FKIE_CVE-2019-9796

Vulnerability from fkie_nvd - Published: 2019-04-26 17:29 - Updated: 2025-11-25 17:50
Severity ?
9.8 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single registration is expected. When a registration is later freed with the removal of the animation controller element, the refresh driver incorrectly leaves a dangling pointer to the driver's observer array. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
References
security@mozilla.orghttps://access.redhat.com/errata/RHSA-2019:0966Third Party Advisory
security@mozilla.orghttps://access.redhat.com/errata/RHSA-2019:1144Third Party Advisory
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1531277Issue Tracking, Permissions Required, Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2019-07/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2019-08/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2019-11/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:0966Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:1144Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1531277Issue Tracking, Permissions Required, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2019-07/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2019-08/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2019-11/Vendor Advisory
Impacted products
Vendor Product Version
mozilla firefox *
mozilla firefox *
mozilla thunderbird *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0EBDA447-2B6B-484B-A50E-998729000755",
              "versionEndExcluding": "60.6.0",
              "vulnerable": true
            },
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              "matchCriteriaId": "DF5B7642-9E9D-4578-9120-B95A6B198177",
              "versionEndExcluding": "66.0",
              "vulnerable": true
            },
            {
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single registration is expected. When a registration is later freed with the removal of the animation controller element, the refresh driver incorrectly leaves a dangling pointer to the driver\u0027s observer array. This vulnerability affects Thunderbird \u003c 60.6, Firefox ESR \u003c 60.6, and Firefox \u003c 66."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de uso despu\u00e9s de liberaci\u00f3n de memoria puede darse cuando el controlador de animaci\u00f3n SMIL registra incorrectamente con el controlador de actualizaci\u00f3n dos veces cuando s\u00f3lo se espera un \u00fanico registro. Cuando se libera un registro con la eliminaci\u00f3n del elemento de controlador de animaci\u00f3n, el controlador de actualizaci\u00f3n deja incorrectamente un puntero pendiente en la matriz de observadores del controlador. Esta vulnerabilidad afecta a Thunderbird, versiones anteriores a 60.6, Firefox ESR, versiones anteriores a 60.6 y Firefox. versiones anteriores a 66."
    }
  ],
  "id": "CVE-2019-9796",
  "lastModified": "2025-11-25T17:50:16.803",
  "metrics": {
    "cvssMetricV2": [
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        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
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          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
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        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
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    "cvssMetricV30": [
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        "cvssData": {
          "attackComplexity": "LOW",
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          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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  "published": "2019-04-26T17:29:02.477",
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  "sourceIdentifier": "security@mozilla.org",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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