{"id":41185,"date":"2020-02-06T14:41:55","date_gmt":"2020-02-06T11:41:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/openwrt-19-07-1"},"modified":"2020-02-06T14:41:55","modified_gmt":"2020-02-06T11:41:55","slug":"openwrt-19-07-1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/openwrt-19-07-1","title":{"rendered":"OpenWrt 19.07.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"


\n \"OpenWrt<\/p>\n

<\/a><\/p>\n

<\/p>\n

Avaldati OpenWrt distributsiooni versioonid 18.06.7<\/a> ja 19.07.1<\/a>, milles on parandatud haavatavus<\/a> CVE-2020-7982 opkg paketihalduris, mille abil oli v\u00f5imalik l\u00e4bi viia MITM-r\u00fcnnak ja asendada repository's laaditud paketi sisu. Koodis esineva kontrollsummade kontrollimise vea t\u00f5ttu sai r\u00fcndaja ignoreerida paketi SHA-256 kontrollsummasid, mis v\u00f5imaldas tal v\u00e4ltida laaditavate ipk-ressursside terviklikkuse kontrollimise mehhanisme.<\/p>\n

<\/noindex><\/p>\n

Probleem eksisteerib alates veebruarist 2017, kui lisati kood, mis ignoreeris algseid t\u00fchikuid, mis eelnesid kontrollsummale. Ruumi j\u00e4tmise vea t\u00f5ttu ei nihkunud n\u00e4itaja stringis ja SHA-256 heksadesimaalse j\u00e4rjestuse dekodeerimise ts\u00fckkel tagastas kohe kontrollsummat nulli pikkusega.<\/p>\n

Kuna pakettihaldur opkg k\u00e4ivitati root'i alt, sai r\u00fcndaja muuta ipk-paketi sisu MITM-r\u00fcnnaku k\u00e4igus, kui see laaditakse alla hoidlatest, kui kasutaja k\u00e4ivitab k\u00e4su «opkg install». Sel viisil sai r\u00fcndaja organiseerida oma koodi t\u00e4itmist root'i \u00f5igustega, lisades paketti oma skripte, mis kutsutakse v\u00e4lja installimise ajal. R\u00fcndaja peab ka pakettide indeksi asendama (n\u00e4iteks allalaadituna downloads.openwrt.org). Muudetud paketi suurus peab vastama algsele, nagu indeksis.<\/p>\n

Uutes versioonides on samuti k\u00f5rvaldatud veel \u00fcks haavatavus<\/a> libubox teegis, mis v\u00f5ib p\u00f5hjustada puhvri \u00fclet\u00e4itumist, kui t\u00f6\u00f6deldakse blobmsg_format_json funktsioonis spetsiaalselt vormindatud serialiseeritud binaardata v\u00f5i JSON-formaadis andmeid. <\/p>\n

<\/noindex><\/noindex><\/p>\n

Allikas: linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u044f \u043f\u0430\u043a\u0435\u0442\u0430. \u0418\u0437-\u0437\u0430 \u043e\u0448\u0438\u0431\u043a\u0438 \u0432 \u043a\u043e\u0434\u0435 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c\u043d\u044b\u0445 \u0441\u0443\u043c\u043c, \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u0439 \u043c\u043e\u0433 \u043f\u0440\u043e\u0438\u0433\u043d\u043e\u0440\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c\u043d\u044b\u0435 \u0441\u0443\u043c\u043c\u044b SHA-256 \u0438\u0437 \u043f\u0430\u043a\u0435\u0442\u0430, \u0447\u0442\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u043b\u043e \u043e\u0431\u043e\u0439\u0442\u0438 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u044b \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u0438 \u0437\u0430\u0433\u0440\u0443\u0436\u0430\u0435\u043c\u044b\u0445 ipk-\u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":41186,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-41185","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"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\n","aioseo_head_json":{"title":"\ud83e\udd47OpenWrt 19.07.1 | 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