{"id":90583,"date":"2020-08-03T01:42:25","date_gmt":"2020-08-02T23:42:25","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kriticheskaya-uyazvimost-v-wordpress-plagine-wpdiscuz-naschityvayushhem-80-tysyach-ustanovok"},"modified":"2020-08-03T01:42:25","modified_gmt":"2020-08-02T23:42:25","slug":"kriticheskaya-uyazvimost-v-wordpress-plagine-wpdiscuz-naschityvayushhem-80-tysyach-ustanovok","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/kriticheskaya-uyazvimost-v-wordpress-plagine-wpdiscuz-naschityvayushhem-80-tysyach-ustanovok","title":{"rendered":"Kritick\u00e1 zranitelnost v pluginu WordPress wpDiscuz, kter\u00fd m\u00e1 80 tis\u00edc instalac\u00ed","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>V pluginu WordPress <noindex><a rel=\"nofollow\" href=\"https:\/\/wordpress.org\/plugins\/wpdiscuz\/\">wpDiscuz<\/a><\/noindex>, kter\u00fd je nainstalov\u00e1n na v\u00edce ne\u017e 80 tis\u00edc\u00edch str\u00e1nk\u00e1ch, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.wordfence.com\/blog\/2020\/07\/critical-arbitrary-file-upload-vulnerability-patched-in-wpdiscuz-plugin\/\">byla odhalena<\/a><\/noindex> nebezpe\u010dn\u00e1 zranitelnost, kter\u00e1 umo\u017e\u0148uje bez autentizace nahr\u00e1t jak\u00fdkoli soubor na server. Tak\u00e9 je mo\u017en\u00e9 nahr\u00e1t PHP-soubory a dos\u00e1hnout spu\u0161t\u011bn\u00ed vlastn\u00edho k\u00f3du na serveru. Probl\u00e9mu jsou n\u00e1chyln\u00e9 verze od 7.0.0 do 7.0.4 v\u010detn\u011b. Zranitelnost byla odstran\u011bna v verzi 7.0.5.<\/p>\n<p>Plugin wpDiscuz umo\u017e\u0148uje pou\u017eit\u00ed AJAX pro dynamick\u00e9 odes\u00edl\u00e1n\u00ed koment\u00e1\u0159\u016f bez nutnosti znovu na\u010d\u00edtat str\u00e1nku. Zranitelnost vypl\u00fdv\u00e1 z nedostate\u010dn\u00e9ho zpracov\u00e1n\u00ed k\u00f3du pro kontrolu nahr\u00e1van\u00fdch typ\u016f soubor\u016f, kter\u00e9 se pou\u017e\u00edvaj\u00ed pro p\u0159ipojen\u00ed obr\u00e1zk\u016f k koment\u00e1\u0159\u016fm. Pro omezen\u00ed nahr\u00e1v\u00e1n\u00ed libovoln\u00fdch soubor\u016f byla vol\u00e1na funkce pro ur\u010den\u00ed typu MIME na z\u00e1klad\u011b obsahu, kterou bylo snadn\u00e9 obej\u00edt pro nahr\u00e1v\u00e1n\u00ed PHP soubor\u016f. P\u0159\u00edpona souboru nebyla omezena. Nap\u0159\u00edklad bylo mo\u017en\u00e9 nahr\u00e1t soubor myphpfile.php, p\u0159i\u010dem\u017e na za\u010d\u00e1tku bylo uvedeno sekvenc\u00ed 89 50 4E 47 0D 0A 1A 0A, kter\u00e1 identifikuje PNG obr\u00e1zky, a n\u00e1sledn\u011b um\u00edstit blok &#171;&lt;?php&#187; s PHP k\u00f3dem.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Zdroj: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53477\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 WordPress-\u043f\u043b\u0430\u0433\u0438\u043d\u0435 wpDiscuz, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d \u043d\u0430 \u0431\u043e\u043b\u0435\u0435 \u0447\u0435\u043c 80 \u0442\u044b\u0441\u044f\u0447\u0430\u0445 \u0441\u0430\u0439\u0442\u043e\u0432, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043e\u043f\u0430\u0441\u043d\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0431\u0435\u0437 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0437\u0430\u0433\u0440\u0443\u0437\u0438\u0442\u044c \u043b\u044e\u0431\u043e\u0439 \u0444\u0430\u0439\u043b \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440. \u0412 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u043c\u043e\u0436\u043d\u043e \u0437\u0430\u0433\u0440\u0443\u0437\u0438\u0442\u044c PHP-\u0444\u0430\u0439\u043b\u044b \u0438 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0435 \u043f\u043e\u0434\u0432\u0435\u0440\u0436\u0435\u043d\u044b \u0432\u0435\u0440\u0441\u0438\u0438 \u0441 7.0.0 \u043f\u043e 7.0.4 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0432 \u0432\u044b\u043f\u0443\u0441\u043a\u0435 7.0.5. \u041f\u043b\u0430\u0433\u0438\u043d wpDiscuz \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f AJAX \u0434\u043b\u044f [&hellip;]<\/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-90583","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- 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