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CVE-2021-29623

Estado: ModificadaBaja (3.3)—

Exiv2 es una biblioteca C++ y una utilidad de línea de comandos para leer, escribir, eliminar y modificar metadatos de imágenes Exif, IPTC, XMP e ICC. Se encontró una lectura de memoria no inicializada en Exiv2 versiones v0.27.3 y anteriores. Exiv2 es una utilidad de línea de comandos y una biblioteca C++ para leer, escribir, eliminar y modificar los metadatos de archivos de imagen. La lectura de la memoria no inicializada se activa cuando se usa Exiv2 para leer los metadatos de un archivo de imagen diseñado. Un atacante podría potencialmente explotar la vulnerabilidad para filtrar algunos bytes de memoria de pila, si puede engañar a la víctima para que ejecutar Exiv2 en un archivo de imagen diseñado. El bug se corrigió en la versión v0.27.4

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)

Exiv2 — Exiv2Fedoraproject — Fedora

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-29623",
  "cveTags": [],
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 2.9,
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        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
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          "version": "3.1",
          "baseScore": 3.6,
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          "userInteraction": "REQUIRED",
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  "published": "2021-05-13T17:15:07.440",
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      "url": "https://security.gentoo.org/glsa/202312-06",
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  "vulnStatus": "Modified",
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      "value": "Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. A read of uninitialized memory was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The read of uninitialized memory is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to leak a few bytes of stack memory, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4."
    },
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      "lang": "es",
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    }
  ],
  "lastModified": "2026-06-17T03:48:02.867",
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