{"id":477282,"date":"2023-08-09T09:10:23","date_gmt":"2023-08-09T09:10:23","guid":{"rendered":""},"modified":"2023-11-29T15:03:54","modified_gmt":"2023-11-29T15:03:54","slug":"format-string-attack","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/kr\/wiki\/format-string-attack\/","title":{"rendered":"\ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9"},"content":{"rendered":"<p>\ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc740 \ucef4\ud4e8\ud130 \ud504\ub85c\uadf8\ub798\ubc0d\uc5d0\uc11c \ubc1c\uc0dd\ud558\ub294 \uc77c\uc885\uc758 \ubcf4\uc548 \ucde8\uc57d\uc810\uc785\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \uacf5\uaca9\uc790\ub294 \ud504\ub85c\uadf8\ub7a8\uc774 \ud615\uc2dd\ud654\ub41c \uc785\ub825\/\ucd9c\ub825 \uae30\ub2a5\uc744 \ucc98\ub9ac\ud558\ub294 \ubc29\uc2dd\uc744 \uc545\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uacf5\uaca9\uc790\ub294 \uc774 \ucde8\uc57d\uc810\uc744 \uc774\uc6a9\ud558\uc5ec \ubbfc\uac10\ud55c \ub370\uc774\ud130\ub97c \uc77d\uac70\ub098, \uba54\ubaa8\ub9ac \ub0b4\uc6a9\uc744 \uc218\uc815\ud558\uac70\ub098, \ub300\uc0c1 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc784\uc758 \ucf54\ub4dc\ub97c \uc2e4\ud589\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4. \ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc740 \uc2dc\uc2a4\ud15c \ubb34\uacb0\uc131\uacfc \uae30\ubc00\uc131\uc744 \uc190\uc0c1\uc2dc\ud0ac \uac00\ub2a5\uc131\uc774 \uc788\uae30 \ub54c\ubb38\uc5d0 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c\uc790\uc640 \uc2dc\uc2a4\ud15c \uad00\ub9ac\uc790\uc5d0\uac8c \uc911\uc694\ud55c \uad00\uc2ec\uc0ac\uc600\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>Format String Attack\uc758 \uc720\ub798\uc640 \ucd5c\ucd08 \uc5b8\uae09\uc758 \uc5ed\uc0ac<\/h2>\n<p>\ud615\uc2dd \ubb38\uc790\uc5f4 \ucde8\uc57d\uc810\uc758 \uac1c\ub150\uc740 1990\ub144\ub300 \ud6c4\ubc18\uc5d0 \ucc98\uc74c\uc73c\ub85c \ubc1d\ud600\uc84c\uc2b5\ub2c8\ub2e4. \uc774\ub294 Kostya Kortchinsky\uac00 2000\ub144\uc5d0 \ubc1c\ud45c\ud55c &quot;\ud615\uc2dd \ubb38\uc790\uc5f4 \ucde8\uc57d\uc810 \uacf5\uaca9&quot;\uc774\ub77c\ub294 \uc81c\ubaa9\uc758 \ub17c\ubb38\uc744 \ud1b5\ud574 \ub300\uc911\ud654\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \uc774 \ubb38\uc11c\uc5d0\uc11c\ub294 \uc774 \ucde8\uc57d\uc810\uc758 \uc545\uc6a9\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \ub17c\uc758\ud558\uace0 \uc2dc\uc2a4\ud15c\uc5d0 \ubbf8\uce58\ub294 \uc7a0\uc7ac\uc801\uc778 \uc601\ud5a5\uc744 \ubcf4\uc5ec\uc8fc\uc5c8\uc2b5\ub2c8\ub2e4. \uadf8 \uc774\ud6c4\ub85c \ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc774 \uad11\ubc94\uc704\ud558\uac8c \uc5f0\uad6c\ub418\uc5b4 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c\uc5d0 \ub300\ud55c \uc774\ud574\uac00 \ud5a5\uc0c1\ub418\uace0 \ubcf4\uc548 \uad00\ud589\uc774 \uac1c\uc120\ub418\uc5c8\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc5d0 \ub300\ud55c \uc790\uc138\ud55c \uc815\ubcf4<\/h2>\n<p>\ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc740 \uacf5\uaca9\uc790\uac00 \ud615\uc2dd\ud654\ub41c \uc785\ub825\/\ucd9c\ub825 \ud568\uc218\uc5d0\uc11c \ud615\uc2dd \ubb38\uc790\uc5f4 \ub9e4\uac1c \ubcc0\uc218\ub97c \uc81c\uc5b4\ud560 \uc218 \uc788\uc744 \ub54c \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uae30\ub2a5\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4. <code data-no-translation=\"\">printf()<\/code> \uadf8\ub9ac\uace0 <code data-no-translation=\"\">sprintf()<\/code>\ub294 \ub370\uc774\ud130 \ud615\uc2dd\uc744 \uc9c0\uc815\ud558\uace0 \uc778\uc1c4\ud558\ub294 \ub370 \ub110\ub9ac \uc0ac\uc6a9\ub429\ub2c8\ub2e4. C \ubc0f C++\uc640 \uac19\uc740 \uc5b8\uc5b4\uc5d0\uc11c\ub294 \uac1c\ubc1c\uc790\uac00 \uc790\ub9ac \ud45c\uc2dc\uc790\ub97c \uc9c0\uc815\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4(\uc608: <code data-no-translation=\"\">%s<\/code> \ubb38\uc790\uc5f4\uc758 \uacbd\uc6b0, <code data-no-translation=\"\">%d<\/code> \uc815\uc218\uc758 \uacbd\uc6b0) \ubc0f \ud574\ub2f9 \uac12\uc774 \ud45c\uc2dc\ub429\ub2c8\ub2e4. \uc774 \ucde8\uc57d\uc810\uc740 \ud504\ub85c\uadf8\ub7a8\uc774 \uc801\uc808\ud55c \uc720\ud6a8\uc131 \uac80\uc0ac \uc5c6\uc774 \uc0ac\uc6a9\uc790 \uc81c\uc5b4 \ub370\uc774\ud130\ub97c \ud615\uc2dd \ubb38\uc790\uc5f4\ub85c \uc804\ub2ec\ud558\uc5ec \uc758\ub3c4\ud558\uc9c0 \uc54a\uc740 \uacb0\uacfc\ub97c \ucd08\ub798\ud560 \ub54c \ubc1c\uc0dd\ud569\ub2c8\ub2e4.<\/p>\n<h2>Format String Attack\uc758 \ub0b4\ubd80 \uad6c\uc870\uc640 \uc791\ub3d9 \ubc29\uc2dd<\/h2>\n<p>\ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc774 \uc5b4\ub5bb\uac8c \uc791\ub3d9\ud558\ub294\uc9c0 \uc774\ud574\ud558\ub824\uba74 \ud615\uc2dd\ud654\ub41c \uc785\ub825\/\ucd9c\ub825 \uae30\ub2a5\uc758 \ub0b4\ubd80 \uc791\ub3d9 \ubc29\uc2dd\uc744 \ud30c\uc545\ud558\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4. C\uc640 \uac19\uc740 \uc5b8\uc5b4\uc5d0\uc11c \ud615\uc2dd\ud654\ub41c \uc778\uc1c4 \ud568\uc218\ub294 \uc2a4\ud0dd\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc804\ub2ec\ub41c \uc778\uc218\uc5d0 \uc561\uc138\uc2a4\ud569\ub2c8\ub2e4. \uac1c\ubc1c\uc790\uac00 \ud615\uc2dd \ubb38\uc790\uc5f4\uc744 \uc81c\uacf5\ud558\uba74 \ud568\uc218\ub294 \uc774\ub97c \ubc18\ubcf5\ud558\uc5ec \ud615\uc2dd \uc9c0\uc815\uc790\ub97c \ucc3e\uc2b5\ub2c8\ub2e4(\uc608: <code data-no-translation=\"\">%s<\/code>, <code data-no-translation=\"\">%d<\/code>). \ubc1c\uacac\ub41c \uac01 \uc9c0\uc815\uc790\uc5d0 \ub300\ud574 \ud568\uc218\ub294 \uc2a4\ud0dd\uc5d0 \ud574\ub2f9 \uc778\uc218\uac00 \uc788\uc744 \uac83\uc73c\ub85c \uc608\uc0c1\ud569\ub2c8\ub2e4.<\/p>\n<p>\ucde8\uc57d\ud55c \ud504\ub85c\uadf8\ub7a8\uc5d0\uc11c \uacf5\uaca9\uc790\uac00 \ud615\uc2dd \ubb38\uc790\uc5f4\uc744 \uc81c\uc5b4\ud560 \uc218 \uc788\uc73c\uba74 \ub2e4\uc74c\uc744 \uc545\uc6a9\ud558\uc5ec \ud504\ub85c\uadf8\ub7a8\uc758 \uba54\ubaa8\ub9ac\ub97c \uc870\uc791\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<ol>\n<li><strong>\ub3c5\uc11c \uae30\uc5b5<\/strong>: \ub2e4\uc74c\uacfc \uac19\uc740 \ud615\uc2dd \uc9c0\uc815\uc790\ub97c \uc0ac\uc6a9\ud558\uc5ec <code data-no-translation=\"\">%x<\/code> \ub610\ub294 <code data-no-translation=\"\">%s<\/code>, \uacf5\uaca9\uc790\ub294 \ubbfc\uac10\ud55c \uc815\ubcf4\uac00 \ud3ec\ud568\ub420 \uc218 \uc788\ub294 \uc2a4\ud0dd\uc774\ub098 \uae30\ud0c0 \uba54\ubaa8\ub9ac \uc601\uc5ed\uc758 \ub0b4\uc6a9\uc744 \uc720\ucd9c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\uc4f0\uae30 \uba54\ubaa8\ub9ac<\/strong>: \ub2e4\uc74c\uacfc \uac19\uc740 \ud615\uc2dd \uc9c0\uc815\uc790 <code data-no-translation=\"\">%n<\/code> \uacf5\uaca9\uc790\uac00 \ud574\ub2f9 \uc778\uc218\uac00 \uac00\ub9ac\ud0a4\ub294 \uba54\ubaa8\ub9ac \uc8fc\uc18c\uc5d0 \ub370\uc774\ud130\ub97c \uc4f8 \uc218 \uc788\ub3c4\ub85d \ud5c8\uc6a9\ud569\ub2c8\ub2e4. \uc774\ub294 \ubcc0\uc218, \ud568\uc218 \ud3ec\uc778\ud130 \ub610\ub294 \ud504\ub85c\uadf8\ub7a8 \ucf54\ub4dc\ub97c \uc218\uc815\ud558\ub294 \ub370 \uc545\uc6a9\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\uc784\uc758\uc758 \ucf54\ub4dc \uc2e4\ud589<\/strong>: \uacf5\uaca9\uc790\uac00 \ud615\uc2dd \ubb38\uc790\uc5f4\uc744 \uc81c\uc5b4\ud558\uace0 \uc62c\ubc14\ub978 \uc778\uc218\ub97c \uc81c\uacf5\ud560 \uc218 \uc788\ub294 \uacbd\uc6b0 \ub2e4\uc74c\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc784\uc758\uc758 \ucf54\ub4dc\ub97c \uc2e4\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. <code data-no-translation=\"\">%n<\/code> \ud568\uc218 \ud3ec\uc778\ud130\uc5d0 \uc4f4 \ub2e4\uc74c \uc2e4\ud589\uc744 \ud2b8\ub9ac\uac70\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n<h2>Format