P\u00e4rast kuue kuu arendust on v\u00e4lja antud OpenSSH 8.9, avaallikana klient ja server SSH 2.0 ning SFTP protokollide jaoks. Uues versioonis on sshd-s k\u00f5rvaldatud haavatavus, mis v\u00f5ib potentsiaalselt v\u00f5imaldada sisenemist ilma autentimiseta. Probleem on p\u00f5hjustatud t\u00e4isarvude \u00fclevoolust autentimiskoodis, kuid selle \u00e4ra kasutamine on v\u00f5imalik ainult koos teiste loogikavigadega koodis. <\/p>\n
Praeguses vormis ei ole haavatavus \u00e4ra kasutatav, kui on lubatud privileegide jagamise re\u017eiim, kuna selle avaldumine blokeerib eraldi kontrollid, mida tehakse privileegide jagamise j\u00e4lgimise koodis. Privilegeerimise jagamise re\u017eiim aktiveeriti vaikevalikuna 2002. aastal, alates OpenSSH 3.2.2-st, ja see on kohustuslik alates OpenSSH 7.5 v\u00e4ljaandest, mis avaldati 2017. aastal. Lisaks on kaasaskantavates OpenSSH versioonides, alates versioonist 6.5 (2014. aasta), haavatavus blokeeritud kompileerimisega koos t\u00e4isarvude \u00fclevoolu kaitse lipuga. <\/p>\n
Muud muudatused: <\/p>\n
\u00dches j\u00e4rgmistest versioonidest plaanitakse vaikimisi muuta scp t\u00f6\u00f6riist SFTP kasutamiseks, asendades vananenud SCP\/RCP protokolli. SFTP-s kasutatakse ennustatavamaid nime t\u00f6\u00f6tlemise meetodeid, v\u00e4ltides glob-mallide k\u00e4sitsemist failinimedes teise hosti shellis, mis toob kaasa turvaprobleeme. Erity, SCP ja RCP kasutamisel teeb server otsuse, millised failid ja kaustad kliendile edastatakse, samas kui klient kontrollib vaid tagastatud objektide nimede kehtivust. Ilma n\u00f5uetekohaste kontrollideta kliendi poolel v\u00f5ib see lubada serverile<\/a> edasi anda teisi failinimesid, mis erinevad n\u00f5utud failidest. SFTP protokollil puuduvad nimetatud probleemid, kuid see ei toeta eriteede avamist, nagu «~\/». Selle erinevuse k\u00f5rvaldamiseks eelmine OpenSSH v\u00e4ljaanne pakkus v\u00e4lja uue SFTP protokolli laienduse, et avada teed ~\/ 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 koos sshd haavatavuse k\u00f5rvaldamisega | ProHoster","description":"P\u00e4rast kuuekuulist arendust on v\u00e4lja antud OpenSSH 8.9 versioon, avatud versioon SSH 2.0 ja SFTP protokollide alusel 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Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"