FKIE_CVE-2021-23997

Vulnerability from fkie_nvd - Published: 2021-06-24 14:15 - Updated: 2024-11-21 05:52
Severity ?
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox < 88.
References
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1701942Issue Tracking, Permissions Required, Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2021-16/Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1701942Issue Tracking, Permissions Required, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2021-16/Release Notes, Vendor Advisory
Impacted products
Vendor Product Version
mozilla firefox *
To clipboard 

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  "descriptions": [
    {
      "lang": "en",
      "value": "Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox \u003c 88."
    },
    {
      "lang": "es",
      "value": "Debido a conversiones inesperadas de tipos de datos, podr\u00eda haberse producido un uso de memoria previamente liberada al interactuar con la cach\u00e9 de fuentes. Presumimos que con suficiente esfuerzo esto podr\u00eda haber sido explotado para ejecutar c\u00f3digo arbitrario. Esta vulnerabilidad afecta a Firefox versiones anteriores a 88"
    }
  ],
  "id": "CVE-2021-23997",
  "lastModified": "2024-11-21T05:52:10.723",
  "metrics": {
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        "baseSeverity": "MEDIUM",
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          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.8,
          "confidentialityImpact": "PARTIAL",
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  "published": "2021-06-24T14:15:09.417",
  "references": [
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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