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CVE-2021-29473

Status: ModifiedLow (2.5)—

Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. An out-of-bounds read 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 out-of-bounds read is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service by crashing Exiv2, if they can trick the victim into running Exiv2 on a crafted image file.

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Note that this bug is only triggered when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as `insert`. The bug is fixed in version v0.27.4. Please see our security policy for information about Exiv2 security.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (3)

Debian — Debian LinuxExiv2 — Exiv2Fedoraproject — Fedora

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2021-29473",
  "cveTags": [],
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      "description": [
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          "lang": "en",
          "value": "CWE-125"
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    {
      "lang": "en",
      "value": "Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. An out-of-bounds read 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 out-of-bounds read is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service by crashing Exiv2, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as `insert`. The bug is fixed in version v0.27.4. Please see our security policy for information about Exiv2 security."
    },
    {
      "lang": "es",
      "value": "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.&#xa0;Se encontró una lectura fuera de límites en Exiv2 versiones v0.27.3 y anteriores.&#xa0;Exiv2 es una utilidad de línea de comandos y una biblioteca C++ para leer, escribir, eliminar y modificar los metadatos de archivos de imagen.&#xa0;La lectura fuera de límites es desencadenada cuando es usado Exiv2 para escribir metadatos en un archivo de imagen diseñado.&#xa0;Un atacante podría explotar la vulnerabilidad para causar una denegación de servicio al bloquear Exiv2, si puede engañar a la víctima de ejecutar Exiv2 en un archivo de imagen diseñado.&#xa0;Nota que este bug solo es desencadenado al escribir los metadatos, que es una operación Exiv2 que es usado con menos frecuencia que la lectura de los metadatos.&#xa0;Por ejemplo, para desencadenar el bug en la aplicación de línea de comandos Exiv2,&#xa0;necesita agregar un argumento de línea de comando adicional como \"insert\".&#xa0;El bug es corregido en versión v0.27.4.&#xa0;Véase nuestra política de seguridad para información sobre la seguridad de Exiv2"
    }
  ],
  "lastModified": "2026-06-17T03:47:42.810",
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