{"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\/ro\/blog\/news\/uyazvimost-v-ssh-servere-iz-erlang-otp-dopuskayushhaya-udalyonnoe-vypolnenie-koda","title":{"rendered":"O vulnerabilitate \u00een serverul SSH din Erlang\/OTP permite execu\u021bia de cod de la distan\u021b\u0103.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

O bibliotec\u0103 ssh, parte din instrumentarul Erlang\/OTP, a identificat o vulnerabilitate (CVE-2025-32433) care permite executarea de cod pe un server SSH, creat cu ajutorul bibliotecii vulnerabile, f\u0103r\u0103 a necesita autentificare. Problema a fost clasificat\u0103 cu un nivel critic de pericol (10 din 10). <\/p>\n

Unul dintre cercet\u0103torii \u00een securitate a preg\u0103tit deja un exploit func\u021bional pentru a executa cod pe serverele SSH vulnerabile. Este demn de remarcat c\u0103, conform cercet\u0103torului, codul a fost creat cu ajutorul asisten\u021bilor AI GPT-4, Cursor \u0219i Sonnet, pe baza analizei modific\u0103rii cu remedierea vulnerabilit\u0103\u021bii, inclusiv un test pentru a verifica eliminarea problemei. <\/p>\n

Biblioteca din proiectul Erlang\/OTP ofer\u0103 implement\u0103ri gata f\u0103cute pentru client \u0219i server<\/a> SSH \u0219i SFTP, care suport\u0103 protocolul SSH 2.0. Serverele SSH problematice pot fi identificate prin ie\u0219irea titlului \u201eSSH-2.0-Erlang\/versiune\u201d. Serverele SSH bazate pe Erlang\/OTP sunt utilizate \u00een sisteme specializate, cum ar fi dispozitivele IoT \u0219i cele pentru calculul edge, precum \u0219i ca instrument de depanare \u2014 Erlang permite activarea u\u0219oar\u0103 a serverului SSH pentru depanarea de la distan\u021b\u0103 a aplica\u021biilor sale (se presupune c\u0103 o astfel de capacitate de depanare ar putea fi l\u0103sat\u0103 activat\u0103 \u00een multe proiecte scrise \u00een Erlang). Problema se manifest\u0103 \u0219i \u00een instrumentele Elixir (implementate pe Erlang) \u0219i \u00een framework-ul Phoenix bazat pe acesta, dar serverul SSH din Phoenix nu accept\u0103 \u00een mod implicit cereri din re\u021bele externe. <\/p>\n

Vulnerabilitatea este cauzat\u0103 de o eroare \u00een codul de analiz\u0103 a mesajelor, care face ca mesajele SSH_MSG_CHANNEL_REQUEST, permi\u021b\u00e2nd executarea comenzii \u201eexec\u201d, s\u0103 fie procesate \u00eenainte de autentificare. Exemplu de cod din exploit: command = 'file:write_file(\"\/lab.txt\", <>).'; return (b'' # SSH_MSG_CHANNEL_REQUEST + struct.pack('>I', channel_id) + string_payload('exec') + b'' # want_reply = true + string_payload(command)) <\/p>\n

Vulnerabilitatea a fost remediat\u0103 \u00een versiunile Erlang\/OTP-27.3.3, 26.2.5.11 \u0219i 25.3.2.20. Se poate urm\u0103ri remedierea vulnerabilit\u0103\u021bii \u00een distribu\u021bii pe urm\u0103toarele pagini: Debian, Ubuntu, Fedora, SUSE\/openSUSE, RHEL, Arch, FreeBSD.
\n
Sursa: opennet.ro<\/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\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\udd47Vulnerabilitate \u00een serverul SSH din Erlang\/OTP, ce permite executarea de cod la distan\u021b\u0103 | ProHoster","description":"O bibliotec\u0103 ssh, parte 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\u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043a\u043e\u0434\u0430 | ProHoster","og:description":"\u0412 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 ssh, \u0432\u0445\u043e\u0434\u044f\u0449\u0435\u0439 \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f Erlang\/OTP, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2025-32433), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0431\u0435\u0437 \u043f\u0440\u043e\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u0441\u0432\u043e\u0439 \u043a\u043e\u0434 \u043d\u0430 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