{"id":104043,"date":"2022-05-15T09:36:47","date_gmt":"2022-05-15T07:36:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-python-pozvolyayushhaya-vyzvat-sistemnye-komandy-iz-izolirovannyh-skriptov"},"modified":"2022-05-15T09:36:47","modified_gmt":"2022-05-15T07:36:48","slug":"uyazvimost-v-python-pozvolyayushhaya-vyzvat-sistemnye-komandy-iz-izolirovannyh-skriptov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/uyazvimost-v-python-pozvolyayushhaya-vyzvat-sistemnye-komandy-iz-izolirovannyh-skriptov","title":{"rendered":"Nj\u00eb ndryshim n\u00eb Python q\u00eb lejon thirrjen e komandave sistemike nga skriptet e izoluar","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

U publikua nj\u00eb metod\u00eb p\u00ebr t\u00eb anashkaluar sistemet e ekzekutimit t\u00eb izoluar t\u00eb kodit n\u00eb gjuh\u00ebn Python, e bazuar n\u00eb nj\u00eb gabim t\u00eb njohur prej koh\u00ebsh q\u00eb u shfaq n\u00eb Python 2.7, i zbuluar n\u00eb vitin 2012 dhe ende i pa rregulluar n\u00eb Python 3. Gabimi lejon, p\u00ebrmes nj\u00eb kodi t\u00eb ve\u00e7uar n\u00eb gjuh\u00ebn Python, t\u00eb iniciatohet qasja n\u00eb nj\u00eb memorje t\u00eb lir\u00eb (Use-After-Free) n\u00eb CPython. Fillimisht u mendua se gabimi nuk paraqet nj\u00eb k\u00ebrc\u00ebnim p\u00ebr sigurin\u00eb dhe se vet\u00ebm n\u00eb raste shum\u00eb t\u00eb rralla, zakonisht t\u00eb krijuara artificialisht, mund t\u00eb \u00e7oj\u00eb n\u00eb p\u00ebrfundimin e papritur t\u00eb skriptit. <\/p>\n

Nj\u00eb hulumtues sigurie me emrin kn32 u angazhua me problematik\u00ebn dhe arriti t\u00eb p\u00ebrgatis\u00eb nj\u00eb eksploatues funksional, i cili mund\u00ebson thirrjen e \u00e7do komande sistemore pa pasur qasje t\u00eb drejtp\u00ebrdrejt\u00eb n\u00eb metodat si os.system. Eksploatuesi \u00ebsht\u00eb realizuar n\u00eb gjuh\u00ebn e past\u00ebr Python dhe funksionon pa importimin e biblioteka t\u00eb jashtme dhe pa instaluar trajtuesin «code.__new__». Nga hook-et p\u00ebrdoret vet\u00ebm «builtin.__id__», i cili zakonisht nuk ndalohet. Nga ana praktike, kodi i propozuar mund t\u00eb p\u00ebrdoret p\u00ebr t\u00eb anashkaluar mekanizmat e izolimit n\u00eb sh\u00ebrbime dhe mjedise t\u00eb ndryshme (p.sh., n\u00eb mjedise m\u00ebsimore, nd\u00ebrfaqe online, trajtesa t\u00eb integruara, etj.), t\u00eb cilat lejojn\u00eb ekzekutimin e kodit n\u00eb gjuh\u00ebn Python, por kufizojn\u00eb thirrjet e disponueshme dhe nuk lejojn\u00eb qasjen n\u00eb metoda si os.system. <\/p>\n

Kodi i propozuar \u00ebsht\u00eb nj\u00eb analog i thirrjes os.system, i cili funksionon p\u00ebrmes shfryt\u00ebzimit t\u00eb nj\u00eb vulnerabiliteti n\u00eb CPython. Eksploati funksionon me t\u00eb gjitha versionet e Python 3 n\u00eb sisteme me arkitektur\u00ebn x86-64 dhe tregon rezultat t\u00eb q\u00ebndruesh\u00ebm n\u00eb Ubuntu 22.04, madje edhe kur jan\u00eb aktivizuar modet mbrojt\u00ebse PIE, RELRO dhe CET. Funksioni p\u00ebrqendrohet n\u00eb marrjen nga kodi n\u00eb gjuh\u00ebn Python t\u00eb informacionit n\u00eb lidhje me adres\u00ebn e nj\u00eb prej funksioneve n\u00eb kodin ekzekutues t\u00eb CPython. N\u00eb baz\u00eb t\u00eb k\u00ebsaj adrese, llogaritet adresa baz\u00eb e CPython n\u00eb memorie dhe adresa e funksionit system() n\u00eb instanc\u00ebn e libc t\u00eb ngarkuar n\u00eb memorie. N\u00eb p\u00ebrfundim, iniciatohet nj\u00eb kalim direkt n\u00eb nj\u00eb adres\u00eb t\u00eb caktuar system duke z\u00ebvend\u00ebsuar treguesin e argumentit t\u00eb par\u00eb me stringun «\/bin\/sh».

\"Nj\u00eb<\/center>
\n
Burimi: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u043c\u0435\u0442\u043e\u0434 \u043e\u0431\u0445\u043e\u0434\u0430 \u0441\u0438\u0441\u0442\u0435\u043c \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u0434\u0430 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Python, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u0434\u0430\u0432\u043d\u043e \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e\u0439 \u043e\u0448\u0438\u0431\u043a\u0438, \u043f\u043e\u044f\u0432\u0438\u0432\u0448\u0435\u0439\u0441\u044f \u0432 Python 2.7, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043d\u043e\u0439 \u0432 2012 \u0433\u043e\u0434\u0443 \u0438 \u0434\u043e \u0441\u0438\u0445 \u043f\u043e\u0440 \u043d\u0435 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u0439 \u0432 Python 3. \u041e\u0448\u0438\u0431\u043a\u0430 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u0441\u043a\u043e\u043c\u043f\u043e\u043d\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0430 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Python \u0438\u043d\u0438\u0446\u0438\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0435 \u043a \u0443\u0436\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0451\u043d\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 (Use-After-Free) \u0432 \u0421Python. \u0418\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e \u043f\u0440\u0435\u0434\u043f\u043e\u043b\u0430\u0433\u0430\u043b\u043e\u0441\u044c, \u0447\u0442\u043e […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":104044,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-104043","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"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\udd47Cak i siguris\u00eb n\u00eb Python q\u00eb lejon ekzekutimin e komanda sistemore nga skriptet e izoluara | ProHoster","description":"\u00cbsht\u00eb publikuar nj\u00eb metod\u00eb p\u00ebr t\u00eb anashkaluar sistemet e ekzekutimit t\u00eb izoluar t\u00eb kodit n\u00eb gjuh\u00ebn Python, e bazuar n\u00eb nj\u00eb gabim t\u00eb njohur prej koh\u00ebsh, i shfaqur n\u00eb Python 2.7, i identifikuar n\u00eb vitin 2012 dhe ende i pa riparuar n\u00eb Python 3. Gabimi lejon q\u00eb p\u00ebrmes nj\u00eb kodi t\u00eb ve\u00e7uar n\u00eb gjuh\u00ebn Python t\u00eb iniciohet qasja n\u00eb memorie t\u00eb liruar tashm\u00eb (Use-After-Free) n\u00eb CPython. Fillimisht, supozohej se","canonical_url":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/uyazvimost-v-python-pozvolyayushhaya-vyzvat-sistemnye-komandy-iz-izolirovannyh-skriptov","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sq_AL","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\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 Python, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0435 \u043a\u043e\u043c\u0430\u043d\u0434\u044b \u0438\u0437 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