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CVE-2021-45910

Estado: ModificadaAlta (7.8)—

An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main function. It allows an attacker to write data outside of the allocated buffer. The attacker has control over a part of the address that data is written to, control over the written data, and (to some extent) control over the amount of data that is written.

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 LinuxGif2apng Project — Gif2apng

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-45910",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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          "attackVector": "LOCAL",
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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",
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        "impactScore": 5.9,
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  "affected": [
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      "affectedData": [
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  "published": "2021-12-28T01:15:07.560",
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      "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1002667",
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        "Mailing List",
        "Third Party Advisory"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
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      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main function. It allows an attacker to write data outside of the allocated buffer. The attacker has control over a part of the address that data is written to, control over the written data, and (to some extent) control over the amount of data that is written."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema en gif2apng versión 1.9. Se presenta un desbordamiento del búfer en la región heap de la memoria en la función main. Permite a un atacante escribir datos fuera del búfer asignado. El atacante presenta control sobre una parte de la dirección en la que son escritos los datos, control sobre los datos escritos y (hasta determinado punto) control sobre la cantidad de datos que son escritos"
    }
  ],
  "lastModified": "2026-06-17T04:14:14.340",
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}