FKIE_CVE-2020-3427

Vulnerability from fkie_nvd - Published: 2020-10-14 19:15 - Updated: 2024-11-21 05:31
Severity ?
6.6 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
The Windows Logon installer prior to 4.1.2 did not properly validate file installation paths. This allows an attacker with local user privileges to coerce the installer to write to arbitrary privileged directories. If successful, an attacker can manipulate files used by Windows Logon, cause Denial of Service (DoS) by deleting file(s), or replace system files to potentially achieve elevation of privileges. Note that this can only exploitable during new installations while the installer is running and is not exploitable once installation is finished. Versions 4.1.2 of Windows Logon addresses this issue.
References
psirt@cisco.comhttps://duo.com/docs/rdp-notesRelease Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://duo.com/docs/rdp-notesRelease Notes, Vendor Advisory
Impacted products
Vendor Product Version
cisco duo_authentication_for_windows_logon_and_rdp *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:duo_authentication_for_windows_logon_and_rdp:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D7021EA7-88DF-4394-86DA-A25513FF5D1E",
              "versionEndExcluding": "4.1.2",
              "vulnerable": true
            }
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          "negate": false,
          "operator": "OR"
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Windows Logon installer prior to 4.1.2 did not properly validate file installation paths. This allows an attacker with local user privileges to coerce the installer to write to arbitrary privileged directories. If successful, an attacker can manipulate files used by Windows Logon, cause Denial of Service (DoS) by deleting file(s), or replace system files to potentially achieve elevation of privileges. Note that this can only exploitable during new installations while the installer is running and is not exploitable once installation is finished. Versions 4.1.2 of Windows Logon addresses this issue."
    },
    {
      "lang": "es",
      "value": "El instalador de Windows Logon en versiones anteriores a 4.1.2 no valid\u00f3 correctamente las rutas de instalaci\u00f3n de los archivos. Esto permite que un atacante con privilegios de usuario local pueda coaccionar al instalador para que escriba en directorios privilegiados arbitrarios. Si tiene \u00e9xito, un atacante puede manipular los archivos utilizados por Windows Logon, causar una denegaci\u00f3n de servicio (DoS) mediante la eliminaci\u00f3n de archivos o sustituir los archivos del sistema para lograr potencialmente la elevaci\u00f3n de los privilegios. Tenga en cuenta que esto s\u00f3lo se puede explotar durante las nuevas instalaciones mientras el instalador se est\u00e1 ejecutando y no se puede explotar una vez finalizada la instalaci\u00f3n. La versi\u00f3n 4.1.2 de Windows Logon soluciona este problema"
    }
  ],
  "id": "CVE-2020-3427",
  "lastModified": "2024-11-21T05:31:02.883",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.6,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
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        "obtainOtherPrivilege": false,
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        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 6.6,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
          "version": "3.1"
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        "type": "Secondary"
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          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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  "published": "2020-10-14T19:15:13.977",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://duo.com/docs/rdp-notes"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "Vendor Advisory"
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      "url": "https://duo.com/docs/rdp-notes"
    }
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  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-280"
        }
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      "type": "Secondary"
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          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}


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  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • 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.