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CVE-2019-18397

Estado: ModificadaAlta (7.8)—

A buffer overflow in the fribidi_get_par_embedding_levels_ex() function in lib/fribidi-bidi.c of GNU FriBidi through 1.0.7 allows an attacker to cause a denial of service or possibly execute arbitrary code by delivering crafted text content to a user, when this content is then rendered by an application that uses FriBidi for text layout calculations. Examples include any GNOME or GTK+ based application that uses Pango for text layout, as this internally uses FriBidi for bidirectional text layout. For example, the attacker can construct a crafted text file to be opened in GEdit, or a crafted IRC message to be viewed in HexChat.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Debian — Debian LinuxGNU — Fribidi

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2019-18397",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
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      "affectedData": [
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  "published": "2019-11-13T14:15:10.287",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-120"
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  "descriptions": [
    {
      "lang": "en",
      "value": "A buffer overflow in the fribidi_get_par_embedding_levels_ex() function in lib/fribidi-bidi.c of GNU FriBidi through 1.0.7 allows an attacker to cause a denial of service or possibly execute arbitrary code by delivering crafted text content to a user, when this content is then rendered by an application that uses FriBidi for text layout calculations. Examples include any GNOME or GTK+ based application that uses Pango for text layout, as this internally uses FriBidi for bidirectional text layout. For example, the attacker can construct a crafted text file to be opened in GEdit, or a crafted IRC message to be viewed in HexChat."
    },
    {
      "lang": "es",
      "value": "Un desbordamiento de búfer en la función fribidi_get_par_embedding_levels_ex() en la biblioteca lib/fribidi-bidi.c de GNU FriBidi versiones hasta 1.0.7, permite a un atacante causar una denegación de servicio o posiblemente ejecutar código arbitrario al entregar contenido de texto diseñado a un usuario, cuando este contenido es entonces renderizado mediante una aplicación que utiliza FriBidi para los cálculos de diseño de texto. Los ejemplos incluyen cualquier aplicación basada en GNOME o GTK+ que use Pango para el diseño de texto, ya que esto utiliza internamente FriBidi para el diseño de texto bidireccional. Por ejemplo, el atacante puede construir un archivo de texto diseñado para abrirse en GEdit, o un mensaje IRC diseñado para ser visualizado en HexChat."
    }
  ],
  "lastModified": "2026-06-17T02:24:58.563",
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