{
  "id": "CVE-2018-6548",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2018-02-02T09:29:00.850",
  "lastModified": "2018-02-21T14:19:53.533",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was initialized once before, its property frame_ would not be changed because of code in vp9parser::Vp9HeaderParser::SetFrame. Its frame_ could be freed while the corresponding pointer would not be updated, leading to a dangling pointer. This is related to the function OutputCluster in webm_info.cc."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto una vulnerabilidad de uso de memoria previamente liberada en libwebm hasta el 02-02-2018. Si un Vp9HeaderParser se inicializaba una vez antes, su propiedad frame_ no se cambiar\u00eda a causa del c\u00f3digo en vp9parser::Vp9HeaderParser::SetFrame. Su frame_could se liberar\u00eda y el puntero correspondiente no se actualizar\u00eda, provocando un puntero colgante. Esto est\u00e1 relacionado con la funci\u00f3n OutputCluster en webm_info.cc."
    }
  ],
  "metrics": {
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      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.0",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
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          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5
        },
        "baseSeverity": "HIGH",
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "acInsufInfo": true,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:webmproject:libwebm:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "1.0.0.27",
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  "references": [
    {
      "url": "https://bugs.chromium.org/p/webm/issues/detail?id=1493",
      "source": "cve@mitre.org",
      "tags": [
        "Permissions Required"
      ]
    },
    {
      "url": "https://github.com/dwfault/PoCs/blob/master/libwebm%20Vp9HeaderParser%20UAF%20by%20PrintVP9Info/libwebm%20Vp9HeaderParser%20UAF%20by%20PrintVP9Info.md",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
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    }
  ]
}