{"id":123597,"date":"2025-04-18T15:05:07","date_gmt":"2025-04-18T13:05:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-ssh-servere-iz-erlang-otp-dopuskayushhaya-udalyonnoe-vypolnenie-koda"},"modified":"2025-04-18T15:05:07","modified_gmt":"2025-04-18T13:05:07","slug":"uyazvimost-v-ssh-servere-iz-erlang-otp-dopuskayushhaya-udalyonnoe-vypolnenie-koda","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/uyazvimost-v-ssh-servere-iz-erlang-otp-dopuskayushhaya-udalyonnoe-vypolnenie-koda","title":{"rendered":"Vulnerabilidade no servidor SSH do Erlang\/OTP permite execu\u00e7\u00e3o remota de c\u00f3digo","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Uma vulnerabilidade foi identificada na biblioteca ssh inclu\u00edda no conjunto de ferramentas Erlang\/OTP (CVE-2025-32433), permitindo que um c\u00f3digo malicioso seja executado remotamente em um servidor SSH criado com essa biblioteca vulner\u00e1vel, sem a necessidade de autentica\u00e7\u00e3o. O problema foi classificado com um n\u00edvel cr\u00edtico de perigo (10 de 10). <\/p>\n

Um dos pesquisadores de seguran\u00e7a j\u00e1 preparou um exploit funcional para a execu\u00e7\u00e3o de c\u00f3digo em servidores SSH vulner\u00e1veis. Notavelmente, segundo o pesquisador, o c\u00f3digo foi criado utilizando assistentes de IA como GPT-4, Cursor e Sonnet, baseado na an\u00e1lise das altera\u00e7\u00f5es com a corre\u00e7\u00e3o da vulnerabilidade, incluindo um teste para verificar a resolu\u00e7\u00e3o do problema. <\/p>\n

A biblioteca do projeto Erlang\/OTP oferece implementa\u00e7\u00f5es prontas de cliente e servidor<\/a> SSH e SFTP que suportam o protocolo SSH 2.0. \u00c9 poss\u00edvel distinguir servidores SSH problem\u00e1ticos pela sa\u00edda do cabe\u00e7alho \"SSH-2.0-Erlang\/vers\u00e3o\". Servidores SSH baseados em Erlang\/OTP s\u00e3o utilizados em sistemas especializados, como em dispositivos IoT e para computa\u00e7\u00e3o em edge, al\u00e9m de servirem como ferramenta de depura\u00e7\u00e3o \u2014 Erlang permite ativar facilmente um servidor SSH para depurar remotamente suas aplica\u00e7\u00f5es (presume-se que essa capacidade de depura\u00e7\u00e3o possa ter sido deixada ativada em muitos projetos desenvolvidos em Erlang). O problema tamb\u00e9m se manifesta na infraestrutura Elixir (que \u00e9 implementada sobre Erlang) e no framework Phoenix baseado nela, mas o servidor SSH no Phoenix n\u00e3o aceita, por padr\u00e3o, solicita\u00e7\u00f5es de redes externas. <\/p>\n

A vulnerabilidade \u00e9 causada por um erro no c\u00f3digo de an\u00e1lise de mensagens, resultando em que mensagens SSH_MSG_CHANNEL_REQUEST que permitem a execu\u00e7\u00e3o do comando \"exec\" fossem processadas antes da passagem pela autentica\u00e7\u00e3o. Exemplo de c\u00f3digo do exploit: command = 'file:write_file(\"\/lab.txt\", <>). return ( b\"x62\" # SSH_MSG_CHANNEL_REQUEST + struct.pack(\">I\", channel_id) + string_payload(\"exec\") + b\"x01\" # want_reply = true + string_payload(command) ) <\/p>\n

A vulnerabilidade foi corrigida nas vers\u00f5es Erlang\/OTP-27.3.3, 26.2.5.11 e 25.3.2.20. \u00c9 poss\u00edvel acompanhar a corre\u00e7\u00e3o da vulnerabilidade nas seguintes distribui\u00e7\u00f5es: Debian, Ubuntu, Fedora, SUSE\/openSUSE, RHEL, Arch, FreeBSD.
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u041f\u0440\u0438\u043c\u0435\u0447\u0430\u0442\u0435\u043b\u044c\u043d\u043e, \u0447\u0442\u043e \u043f\u043e \u0441\u043b\u043e\u0432\u0430\u043c \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u043a\u043e\u0434 \u0431\u044b\u043b […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-123597","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Vulnerabilidade no servidor SSH do Erlang\/OTP permite a execu\u00e7\u00e3o remota de c\u00f3digo | ProHoster","description":"Uma vulnerabilidade foi identificada na biblioteca ssh inclu\u00edda no conjunto de ferramentas Erlang\/OTP (CVE-2025-32433), permitindo que um c\u00f3digo malicioso seja executado remotamente em um servidor SSH criado com.","canonical_url":"https:\/\/prohoster.info\/pt\/blog\/news\/uyazvimost-v-ssh-servere-iz-erlang-otp-dopuskayushhaya-udalyonnoe-vypolnenie-koda","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pt_PT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 SSH-\u0441\u0435\u0440\u0432\u0435\u0440\u0435 \u0438\u0437 Erlang\/OTP, 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