nvd-json-data-feeds/CVE-2023/CVE-2023-490xx/CVE-2023-49096.json

{
  "id": "CVE-2023-49096",
  "sourceIdentifier": "security-advisories@github.com",
  "published": "2023-12-06T20:15:07.287",
  "lastModified": "2023-12-12T16:09:48.753",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Jellyfin is a Free Software Media System for managing and streaming media. In affected versions there is an argument injection in the VideosController, specifically the `/Videos/<itemId>/stream` and `/Videos/<itemId>/stream.<container>` endpoints which are present in the current Jellyfin version. Additional endpoints in the AudioController might also be vulnerable, as they differ only slightly in execution. Those endpoints are reachable by an unauthenticated user. In order to exploit this vulnerability an unauthenticated attacker has to guess an itemId, which is a completely random GUID. It\u2019s a very unlikely case even for a large media database with lots of items. Without an additional information leak, this vulnerability shouldn\u2019t be directly exploitable, even if the instance is reachable from the Internet. There are a lot of query parameters that get accepted by the method. At least two of those, videoCodec and audioCodec are vulnerable to the argument injection. The values can be traced through a lot of code and might be changed in the process. However, the fallback is to always use them as-is, which means we can inject our own arguments. Those arguments land in the command line of FFmpeg. Because UseShellExecute is always set to false, we can\u2019t simply terminate the FFmpeg command and execute our own. It should only be possible to add additional arguments to FFmpeg, which is powerful enough as it stands. There is probably a way of overwriting an arbitrary file with malicious content. This vulnerability has been addressed in version 10.8.13. Users are advised to upgrade. There are no known workarounds for this vulnerability."
    },
    {
      "lang": "es",
      "value": "Jellyfin es un sistema multimedia de software libre para gestionar y transmitir medios. En las versiones afectadas hay una inyecci\u00f3n de argumentos en VideosController, espec\u00edficamente los endpoints `/Videos//stream` y `/Videos//stream.` que est\u00e1n presentes en la versi\u00f3n actual de Jellyfin. Los endpoints adicionales en AudioController tambi\u00e9n pueden ser vulnerables, ya que difieren s\u00f3lo ligeramente en la ejecuci\u00f3n. Un usuario no autenticado puede acceder a esos endpoints. Para aprovechar esta vulnerabilidad, un atacante no autenticado debe adivinar un itemId, que es un GUID completamente aleatorio. Es un caso muy improbable incluso para una gran base de datos de medios con muchos elementos. Sin una filtraci\u00f3n de informaci\u00f3n adicional, esta vulnerabilidad no deber\u00eda ser explotable directamente, incluso si se puede acceder a la instancia desde Internet. Hay muchos par\u00e1metros de consulta que el m\u00e9todo acepta. Al menos dos de ellos, videoCodec y audioCodec, son vulnerables a la inyecci\u00f3n de argumentos. Los valores se pueden rastrear a trav\u00e9s de una gran cantidad de c\u00f3digo y pueden cambiarse en el proceso. Sin embargo, la alternativa es usarlos siempre tal como est\u00e1n, lo que significa que podemos inyectar nuestros propios argumentos. Esos argumentos llegan a la l\u00ednea de comando de FFmpeg. Debido a que UseShellExecute siempre est\u00e1 configurado en falso, no podemos simplemente terminar el comando FFmpeg y ejecutar el nuestro. S\u00f3lo deber\u00eda ser posible agregar argumentos adicionales a FFmpeg, que es lo suficientemente poderoso tal como est\u00e1. Probablemente exista una forma de sobrescribir un archivo arbitrario con contenido malicioso. Esta vulnerabilidad se ha solucionado en la versi\u00f3n 10.8.13. Se recomienda a los usuarios que actualicen. No se conocen workarounds para esta vulnerabilidad."
    }
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