{"id":100782,"date":"2021-07-16T22:22:59","date_gmt":"2021-07-16T20:23:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-ublock-origin-privodyashhaya-k-krahu-ili-ischerpaniyu-resursov"},"modified":"2021-07-16T22:22:59","modified_gmt":"2021-07-16T20:23:00","slug":"uyazvimost-v-ublock-origin-privodyashhaya-k-krahu-ili-ischerpaniyu-resursov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/uyazvimost-v-ublock-origin-privodyashhaya-k-krahu-ili-ischerpaniyu-resursov","title":{"rendered":"uBlock Originis avastatud haavatavus, mis p\u00f5hjustab kokkuvarisemise v\u00f5i ressursi ammendumise","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

uBlock Origini soovimatu sisu blokeerimise s\u00fcsteemis on avastatud haavatavus, mis v\u00f5ib p\u00f5hjustada s\u00fcsteemi kokkuvarisemise v\u00f5i m\u00e4lu kahanemise, kui navigeerida spetsiaalselt kujundatud URL-i kaudu, juhul kui see URL kuulub rangete blokeerimisseente alla («strict blocking»). Haavatavus ilmneb ainult otsese \u00fclemineku korral probleemsele URL-ile, n\u00e4iteks lingi kl\u00f5psamisel. <\/p>\n

Haavatavus on parandatud uBlock Origin 1.36.2 uuenduses. Sarnasel probleemile on vastuv\u00f5tlik ka uMatrixi lisand, kuid selle toetamine on l\u00f5petatud ning uuendusi enam ei v\u00e4ljastata. uMatrixis puuduvad kaitsemeetmed (alguses soovitati keelata k\u00f5ik ranged blokeerimisseente filtrid 'Assets' vahekaardilt, kuid see soovitus tunnistati ebapiisavaks ja probleemseks kasutajatele, kellel on oma blokeerimisreeglid). uMatrix, Pale Mooni projekti uMatrixi fork, on saanud haavatavuse parandamise 4.4.9 v\u00e4ljaandes. <\/p>\n

Ranget blokeerimisfiltrit m\u00e4\u00e4ratletakse tavaliselt tasemel of domains<\/a> ja t\u00e4hendab, et k\u00f5ik \u00fchendused on keelatud, isegi linki otse j\u00e4rgides. Haavatavus tuleneb sellest, et kui liikuda lehele, mis on rangelt blokeerimise filtrisse alluv, kuvatakse kasutajale hoiatusteade, mis sisaldab teavet blokeeritud ressursi kohta, sealhulgas URL-i ja p\u00e4ringu parameetreid. Probleem seisneb selles, et uBlock Origini t\u00f6\u00f6tlus anal\u00fc\u00fcsib p\u00e4ringu parameetreid rekursiivselt ja lisab need DOM-puusse, arvestamata s\u00fcgavust. <\/p>\n

Spetsiaalselt vormindatud URL-i t\u00f6\u00f6tlemisel uBlock Originis Chrome'i jaoks v\u00f5ib see p\u00f5hjustada brauseri lisa p\u00f6\u00f6rdumatut t\u00f5rget. T\u00f5rke korral j\u00e4\u00e4b kasutaja soovimatu sisu blokeerimiseta kuni lisa protsessi taask\u00e4ivitamiseni. Firefoxis on t\u00e4heldatud m\u00e4luturset.

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

\u0412 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u0435\u0436\u0435\u043b\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u043a\u043e\u043d\u0442\u0435\u043d\u0442\u0430 uBlock Origin \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u043a\u0440\u0430\u0445\u0430 \u0438\u043b\u0438 \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u0438 \u043d\u0430\u0432\u0438\u0433\u0430\u0446\u0438\u0438 \u043f\u043e \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u043c\u0443 URL, \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u043f\u043e\u0434\u043f\u0430\u0434\u0430\u043d\u0438\u044f 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