P\u00e4rast kuue kuu arendust on v\u00e4lja antud OpenSSH 8.9, avatud klientide ja serverite rakendus SSH 2.0 ja SFTP protokollide jaoks. Uues versioonis on sshd-s lahendatud haavatavus, mis v\u00f5ib potentsiaalselt v\u00f5imaldada juurdep\u00e4\u00e4su ilma autentimiseta. Probleem on p\u00f5hjustatud t\u00e4isarvu \u00fclevoolust autentimiskoodis, kuid selle \u00e4rakasutamine on v\u00f5imalik vaid koos teiste loogikavigadega koodis. <\/p>\n
Praeguses vormis ei ole haavatavus \u00e4rakasutatav, kui on aktiveeritud privileegide jagamise re\u017eiim, kuna selle v\u00e4ljendumine on blokeeritud eraldi kontrollide abil, mida viiakse l\u00e4bi privileegide jagamise j\u00e4lgimisprotsessi koodis. Privileegide jagamise re\u017eiim on vaikimisi aktiveeritud alates 2002. aastast, alates OpenSSH 3.2.2-st, ja on kohustuslik alates OpenSSH 7.5 v\u00e4ljaandmisest, mis avaldati 2017. aastal. \u00dchtlasi blokeeritakse haavatavus kaasaskantavates OpenSSH versioonides alates 6.5 (2014. aasta) v\u00e4ljaandest, kui kompileerimist toetatakse t\u00e4isarvu \u00fclevoolude kaitse lippudega. <\/p>\n
Muud muudatused: <\/p>\n
\u00dches j\u00e4rgmises v\u00e4ljalaskes on plaanis vaikimisi muuta scp utiliit SFTP kasutamiseks vananenud SCP\/RCP protokolli asemel. SFTP kasutab etteaimatavaid meetodeid nimede t\u00f6\u00f6tlemiseks ning ei kasuta glob-mallide t\u00f6\u00f6tlemist failinimedes teise hosti poolel, mis tekitab turbeprobleeme. Eelk\u00f5ige SCP ja RCP kasutamisel teeb server otsuse, millised failid ja kaustad kliendile edastada, ning klient kontrollib vaid tagastatud objektide nimede \u00f5igsust, mis, kui klient ei tee piisavaid kontrolle, v\u00f5imaldab serveri<\/a> edastada teisi failinimesid, mis erinevad n\u00f5utud omadest. SFTP protokoll ei kannata neid probleeme, kuid ei toeta eriteede avamist, nagu \u00ab~\/\u00bb. Selle erinevuse k\u00f5rvaldamiseks eelmisel v\u00e4ljaandel OpenSSH'is pakuti SFTP-serveri teostuses uut SFTP protokolli laiendust tee avamiseks ~ ja ~user\/. \u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437 OpenSSH 8.9, \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u0430 \u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u043e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430\u043c SSH 2.0 \u0438 SFTP. \u0412 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u0432 sshd \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u0431\u0435\u0437 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u0446\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u044b\u043c \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435\u043c \u0432 \u043a\u043e\u0434\u0435 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438, \u043d\u043e \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u0430 \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u0441\u043e\u0447\u0435\u0442\u0430\u043d\u0438\u0438 \u0441 \u0434\u0440\u0443\u0433\u0438\u043c\u0438 \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0438\u043c\u0438 \u043e\u0448\u0438\u0431\u043a\u0430\u043c\u0438 \u0432 \u043a\u043e\u0434\u0435. \u0412 \u0442\u0435\u043a\u0443\u0449\u0435\u043c […]<\/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-103424","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\udd47OpenSSH 8.9 v\u00e4ljaanne, mis parandab haavatavust sshd-s | ProHoster","description":"P\u00e4rast kuue kuu arendust\u00f6\u00f6d on v\u00e4lja antud OpenSSH 8.9, avatud rakendus SSH 2.0 ja SFTP protokollide 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Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"