{"id":105304,"date":"2022-10-13T21:36:48","date_gmt":"2022-10-13T19:36:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-besprovodnom-steke-yadra-linux-dopuskayushhie-udalyonnoe-vypolnenie-koda"},"modified":"2022-10-13T21:36:48","modified_gmt":"2022-10-13T19:36:48","slug":"uyazvimosti-v-besprovodnom-steke-yadra-linux-dopuskayushhie-udalyonnoe-vypolnenie-koda","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimosti-v-besprovodnom-steke-yadra-linux-dopuskayushhie-udalyonnoe-vypolnenie-koda","title":{"rendered":"Sebezhet\u0151s\u00e9gek a Linux kernel vezet\u00e9k n\u00e9lk\u00fcli verem\u00e9ben, amelyek t\u00e1voli k\u00f3dv\u00e9grehajt\u00e1st tesznek lehet\u0151v\u00e9","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A vezet\u00e9k n\u00e9lk\u00fcli stack-ben (mac80211) a Linux kernelben egy sor s\u00e9r\u00fcl\u00e9kenys\u00e9g ker\u00fclt felfedez\u00e9sre, amelyek k\u00f6z\u00fcl n\u00e9h\u00e1ny potenci\u00e1lisan lehet\u0151v\u00e9 teszi a puffert\u00falcsordul\u00e1st \u00e9s a t\u00e1voli k\u00f3dv\u00e9grehajt\u00e1st, amikor a hozz\u00e1f\u00e9r\u00e9si pont \u00e1ltal speci\u00e1lisan form\u00e1zott csomagokat k\u00fcldenek. A jav\u00edt\u00e1s jelenleg csak patch form\u00e1j\u00e1ban \u00e9rhet\u0151 el.     <\/p>\n<p>A t\u00e1mad\u00e1si lehet\u0151s\u00e9gek bemutat\u00e1s\u00e1ra p\u00e9ld\u00e1kat publik\u00e1ltak a puffert\u00falcsordul\u00e1st kiv\u00e1lt\u00f3 keretekr\u0151l, valamint egy eszk\u00f6zt a 802.11-es vezet\u00e9k n\u00e9lk\u00fcli stackbe t\u00f6rt\u00e9n\u0151 beilleszt\u00e9s\u00fckh\u00f6z. A s\u00e9r\u00fcl\u00e9kenys\u00e9gek nem f\u00fcggenek a haszn\u00e1lt vezet\u00e9k n\u00e9lk\u00fcli illeszt\u0151programokt\u00f3l. Felt\u00e9telezik, hogy a felfedezett probl\u00e9m\u00e1k kihaszn\u00e1lhat\u00f3k m\u0171k\u00f6d\u0151 exploitok l\u00e9trehoz\u00e1s\u00e1ra t\u00e1voli t\u00e1mad\u00e1sokhoz.  <\/p>\n<ul>\n<li class=\"l\"> CVE-2022-41674 \u2014 verem\u00e9ny-\u00e1tfut\u00e1s a cfg80211_update_notlisted_nontrans funkci\u00f3ban, amely lehet\u0151v\u00e9 teszi ak\u00e1r 256 byte \u00edr\u00e1s\u00e1t a heap ter\u00fcletre. A sebezhet\u0151s\u00e9g a Linux 5.1 kernelt\u0151l kezd\u0151d\u0151en jelenik meg, \u00e9s t\u00e1voli k\u00f3dfuttat\u00e1sra haszn\u00e1lhat\u00f3.\n<li class=\"l\"> CVE-2022-42719 \u2014 m\u00e1r felszabad\u00edtott mem\u00f3ria ter\u00fclet hozz\u00e1f\u00e9r\u00e9se (use-after-free) az MBSSID feldolgoz\u00f3 k\u00f3dj\u00e1ban. A sebezhet\u0151s\u00e9g a Linux 5.2 kernelt\u0151l kezd\u0151d\u0151en jelenik meg, \u00e9s t\u00e1voli k\u00f3dfuttat\u00e1sra haszn\u00e1lhat\u00f3.\n<li class=\"l\"> CVE-2022-42720 \u2014 m\u00e1r felszabad\u00edtott mem\u00f3ria ter\u00fclet hozz\u00e1f\u00e9r\u00e9se (use-after-free) a BSS (Basic Service Set) hivatkoz\u00e1s-sz\u00e1ml\u00e1l\u00f3 k\u00f3dj\u00e1ban. A sebezhet\u0151s\u00e9g a Linux 5.1 kernelt\u0151l kezd\u0151d\u0151en jelenik meg, \u00e9s t\u00e1voli k\u00f3dfuttat\u00e1sra haszn\u00e1lhat\u00f3.\n<li class=\"l\"> CVE-2022-42721 \u2014 a BSS lista megsemmis\u00edt\u00e9se, ami v\u00e9gtelen ciklust eredm\u00e9nyez. A sebezhet\u0151s\u00e9g a Linux 5.1 kernelt\u0151l kezd\u0151d\u0151en jelenik meg, \u00e9s szolg\u00e1ltat\u00e1smegtagad\u00e1st okozhat.\n<li class=\"l\"> CVE-2022-42722 \u2014 null pointer dereference a beacon keretek v\u00e9delmi k\u00f3dj\u00e1ban. A probl\u00e9ma szolg\u00e1ltat\u00e1smegtagad\u00e1sra haszn\u00e1lhat\u00f3.  <\/ul>\n<p>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57916\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u043e\u043c \u0441\u0442\u0435\u043a\u0435 (mac80211) \u044f\u0434\u0440\u0430 Linux \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430, \u0441\u0435\u0440\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f 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