{"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

V\u00e4lja on antud OpenWrt distributsiooni versioonid 18.06.7<\/a> ja 19.07.1<\/a>, milles on parandatud haavatavus<\/a> CVE-2020-7982 opkg paketihalduris, mis lubas teostada MITM-r\u00fcnnakut ja asendada repository'ist laaditud paketi sisu. Kontrollsumma kontrollimiseks oleva koodi veate t\u00f5ttu sai r\u00fcndaja ignoreerida paketi SHA-256 kontrollsummasid, mis v\u00f5imaldas m\u00f6\u00f6da minna allalaaditavate ipk-resursside terviklikkuse kontrolli mehhanismidest.<\/p>\n

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

Probleem on olemas alates 2017. aasta veebruarist, p\u00e4rast seda, kui lisati kood algsete t\u00fchikute ignoreerimiseks, mis asuvad kontrollsummade ees. T\u00fchikute vahelej\u00e4tmise vea t\u00f5ttu ei liigutanud n\u00e4itaja stringi positsiooni ja SHA-256 heksadekadraalse j\u00e4rjestuse dekodeerimise ts\u00fckkel tagastas kohe kontrollsummat nullpikkusega.<\/p>\n

Kuna opkg paketihaldur k\u00e4ivitati root-kasutajana, sai r\u00fcndaja muuta ipk-paketi sisu MITM-r\u00fcnnaku korral, kui see laaditi kasutaja k\u00e4skluse \u201eopkg install\u201d t\u00e4itmise ajal reposi kaudu. Ta suutis k\u00e4ivitada enda koodi root-re\u017eiimis, lisades paketti oma installimise ajal k\u00e4ivitatavad skriptid. Toime toimumiseks pidi r\u00fcndaja samuti muutma paketindeksi (n\u00e4iteks downloads.openwrt.org'i kaudu edastatava). Muudetud paketi suurus pidi vastama algsele, nagu indekseeritud.<\/p>\n

Uutes versioonides on samuti k\u00f5rvaldatud veel \u00fcks haavatavus<\/a> libubox raamatukogus, mis v\u00f5ib viia puhver\u00fclekuhjani, kui t\u00f6\u00f6tatakse eriti vormindatud serialiseeritud binaandate v\u00f5i JSON-formaadis andmetega blobmsg_format_json funktsioonis. <\/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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