FKIE_CVE-2019-3971

Vulnerability from fkie_nvd - Published: 2019-07-17 21:15 - Updated: 2026-06-17 02:35
Severity
5.5 (Medium) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
Comodo Antivirus versions up to 12.0.0.6810 are vulnerable to a local Denial of Service affecting CmdVirth.exe via its LPC port "cmdvrtLPCServerPort". A low privileged local process can connect to this port and send an LPC_DATAGRAM, which triggers an Access Violation due to hardcoded NULLs used for Source parameter in a memcpy operation that is called for this handler. This results in CmdVirth.exe and its child svchost.exe instances to terminate.
References
vulnreport@tenable.comhttps://www.tenable.com/security/research/tra-2019-34Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.tenable.com/security/research/tra-2019-34Exploit, Third Party Advisory
Impacted products
Vendor Product Version
comodo antivirus *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Comodo Antivirus",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Versions 12.0.0.6810 and below"
            }
          ]
        }
      ],
      "source": "vulnreport@tenable.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:comodo:antivirus:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EA5A70E5-7206-41FE-8EA1-4BD6E935E882",
              "versionEndIncluding": "12.0.0.6810",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Comodo Antivirus versions up to 12.0.0.6810 are vulnerable to a local Denial of Service affecting CmdVirth.exe via its LPC port \"cmdvrtLPCServerPort\". A low privileged local process can connect to this port and send an LPC_DATAGRAM, which triggers an Access Violation due to hardcoded NULLs used for Source parameter in a memcpy operation that is called for this handler. This results in CmdVirth.exe and its child svchost.exe instances to terminate."
    },
    {
      "lang": "es",
      "value": "Comodo Antivirus versiones hasta la 12.0.0.6810 y anteriores, son vulnerables a una Denegaci\u00f3n de Servicio local que afecta al archivo CmdVirth.exe por medio de su puerto LPC \"cmdvrtLPCServerPort\". Un proceso local poco privilegiado puede conectarse a este puerto y enviar un LPC_DATAGRAM, que activa una Violaci\u00f3n de Acceso debido a NULLs embebidos en el disco duro utilizados por el par\u00e1metro Source en una operaci\u00f3n memcpy que es llamada por este controlador. Esto resulta en finalicen las instancias del archivo CmdVirth.exe y su secundario svchost.exe."
    }
  ],
  "id": "CVE-2019-3971",
  "lastModified": "2026-06-17T02:35:58.527",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 2.1,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2019-07-17T21:15:12.657",
  "references": [
    {
      "source": "vulnreport@tenable.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.tenable.com/security/research/tra-2019-34"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.tenable.com/security/research/tra-2019-34"
    }
  ],
  "sourceIdentifier": "vulnreport@tenable.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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