{"id":30609,"date":"2019-10-31T21:36:28","date_gmt":"2019-10-31T18:36:28","guid":{"rendered":"https:\/\/prohoster.info\/blog\/spetsialisty-nashli-36-novyh-uyazvimostej-v-protokole-4g-lte\/"},"modified":"2019-10-31T21:36:28","modified_gmt":"2019-10-31T18:36:28","slug":"spetsialisty-nashli-36-novyh-uyazvimostej-v-protokole-4g-lte","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/spetsialisty-nashli-36-novyh-uyazvimostej-v-protokole-4g-lte","title":{"rendered":"Especialistas descobriram 36 novas vulnerabilidades no protocolo 4G LTE","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Cada transi\u00e7\u00e3o para um novo padr\u00e3o de rede m\u00f3vel n\u00e3o s\u00f3 significa um aumento na velocidade de transmiss\u00e3o de dados, mas tamb\u00e9m torna a comunica\u00e7\u00e3o mais confi\u00e1vel e protegida contra acessos n\u00e3o autorizados. Para isso, s\u00e3o aproveitadas as vulnerabilidades encontradas nos protocolos anteriores e novas t\u00e9cnicas de verifica\u00e7\u00e3o de seguran\u00e7a s\u00e3o implementadas. Nesse aspecto, a comunica\u00e7\u00e3o atrav\u00e9s do protocolo 5G promete ser mais segura do que a comunica\u00e7\u00e3o utilizando o protocolo 4G (LTE), embora isso n\u00e3o exclua a possibilidade de encontrar vulnerabilidades no futuro relacionadas ao '5G'. Da mesma forma, os anos de opera\u00e7\u00e3o do 4G n\u00e3o isentaram esse protocolo de apresentar muitas novas vulnerabilidades. Um exemplo recente que confirma essa afirma\u00e7\u00e3o \u00e9 o estudo realizado por especialistas sul-coreanos em seguran\u00e7a, que descobriram 36 novas vulnerabilidades perigosas no protocolo 4G.<\/p>\n

\"Especialistas<\/p>\n

Especialistas do Korea Advanced Institute of Science and Technology (KAIST) aplicaram \u00e0 busca por vulnerabilidades no protocolo (na rede) LTE o mesmo m\u00e9todo que \u00e9 utilizado na busca por solu\u00e7\u00f5es problem\u00e1ticas em software para PC e servidores<\/a>. Este \u00e9 o chamado m\u00e9todo de fuzzing, onde o sistema \u00e9 atacado (carregado) com uma sequ\u00eancia de dados incorretos, inesperados ou aleat\u00f3rios. Ap\u00f3s a carga, a resposta do sistema \u00e9 analisada e cen\u00e1rios de prote\u00e7\u00e3o ou aprofundamento do ataque s\u00e3o elaborados. Esse trabalho pode ser realizado em modo semi-autom\u00e1tico, confiando ao sistema a implementa\u00e7\u00e3o do processo de transmiss\u00e3o e recep\u00e7\u00e3o de dados, enquanto os cen\u00e1rios de ataque e a an\u00e1lise dos dados obtidos s\u00e3o realizados manualmente. Por exemplo, especialistas da KAIST desenvolveram a ferramenta LTEFuzz para verificar a seguran\u00e7a do protocolo LTE e buscar vulnerabilidades, mas prometem n\u00e3o torn\u00e1-la dispon\u00edvel publicamente, entregando-a apenas a fabricantes de equipamentos e operadores de telecomunica\u00e7\u00f5es.<\/p>\n

\"Especialistas
\n<\/center><\/p>\n

Atrav\u00e9s do LTEFuzz, foram descobertas mais de 50 vulnerabilidades, das quais 36 eram completamente novas. O m\u00e9todo permitiu identificar 15 vulnerabilidades j\u00e1 conhecidas, validando a efic\u00e1cia da tecnologia escolhida (se j\u00e1 se sabe sobre elas, por que n\u00e3o foram corrigidas?). Os testes foram realizados em redes de dois operadores n\u00e3o identificados e em colabora\u00e7\u00e3o com eles, portanto, os usu\u00e1rios comuns n\u00e3o foram prejudicados. Muitas descobertas interessantes foram feitas. Foi poss\u00edvel interceptar assinantes, acessar dados durante a troca entre as esta\u00e7\u00f5es base e os dispositivos, enviar SMS falsos, bloquear chamadas recebidas, desconectar assinantes da rede, gerenciar o tr\u00e1fego e realizar muitas outras a\u00e7\u00f5es. Todos os vazamentos encontrados, incluindo 'falhas' no equipamento das esta\u00e7\u00f5es base, foram comunicados pela equipe da KAIST aos fornecedores e organiza\u00e7\u00f5es 3GPP e GSMA.<\/p>\n

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Fonte: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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