{
  "id": "CVE-2021-29945",
  "sourceIdentifier": "security@mozilla.org",
  "published": "2021-06-24T14:15:09.763",
  "lastModified": "2021-06-30T19:01:06.930",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash. *Note: This issue only affected x86-32 platforms. Other platforms are unaffected.*. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88."
    },
    {
      "lang": "es",
      "value": "El JIT de WebAssembly pod\u00eda calcular mal el tama\u00f1o de un tipo de retorno, lo que pod\u00eda conllevar a una lectura nula y resultar en un bloqueo. *Nota: Este problema s\u00f3lo afectaba a las plataformas x86-32. Otras plataformas no est\u00e1n afectadas. Esta vulnerabilidad afecta a Firefox ESR versiones anteriores a 78.10, Thunderbird versiones anteriores a 78.10 y Firefox versiones anteriores a 88"
    }
  ],
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          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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          "baseScore": 6.5,
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        "exploitabilityScore": 2.8,
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  "references": [
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1700690",
      "source": "security@mozilla.org",
      "tags": [
        "Issue Tracking",
        "Permissions Required",
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