{"id":94683,"date":"2020-09-20T01:42:01","date_gmt":"2020-09-19T23:42:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-firefox-dlya-android-pozvolyayushhaya-upravlyat-brauzerom-cherez-obshhij-wi-fi"},"modified":"2020-09-20T01:42:01","modified_gmt":"2020-09-19T23:42:01","slug":"uyazvimost-v-firefox-dlya-android-pozvolyayushhaya-upravlyat-brauzerom-cherez-obshhij-wi-fi","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/uyazvimost-v-firefox-dlya-android-pozvolyayushhaya-upravlyat-brauzerom-cherez-obshhij-wi-fi","title":{"rendered":"Uma vulnerabilidade no Firefox para Android que permite controlar o navegador atrav\u00e9s de uma rede Wi-Fi compartilhada","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

No Firefox para Android foi identificada<\/a><\/noindex> s\u00e9ria uma vulnerabilidade<\/a><\/noindex> na implementa\u00e7\u00e3o do protocolo SSDP<\/a><\/noindex>, utilizado para detectar servi\u00e7os de rede na rede local. A vulnerabilidade permite que um atacante, localizado na mesma rede local ou sem fio, responda a solicita\u00e7\u00f5es de verifica\u00e7\u00e3o do Firefox com uma mensagem UPnP XML com comandos intent<\/a><\/noindex>, que podem abrir uma URI arbitr\u00e1ria no navegador ou chamar manipuladores de outros aplicativos. <\/p>\n

O problema se manifesta at\u00e9 a vers\u00e3o Firefox para Android 68.11.0<\/a><\/noindex> e foi corrigido na vers\u00e3o Firefox para Android 79, ou seja, as vers\u00f5es cl\u00e1ssicas mais antigas do Firefox para Android s\u00e3o vulner\u00e1veis e para corrigir o problema \u00e9 necess\u00e1rio atualizar para a nova edi\u00e7\u00e3o<\/a><\/noindex> do navegador (Fenix), que utiliza o motor GeckoView, constru\u00eddo com base nas tecnologias Firefox Quantum e um conjunto de bibliotecas Mozilla Android Components<\/a><\/noindex>. As vers\u00f5es do Firefox para sistemas desktop n\u00e3o s\u00e3o afetadas pelo problema.<\/p>\n

Para testar a vulnerabilidade est\u00e1 preparado<\/a><\/noindex> um prot\u00f3tipo funcional de exploit. O ataque ocorre sem qualquer a\u00e7\u00e3o do usu\u00e1rio, sendo suficiente que o navegador Firefox para Android vulner\u00e1vel esteja em execu\u00e7\u00e3o no dispositivo m\u00f3vel e que a v\u00edtima esteja na mesma sub-rede que o servidor SSDP do invasor. <\/p>\n

O Firefox para Android periodicamente envia mensagens SSDP em modo de broadcast (multicast UDP) para identificar dispositivos de streaming presentes na rede local, como players de m\u00eddia e Smart TVs. Todos os dispositivos na rede local recebem essas mensagens e t\u00eam a capacidade de enviar uma resposta. Em opera\u00e7\u00e3o normal, o dispositivo retorna um link para o arquivo XML com informa\u00e7\u00f5es do dispositivo que suporta UPnP. Durante o ataque, em vez do link para o XML, pode ser enviada uma URI com comandos intent para Android. <\/p>\n

Comandos intent podem redirecionar o usu\u00e1rio para sites de phishing ou fornecer um link para um arquivo xpi (o navegador sugerir\u00e1 a instala\u00e7\u00e3o da extens\u00e3o). Como as respostas do atacante n\u00e3o t\u00eam limites, ele pode tentar sobrecarregar o navegador com propostas de instala\u00e7\u00e3o ou sites maliciosos, esperando que o usu\u00e1rio cometa um erro e clique na instala\u00e7\u00e3o de um pacote malicioso. Al\u00e9m de abrir links arbitr\u00e1rios no pr\u00f3prio navegador, os comandos intent podem ser usados para processar conte\u00fado em outros aplicativos Android, por exemplo, \u00e9 poss\u00edvel abrir um modelo de e-mail no cliente de e-mail (URI mailto:) ou iniciar uma interface para fazer uma chamada (URI tel:).<\/p>\n


\n

<\/a><\/noindex><\/p>\n

Fonte: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 Firefox \u0434\u043b\u044f Android \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0441\u0435\u0440\u044c\u0451\u0437\u043d\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 SSDP, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0434\u043b\u044f \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0441\u0435\u0440\u0432\u0438\u0441\u043e\u0432 \u0432 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0439 \u0441\u0435\u0442\u0438. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u043c\u0443, \u043d\u0430\u0445\u043e\u0434\u044f\u0449\u0435\u043c\u0443\u0441\u044f \u0432 \u0442\u043e\u0439 \u0436\u0435 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0439 \u0438\u043b\u0438 \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u043e\u0439 \u0441\u0435\u0442\u0438, \u043e\u0442\u0432\u0435\u0442\u0438\u0442\u044c \u043d\u0430 \u043f\u0440\u043e\u0432\u0435\u0440\u043e\u0447\u043d\u044b\u0435 \u0437\u0430\u043f\u0440\u043e\u0441\u044b Firefox \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435\u043c UPnP XML «LOCATION» \u0441 intent-\u043a\u043e\u043c\u0430\u043d\u0434\u0430\u043c\u0438, \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043c\u043e\u0436\u043d\u043e \u043e\u0442\u043a\u0440\u044b\u0442\u044c \u0432 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0435 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0439 URI \u0438\u043b\u0438 \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0434\u0440\u0443\u0433\u0438\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439. 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