CVE-2021-29473

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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 l\u00ednea de comandos para leer, escribir, eliminar y modificar metadatos de im\u00e1genes Exif, IPTC, XMP e ICC. Se encontr\u00f3 una lectura fuera de l\u00edmites en Exiv2 versiones v0.27.3 y anteriores. Exiv2 es una utilidad de l\u00ednea de comandos y una biblioteca C++ para leer, escribir, eliminar y modificar los metadatos de archivos de imagen. La lectura fuera de l\u00edmites es desencadenada cuando es usado Exiv2 para escribir metadatos en un archivo de imagen dise\u00f1ado. Un atacante podr\u00eda explotar la vulnerabilidad para causar una denegaci\u00f3n de servicio al bloquear Exiv2, si puede enga\u00f1ar a la v\u00edctima de ejecutar Exiv2 en un archivo de imagen dise\u00f1ado. Nota que este bug solo es desencadenado al escribir los metadatos, que es una operaci\u00f3n Exiv2 que es usado con menos frecuencia que la lectura de los metadatos. Por ejemplo, para desencadenar el bug en la aplicaci\u00f3n de l\u00ednea de comandos Exiv2, necesita agregar un argumento de l\u00ednea de comando adicional como \"insert\". El bug es corregido en versi\u00f3n v0.27.4. V\u00e9ase nuestra pol\u00edtica de seguridad para informaci\u00f3n sobre la seguridad de Exiv2"}], "lastModified": "2024-02-16T19:20:28.487", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:exiv2:exiv2:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0A049EBD-7A7E-458F-9ABD-F6626DDEABB9", "versionEndExcluding": "0.27.4"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194"}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"}, {"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}