{"id":148495,"date":"2025-11-15T23:11:59","date_gmt":"2025-11-15T21:11:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/udalyonno-ekspluatiruemaya-uzvimost-v-bluetooth-steke-platformy-android"},"modified":"2025-11-15T23:11:59","modified_gmt":"2025-11-15T21:11:59","slug":"udalyonno-ekspluatiruemaya-uzvimost-v-bluetooth-steke-platformy-android","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/udalyonno-ekspluatiruemaya-uzvimost-v-bluetooth-steke-platformy-android","title":{"rendered":"Uma vulnerabilidade explor\u00e1vel remotamente no stack Bluetooth da plataforma Android","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

No boletim de seguran\u00e7a de novembro do Android, foi publicada informa\u00e7\u00e3o sobre a vulnerabilidade CVE-2025-48593 no subsistema Bluetooth, que afeta vers\u00f5es do Android de 13 a 16. A vulnerabilidade recebeu um n\u00edvel cr\u00edtico de gravidade (9,8 de 10), pois pode levar \u00e0 execu\u00e7\u00e3o remota de c\u00f3digo ao processar pacotes Bluetooth especialmente formatados. <\/p>\n

A Google ainda n\u00e3o divulgou uma descri\u00e7\u00e3o detalhada da vulnerabilidade, mas pesquisadores independentes afirmam que o problema n\u00e3o afeta smartphones comuns e diz respeito apenas a dispositivos Bluetooth que podem funcionar como alto-falantes, como alto-falantes inteligentes, smartwatches e sistemas de info-entretenimento automotivo. Para explorar a vulnerabilidade, o usu\u00e1rio deve parear seu dispositivo com o dispositivo do atacante; ou seja, para bloquear o problema de forma indireta, basta n\u00e3o aceitar solicita\u00e7\u00f5es de pareamento suspeitas (no boletim da Google foi mencionado que n\u00e3o s\u00e3o necess\u00e1rias a\u00e7\u00f5es do usu\u00e1rio para a explora\u00e7\u00e3o). <\/p>\n

A corre\u00e7\u00e3o envolve a adi\u00e7\u00e3o de uma chamada para verificar a exist\u00eancia do Banco de Dados de Descoberta ao trabalhar com o perfil Bluetooth Handsfree e a interrup\u00e7\u00e3o da busca por pares usando o protocolo SDP (Protocolo de Descoberta de Servi\u00e7o), al\u00e9m do reset e limpeza da estrutura p_disc_db («banco de dados de descoberta»). Determinadas manipula\u00e7\u00f5es para retornar erros e retomar conex\u00f5es durante o processo de identifica\u00e7\u00e3o do servi\u00e7o Bluetooth e a negocia\u00e7\u00e3o de intera\u00e7\u00f5es. servidor<\/a> com o cliente levam a um acesso a uma \u00e1rea de mem\u00f3ria j\u00e1 liberada (use-after-free). <\/p>\n

A corre\u00e7\u00e3o j\u00e1 foi integrada \u00e0 base de c\u00f3digo do LineageOS. Um prot\u00f3tipo inicial de exploit que causa uma falha ao iniciar o Android em um emulador espec\u00edfico est\u00e1 dispon\u00edvel. Tamb\u00e9m foram notadas tentativas de venda de uma exploit funcional na rede, mas, aparentemente, s\u00e3o tentativas de dissemina\u00e7\u00e3o de malware ou vendas de fraudes por golpistas. <\/p>\n

Al\u00e9m dessa vulnerabilidade, a atualiza\u00e7\u00e3o de novembro do Android inclui uma corre\u00e7\u00e3o para a vulnerabilidade CVE-2025-48581, que leva \u00e0 eleva\u00e7\u00e3o de privil\u00e9gios. O problema afeta apenas o Android 16 e \u00e9 classificado como cr\u00edtico. A causa da vulnerabilidade \u00e9 um erro l\u00f3gico na fun\u00e7\u00e3o VerifyNoOverlapInSessions do arquivo apexd.cpp, que permite bloquear a instala\u00e7\u00e3o de atualiza\u00e7\u00f5es que corrigem problemas de seguran\u00e7a. Nota-se que a vulnerabilidade pode ser usada para eleva\u00e7\u00e3o de privil\u00e9gios local. N\u00e3o \u00e9 necess\u00e1rio que o usu\u00e1rio realize nenhuma a\u00e7\u00e3o para executar o ataque.
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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