CVE-2022-21688

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To be abused, this vulnerability requires rendering in the history tab, so some user interaction is required. An adversary with knowledge of the Onion service address in public mode or with authentication in private mode can perform a Denial of Service attack, which quickly results in out-of-memory for the server. This requires the desktop application with rendered history, therefore the impact is only elevated. This issue has been patched in version 2.5."}, {"lang": "es", "value": "OnionShare es una herramienta de c\u00f3digo abierto que permite compartir archivos, alojar sitios web y chatear con amigos de forma segura y an\u00f3nima usando la red Tor. Se ha detectado que las versiones afectadas de la aplicaci\u00f3n de escritorio son vulnerables a una denegaci\u00f3n de servicio por medio de una vulnerabilidad no revelada en el an\u00e1lisis de im\u00e1genes QT. Aproximadamente 20 bytes conllevan a un consumo de memoria de 2GB y esto puede desencadenarse m\u00faltiples veces. Para ser abusada, esta vulnerabilidad requiere la renderizaci\u00f3n en la pesta\u00f1a del historial, por lo que es requerido alguna interacci\u00f3n del usuario. Un adversario con conocimiento de la direcci\u00f3n del servicio de Onion en modo p\u00fablico o con autenticaci\u00f3n en modo privado puede llevar a cabo un ataque de denegaci\u00f3n de servicio, que r\u00e1pidamente resulta en el agotamiento de la memoria del servidor. Esto requiere la aplicaci\u00f3n de escritorio con el historial renderizado, por lo que el impacto es s\u00f3lo elevado. 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