      "lang": "es",
      "value": "El firmware DVR en las series de productos TAT-76 y TAT-77, proporcionados por TONNET, contiene un mecanismo de autenticaci\u00f3n configurado inapropiadamente. Los atacantes pueden descifrar la contrase\u00f1a por defecto y conseguir acceso al sistema"
    }
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  "id": "CVE-2020-3923",
  "lastModified": "2024-11-21T05:31:57.977",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 10.0,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
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          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "exploitabilityScore": 2.2,
        "impactScore": 5.9,
        "source": "twcert@cert.org.tw",
        "type": "Secondary"
      },
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2020-02-27T04:15:10.577",
  "references": [
    {
      "source": "twcert@cert.org.tw",
      "tags": [
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      "url": "https://tvn.twcert.org.tw/taiwanvn/TVN-201910003"
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  "sourceIdentifier": "twcert@cert.org.tw",
  "vulnStatus": "Modified",
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          "lang": "en",
          "value": "CWE-287"
        }
      ],
      "source": "nvd@nist.gov",
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.