{"id":121855,"date":"2025-02-12T02:22:04","date_gmt":"2025-02-12T00:22:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-openssl-3-4-1-s-ustraneniem-uyazvimostej"},"modified":"2025-02-12T02:22:04","modified_gmt":"2025-02-12T00:22:04","slug":"obnovlenie-openssl-3-4-1-s-ustraneniem-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/obnovlenie-openssl-3-4-1-s-ustraneniem-uyazvimostej","title":{"rendered":"A\u017euriranje OpenSSL 3.4.1 s ispravkom ranjivosti","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Dostupne su ispravke za kriptografske biblioteke OpenSSL 3.0.16, 3.1.8, 3.2.4, 3.3.3 i 3.4.1. U verzijama 3.2.4, 3.3.3 i 3.4.1 ispravljena je ranjivost (CVE-2024-12797) koja ima visok nivo opasnosti. Ova ranjivost omogu\u0107ava MITM napad na TLS i DTLS veze. Problem se pojavljuje samo u sistemima koji koriste javne klju\u010deve RPK (Raw Public Key, RFC 7250) za autentifikaciju klijenata. Podrazumevano je podr\u0161ka za RPK onemogu\u0107ena na strani klijenta i poslu\u017eitelja<\/a>. <\/p>\n

Ranjivost je uzrokovana time \u0161to OpenSSL ne vra\u0107a klijentu informaciju o neuspehu autentifikacije servera prilikom uspostavljanja veze koriste\u0107i SSL_VERIFY_PEER mod verifikacije, jer se proces pregovaranja veze ne prekida ispravno. Napada\u010d mo\u017ee izvesti MITM napad i preusmeriti saobra\u0107aj na svoju lokaciju umesto na ciljni server, dok klijent ne\u0107e dobiti informaciju da server<\/a> nije autentifikovan. Problem se pojavljuje od grane OpenSSL 3.2, u kojoj je omogu\u0107ena upotreba RPK umesto X.509 sertifikata. <\/p>\n

Pored toga, u a\u017euriranjima OpenSSL ispravljena je ranjivost CVE-2024-13176 koja omogu\u0107ava napad putem sporednih kanala za rekonstrukciju ECDSA privatnog klju\u010da kroz analizu latencija koje se javljaju prilikom generisanja digitalnog potpisa. Su\u0161tina ranjivosti je u tome \u0161to se za neke vrste elipti\u010dnih krivulja, na primer, NIST P-521, mogu izdvojiti prora\u010duni sa nulama starijim bitovima invertovane vrednosti inicijalizacione vektorske (nonce), \u010dije vreme obrade se razlikuje za 300 nanosekundi. <\/p>\n

U slu\u010daju ECDSA, odre\u0111ivanje \u010dak nekoliko bitova informacije o inicijalizacionoj vektoru dovoljno je za izvo\u0111enje napada putem sekvencijalnog obnavljanja celog privatnog klju\u010da. Da bi napad bio uspe\u0161an, napada\u010d mora imati pristup lokalnom sistemu na kojem se izvr\u0161ava aplikacija koja generi\u0161e digitalne potpise, ili visoko brz pristup mre\u017ei aplikaciji sa vrlo malim ka\u0161njenjima. Napada\u010d tako\u0111e mora biti u mogu\u0107nosti sa velikom precizno\u0161\u0107u analizirati vreme generisanja velikog broja digitalnih potpisa napravljenih nad podacima koje poznaje.
\n
Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 OpenSSL 3.0.16, 3.1.8, 3.2.4, 3.3.3 \u0438 3.4.1. \u0412 \u0432\u0435\u0440\u0441\u0438\u044f\u0445 3.2.4, 3.3.3 \u0438 3.4.1 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-12797), \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u0432\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c MITM-\u0430\u0442\u0430\u043a\u0443 \u043d\u0430 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f TLS \u0438 DTLS. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0445 \u0434\u043b\u044f \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u043e\u0432 \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0435 \u043a\u043b\u044e\u0447\u0438 RPK (Raw Public Key, RFC 7250). \u041f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 […]<\/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-121855","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\udd47A\u017euriranje OpenSSL 3.4.1 sa ispravkama ranjivosti | ProHoster","description":"Dostupne su ispravke za kriptografske biblioteke OpenSSL 3.0.16, 3.1.8, 3.2.4, 3.3.3 i 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