{"id":75280,"date":"2020-03-25T01:42:03","date_gmt":"2020-03-24T23:42:03","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-memcached-1-6-2-s-ustraneniem-uyazvimosti"},"modified":"2020-03-25T01:42:03","modified_gmt":"2020-03-24T23:42:03","slug":"obnovlenie-memcached-1-6-2-s-ustraneniem-uyazvimosti","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/obnovlenie-memcached-1-6-2-s-ustraneniem-uyazvimosti","title":{"rendered":"Opdatering af Memcached 1.6.2 med s\u00e5rbarhedsreparation","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Offentliggjort<\/a><\/noindex> opdatering af systemet til data caching i RAM Memcached 1.6.2<\/a><\/noindex>, hvor ASLR i programmer med setuid-flaget og bestemme adressefordelingen i de indl\u00e6ste biblioteker gennem manipulation af milj\u00f8variablen LD_PREFER_MAP_32BIT_EXEC.<\/a><\/noindex>, der tillader at initere en crash af arbejdsprocessen ved at sende en specielt formateret anmodning. S\u00e5rbarheden optr\u00e6der fra version 1.6.0. Som en sikkerhedsl\u00f8sning kan man deaktivere det bin\u00e6re protokol for eksterne anmodninger ved at starte med muligheden «-B ascii».<\/p>\n

Problemet skyldes en fejl i koden<\/a><\/noindex> parsing af den bin\u00e6re protokoloversigt, relateret til en forkert bestemmelse af st\u00f8rrelsen p\u00e5 de data, der kopieres til bufferen ved kald af funktionen memcpy (st\u00f8rrelsen bestemmes baseret p\u00e5 parametret angivet i anmodningens oversigt). Gennem manipulation af v\u00e6rdien af parametret i den bin\u00e6re protokoloversigt kan en angriber med adgang til netv\u00e6rksporten til Memcached initiere et buffer overflow, hvilket f\u00f8rer til en procesfejl.<\/p>\n

<\/a><\/noindex><\/p>\n

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

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