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CVE-2021-4156

Estado: ModificadaAlta (7.1)—

An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws.

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 LinuxLibsndfile Project — Libsndfile

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-4156",
  "cveTags": [],
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
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      "affectedData": [
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          "vendor": "n/a",
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  "vulnStatus": "Modified",
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      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
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  "descriptions": [
    {
      "lang": "en",
      "value": "An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado un fallo de lectura fuera de límites en la funcionalidad del códec FLAC de libsndfile. Un atacante que sea capaz de enviar un archivo especialmente diseñado (por medio de engañar a un usuario para que lo abra o de otro modo) a una aplicación enlazada con libsndfile y que use el códec FLAC, podría desencadenar una lectura fuera de límites que muy probablemente causaría un fallo, pero podría filtrar información de la memoria que podría usarse en una explotación posterior de otros fallos"
    }
  ],
  "lastModified": "2026-06-17T04:19:07.763",
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}