FKIE_CVE-2019-17093

Vulnerability from fkie_nvd - Published: 2019-10-23 17:15 - Updated: 2024-11-21 04:31
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
An issue was discovered in Avast antivirus before 19.8 and AVG antivirus before 19.8. A DLL Preloading vulnerability allows an attacker to implant %WINDIR%\system32\wbemcomn.dll, which is loaded into a protected-light process (PPL) and might bypass some of the self-defense mechanisms. This affects all components that use WMI, e.g., AVGSvc.exe 19.6.4546.0 and TuneupSmartScan.dll 19.1.884.0.
References
cve@mitre.orghttps://safebreach.com/Post/Avast-Antivirus-AVG-Antivirus-DLL-Preloading-into-PPL-and-Potential-AbusesExploit, Technical Description, Third Party Advisory
cve@mitre.orghttps://safebreach.com/blogThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://safebreach.com/Post/Avast-Antivirus-AVG-Antivirus-DLL-Preloading-into-PPL-and-Potential-AbusesExploit, Technical Description, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://safebreach.com/blogThird Party Advisory
Impacted products
Vendor Product Version
avast antivirus *
avg anti-virus *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:avast:antivirus:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "49F47FA8-32A2-415C-9E44-C9442E2A6151",
              "versionEndExcluding": "19.8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:avg:anti-virus:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3CA072C3-5309-4CC3-B8B0-5CE78F914BE4",
              "versionEndExcluding": "19.8",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Avast antivirus before 19.8 and AVG antivirus before 19.8. A DLL Preloading vulnerability allows an attacker to implant %WINDIR%\\system32\\wbemcomn.dll, which is loaded into a protected-light process (PPL) and might bypass some of the self-defense mechanisms. This affects all components that use WMI, e.g., AVGSvc.exe 19.6.4546.0 and TuneupSmartScan.dll 19.1.884.0."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema en Avast antivirus versiones anteriores a 19.8 y AVG antivirus versiones anteriores a 19.8. Una vulnerabilidad de Precarga de DLL permite a un atacante implantar una biblioteca %WINDIR%\\system32\\wbemcomn.dll, que se carga en un proceso protected-light (PPL) y puede omitir algunos de los mecanismos de autodefensa. Esto afecta a todos los componentes que usan WMI, por ejemplo, AVGSvc.exe versi\u00f3n 19.6.4546.0 y TuneupSmartScan.dll versi\u00f3n 19.1.884.0."
    }
  ],
  "id": "CVE-2019-17093",
  "lastModified": "2024-11-21T04:31:40.653",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.4,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.4,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2019-10-23T17:15:12.850",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Technical Description",
        "Third Party Advisory"
      ],
      "url": "https://safebreach.com/Post/Avast-Antivirus-AVG-Antivirus-DLL-Preloading-into-PPL-and-Potential-Abuses"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://safebreach.com/blog"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Technical Description",
        "Third Party Advisory"
      ],
      "url": "https://safebreach.com/Post/Avast-Antivirus-AVG-Antivirus-DLL-Preloading-into-PPL-and-Potential-Abuses"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://safebreach.com/blog"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-427"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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