{"id":116209,"date":"2024-05-30T15:40:12","date_gmt":"2024-05-30T13:40:12","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/proekt-xz-opublikoval-rezultat-audita-kommitov-i-pervoe-obnovlenie-posle-vyyavleniya-bekdora"},"modified":"2024-05-30T15:40:12","modified_gmt":"2024-05-30T13:40:12","slug":"proekt-xz-opublikoval-rezultat-audita-kommitov-i-pervoe-obnovlenie-posle-vyyavleniya-bekdora","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/proekt-xz-opublikoval-rezultat-audita-kommitov-i-pervoe-obnovlenie-posle-vyyavleniya-bekdora","title":{"rendered":"XZ projekt objavio je rezultat revizije komiteta i prvo a\u017euriranje nakon otkrivanja backdoora","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Lasse Collin, stari voditelj projekta xz, koji je 2022. godine predao prava novom voditelju Jia Tanu, \u010dija je aktivnost dovela do implementacije backdoora, objavio je ispravne verzije paketa XZ Utils 5.2.13, 5.4.7 i 5.6.2, u kojima su uklonjeni sastojci backdoora i druge sumnjive promjene dodane kao rezultat zlonamjerne aktivnosti prethodnog voditelja. <\/p>\n

Osim toga, objavljen je izvje\u0161taj o recenziji Git repozitorija i promjena koje su dodane od prosinca 2022. godine dok je Jia Tan bio voditelj. Promjene su razra\u0111ene na razini pojedina\u010dnih commitova. Commita u repozitoriju nisu bila potpisana digitalnim potpisom, ali nisu prona\u0111eni tragovi falsifikacije od strane commitera. Ukupno je iz repozitorija uklonjeno 8 zlonamjernih commitova. <\/p>\n

Kod CRC CLMUL jo\u0161 uvijek nije uklonjen iz koda, \u0161to dovodi do la\u017enih aktivacija pri provjeri u MSAN (Memory sanitizer) i problema s OSS Fuzz. U budu\u0107nosti planiraju preraditi ovaj kod, ali za sad je odlu\u010deno da se ne dira kako bi se izbjegla regresija u starijim granama. Nisu prona\u0111ene sumnjive promjene u starijim commitovima dodanim prije promjena povezanih s implementacijom backdoora. Pojedina\u010dno su provjereni po-datote\u010dni fajlovi lokalizacije, metapodaci u tar datotekama i arhive s izdanjima i prijevodima. <\/p>\n

Od promjena tako\u0111er se isti\u010de uklju\u010divanje nagomilanih ispravki gre\u0161aka i uklanjanje potpore mehanizmu IFUNC, koji je dostavljen u Glibc za neizravno pozivanje funkcija, a koji je bio kori\u0161ten za organizaciju presretanja funkcija u backdooru. Istaknuto je da uporaba IFUNC samo komplicira kod, a dobitak u performansama nije zna\u010dajan. Kao mjera opreza, iz paketa sa izvorom tako\u0111er su uklonjeni logotip XZ, PDF verzije man stranica i dva testa za arhitekture x86 i SPARC, u kojima su obra\u0111ivani objektni fajlovi kao ulazni podaci. <\/p>\n

Me\u0111u novostima, dekodera xzdec dodana je podr\u0161ka za 4. verziju ABI mehanizma izolacije aplikacija Landlock. U skripte za izgradnju Autotools dodana je opcija «—enable-doxygen», a u CMake skripti parametar ENABLE_DOXYGEN za generiranje i instalaciju dokumentacije za API liblzma koriste\u0107i Doxygen. Ve\u0107 generirana dokumentacija je uklonjena iz paketa.
\n
Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041b\u0430\u0441\u0441\u0435 \u041a\u043e\u043b\u043b\u0438\u043d (Lasse Collin), \u0441\u0442\u0430\u0440\u044b\u0439 \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u0439 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 xz, \u0432 2022 \u0433\u043e\u0434\u0443 \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0448\u0438\u0439 \u043f\u0440\u0430\u0432\u0430 \u043d\u043e\u0432\u043e\u043c\u0443 \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0435\u043c\u0443 Jia Tan, \u0434\u0435\u044f\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043f\u0440\u0438\u0432\u0435\u043b\u0430 \u043a \u0432\u043d\u0435\u0434\u0440\u0435\u043d\u0438\u044e \u0431\u044d\u043a\u0434\u043e\u0440\u0430, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 XZ Utils 5.2.13, 5.4.7 \u0438 5.6.2, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0434\u0430\u043b\u0435\u043d\u044b \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b \u0431\u044d\u043a\u0434\u043e\u0440\u0430 \u0438 \u043f\u0440\u043e\u0447\u0438\u0435 \u043f\u043e\u0434\u043e\u0437\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f, \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0435 \u0432 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0435 \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u043e\u0439 \u0434\u0435\u044f\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u043e\u0448\u043b\u043e\u0433\u043e \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0435\u0433\u043e. \u041a\u0440\u043e\u043c\u0435 \u0442\u043e\u0433\u043e, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u043e\u0442\u0447\u0451\u0442 \u043e \u0440\u0435\u0446\u0435\u043d\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438 […]<\/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-116209","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\udd47Projekt XZ objavio je rezultat revizije commit-a i prvo a\u017euriranje nakon otkrivanja trojanskog programa | ProHoster","description":"Lasse Collin, stari voditelj projekta xz, koji je 2022. godine prenio prava novom voditelju Jia Tanu, \u010dija je aktivnost dovela do uvo\u0111enja trojanskog programa, objavio je ispravne verzije paketa.","canonical_url":"https:\/\/prohoster.info\/hr\/blog\/news\/proekt-xz-opublikoval-rezultat-audita-kommitov-i-pervoe-obnovlenie-posle-vyyavleniya-bekdora","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hr_HR","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041f\u0440\u043e\u0435\u043a\u0442 XZ \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u0430\u0443\u0434\u0438\u0442\u0430 \u043a\u043e\u043c\u043c\u0438\u0442\u043e\u0432 \u0438 \u043f\u0435\u0440\u0432\u043e\u0435 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