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CVE-2021-3402

Estado: ModificadaCrítica (9.1)—

An integer overflow and several buffer overflow reads in libyara/modules/macho/macho.c in YARA v4.0.3 and earlier could allow an attacker to either cause denial of service or information disclosure via a malicious Mach-O file. Affects all versions before libyara 4.0.4

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)

Fedoraproject — FedoraVirustotal — Yara

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-3402",
  "cveTags": [],
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        "source": "nvd@nist.gov",
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
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        "impactScore": 4.9,
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          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
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  "affected": [
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      "affectedData": [
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          "vendor": "n/a",
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  "published": "2021-05-14T21:15:07.537",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
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    }
  ],
  "descriptions": [
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      "lang": "en",
      "value": "An integer overflow and several buffer overflow reads in libyara/modules/macho/macho.c in YARA v4.0.3 and earlier could allow an attacker to either cause denial of service or information disclosure via a malicious Mach-O file. Affects all versions before libyara 4.0.4"
    },
    {
      "lang": "es",
      "value": "Un desbordamiento de enteros y varias lecturas de desbordamiento de búfer en el archivo libyara/modules/macho/macho.c en YARA versiones v4.0.3 y anteriores, podrían permitir a un atacante causar una denegación de servicio o una divulgación de información por medio de un archivo Mach-O malicioso. Afecta a todas las versiones anteriores a libyara 4.0.4"
    }
  ],
  "lastModified": "2026-06-17T04:05:01.763",
  "configurations": [
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