{"id":101561,"date":"2021-10-07T10:23:03","date_gmt":"2021-10-07T08:23:03","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-php-pozvolyayushhaya-obojti-ogranicheniya-zadannye-v-php-ini"},"modified":"2021-10-07T10:23:03","modified_gmt":"2021-10-07T08:23:03","slug":"uyazvimost-v-php-pozvolyayushhaya-obojti-ogranicheniya-zadannye-v-php-ini","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/uyazvimost-v-php-pozvolyayushhaya-obojti-ogranicheniya-zadannye-v-php-ini","title":{"rendered":"Zranite\u013enos\u0165 v PHP, ktor\u00e1 umo\u017e\u0148uje ob\u00eds\u0165 obmedzenia nastaven\u00e9 v php.ini","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Bol sa zverejnen\u00fd sp\u00f4sob obch\u00e1dzania obmedzen\u00ed v interpreteri PHP, ktor\u00e9 s\u00fa definovan\u00e9 pomocou direkt\u00edvy disable_functions a in\u00fdch nastaven\u00ed v php.ini. Pripome\u0148me, \u017ee direkt\u00edva disable_functions umo\u017e\u0148uje zak\u00e1za\u0165 pou\u017e\u00edvanie ur\u010dit\u00fdch vn\u00fatorn\u00fdch funkci\u00ed v skriptoch, napr\u00edklad m\u00f4\u017eete zak\u00e1za\u0165 \u201esystem, exec, passthru, popen, proc_open a shell_exec\u201c na zablokovanie volania extern\u00fdch programov alebo fopen na zak\u00e1zanie otv\u00e1rania s\u00faborov. <\/p>\n

Pozoruhodn\u00e9 je, \u017ee v navrhovanom exploit-e sa vyu\u017e\u00edva zranite\u013enos\u0165, o ktorej v\u00fdvoj\u00e1rom PHP bolo ozn\u00e1men\u00e9 pred viac ako 10 rokmi, no pova\u017eovali ju za nev\u00fdznamn\u00fd probl\u00e9m, ktor\u00fd neovplyv\u0148uje bezpe\u010dnos\u0165. Navrhovan\u00e1 met\u00f3da \u00fatoku je zalo\u017een\u00e1 na zmene hodn\u00f4t parametrov v pam\u00e4ti procesu a funguje vo v\u0161etk\u00fdch aktu\u00e1lnych verzi\u00e1ch PHP, po\u010d\u00ednaj\u00fac PHP 7.0 (\u00fatok je mo\u017en\u00fd aj na PHP 5.x, av\u0161ak vy\u017eaduje si zmeny v exploit-e). Exploit bol testovan\u00fd v r\u00f4znych konfigur\u00e1ci\u00e1ch Debian, Ubuntu, CentOS a FreeBSD s PHP vo forme cli, fpm a modulu pre apache2.
\n
Zdroj: 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 \u0432 \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440\u0435 PHP \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0439, \u0437\u0430\u0434\u0430\u043d\u043d\u044b\u0445 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u0434\u0438\u0440\u0435\u043a\u0442\u0438\u0432\u044b disable_functions \u0438 \u0434\u0440\u0443\u0433\u0438\u0445 \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043a \u0432 php.ini. \u041d\u0430\u043f\u043e\u043c\u043d\u0438\u043c, \u0447\u0442\u043e \u0434\u0438\u0440\u0435\u043a\u0442\u0438\u0432\u0430 disable_functions \u0434\u0430\u0451\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u043f\u0440\u0435\u0442\u0438\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0432 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[…]<\/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-101561","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\udd47Zranite\u013enos\u0165 v PHP, ktor\u00e1 umo\u017e\u0148uje ob\u00eds\u0165 obmedzenia nastaven\u00e9 v php.ini | ProHoster","description":"Bol zverejnen\u00fd sp\u00f4sob ob\u00eddenia obmedzen\u00ed v interpreteri PHP, ktor\u00e9 s\u00fa nastaven\u00e9 pomocou direkt\u00edvy disable_functions a in\u00fdch nastaven\u00ed v 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