{"id":104516,"date":"2022-06-27T21:36:37","date_gmt":"2022-06-27T19:36:37","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-openssl-3-0-4-privodyashhaya-k-udalyonnomu-povrezhdeniyu-pamyati-proczessa"},"modified":"2022-06-27T21:36:37","modified_gmt":"2022-06-27T19:36:37","slug":"uyazvimost-v-openssl-3-0-4-privodyashhaya-k-udalyonnomu-povrezhdeniyu-pamyati-proczessa","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/uyazvimost-v-openssl-3-0-4-privodyashhaya-k-udalyonnomu-povrezhdeniyu-pamyati-proczessa","title":{"rendered":"Zranite\u013enos\u0165 v OpenSSL 3.0.4, ktor\u00e1 sp\u00f4sobuje vzdialen\u00e9 po\u0161kodenie pam\u00e4te procesu.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V kryptografickej kni\u017enici OpenSSL bola odhalen\u00e1 zranite\u013enos\u0165 (CVE zatia\u013e nebol pridelen\u00fd), prostredn\u00edctvom ktorej m\u00f4\u017ee vzdialen\u00fd \u00fato\u010dn\u00edk po\u0161kodi\u0165 obsah pam\u00e4te procesu zaslan\u00edm \u0161peci\u00e1lne form\u00e1tovan\u00fdch \u00fadajov po\u010das nadv\u00e4zovania TLS spojenia. Zatia\u013e nie je jasn\u00e9, \u010di probl\u00e9m m\u00f4\u017ee vies\u0165 k vykonaniu k\u00f3du \u00fato\u010dn\u00edka a \u00faniku \u00fadajov z pam\u00e4te procesu, alebo je obmedzen\u00fd len na havarijn\u00e9 ukon\u010denie pr\u00e1ce. <\/p>\n

Zranite\u013enos\u0165 sa prejavuje vo vydan\u00ed OpenSSL 3.0.4, publikovanom 21. j\u00fana, a je sp\u00f4soben\u00e1 nespr\u00e1vnym opraven\u00edm chyby v k\u00f3de, v d\u00f4sledku ktor\u00e9ho m\u00f4\u017ee by\u0165 prep\u00edsan\u00fdch alebo pre\u010d\u00edtan\u00fdch a\u017e 8192 bajtov \u00fadajov mimo pridelen\u00e9ho bufferu. Vyu\u017eitie zranite\u013enosti je mo\u017en\u00e9 iba na syst\u00e9moch x86_64 s podporou in\u0161trukci\u00ed AVX512. <\/p>\n

Tak\u00e9 odvetvia OpenSSL ako BoringSSL a LibreSSL, ako aj vetva OpenSSL 1.1.1, nie s\u00fa tejto problematiky vystaven\u00e9. Oprava je zatia\u013e dostupn\u00e1 iba vo forme patchu. V najhor\u0161om pr\u00edpade m\u00f4\u017ee by\u0165 probl\u00e9m nebezpe\u010dnej\u0161\u00ed ako zranite\u013enos\u0165 Heartbleed, ale \u00farove\u0148 hrozby zni\u017euje skuto\u010dnos\u0165, \u017ee zranite\u013enos\u0165 sa prejavuje iba vo vydan\u00ed OpenSSL 3.0.4, zatia\u013e \u010do mnoh\u00e9 distrib\u00facie na\u010falej predvolene dod\u00e1vaj\u00fa vetvu 1.1.1 alebo e\u0161te nestihli vytvori\u0165 aktualiz\u00e1cie bal\u00edkov s verziou 3.0.4.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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