String Attack\uc758 \uc8fc\uc694 \ud2b9\uc9d5 \ubd84\uc11d<\/h2>\n<p>\ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc758 \uc8fc\uc694 \ud2b9\uc9d5\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<ol>\n<li><strong>\ud615\uc2dd \ubb38\uc790\uc5f4 \uc81c\uc5b4<\/strong>: \uacf5\uaca9\uc790\ub294 \ucd9c\ub825 \ud615\uc2dd\uc744 \uacb0\uc815\ud558\uace0 \uba54\ubaa8\ub9ac \uc561\uc138\uc2a4\ub97c \uc870\uc791\ud560 \uc218 \uc788\ub294 \ud615\uc2dd \ubb38\uc790\uc5f4\uc744 \uc81c\uc5b4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\uc2a4\ud0dd \uae30\ubc18 \uacf5\uaca9<\/strong>: \ud615\uc2dd\ud654\ub41c \uc785\ub825\/\ucd9c\ub825 \ud568\uc218\uac00 \uc778\uc218\uc5d0 \uc561\uc138\uc2a4\ud558\ub294 \ub370 \uc2a4\ud0dd\uc744 \uc0ac\uc6a9\ud558\ubbc0\ub85c \ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \uc2a4\ud0dd\uc744 \ub300\uc0c1\uc73c\ub85c \ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\uae30\uc5b5 \uc870\uc791<\/strong>: \uacf5\uaca9\uc790\ub294 \ud615\uc2dd \uc9c0\uc815\uc790\ub97c \ud1b5\ud574 \uba54\ubaa8\ub9ac \uc8fc\uc18c\ub97c \uc77d\uac70\ub098 \uc4f8 \uc218 \uc788\uc73c\uba70, \uc774\ub294 \uc7a0\uc7ac\uc801\uc73c\ub85c \uc815\ubcf4 \uacf5\uac1c \ub610\ub294 \ucf54\ub4dc \uc2e4\ud589\uc73c\ub85c \uc774\uc5b4\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ol>\n<h2>\ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc758 \uc720\ud615<\/h2>\n<p>\ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc740 \ub450 \uac00\uc9c0 \uc8fc\uc694 \uc720\ud615\uc73c\ub85c \ubd84\ub958\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<ol>\n<li><strong>\uacf5\uaca9 \uc77d\uae30<\/strong>: \uc774\ub7ec\ud55c \uacf5\uaca9\uc740 \ud615\uc2dd \uc9c0\uc815\uc790\ub97c \uc545\uc6a9\ud558\uc5ec \ud504\ub85c\uadf8\ub7a8 \uba54\ubaa8\ub9ac\uc5d0\uc11c \uc2a4\ud0dd \uc8fc\uc18c\ub098 \uc554\ud638 \ub370\uc774\ud130\uc640 \uac19\uc740 \uc911\uc694\ud55c \uc815\ubcf4\ub97c \uc77d\ub294 \ub370 \uc911\uc810\uc744 \ub461\ub2c8\ub2e4.<\/li>\n<li><strong>\uc4f0\uae30 \uacf5\uaca9<\/strong>: \uc774\ub7ec\ud55c \uacf5\uaca9\uc758 \ubaa9\uc801\uc740 \ud615\uc2dd \uc9c0\uc815\uc790\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud2b9\uc815 \uba54\ubaa8\ub9ac \uc8fc\uc18c\uc5d0 \ub370\uc774\ud130\ub97c \uae30\ub85d\ud568\uc73c\ub85c\uc368 \uba54\ubaa8\ub9ac\ub97c \uc870\uc791\ud568\uc73c\ub85c\uc368 \uacf5\uaca9\uc790\uac00 \ubcc0\uc218\ub098 \ud568\uc218 \ud3ec\uc778\ud130\ub97c \uc218\uc815\ud560 \uc218 \uc788\ub3c4\ub85d \ud558\ub294 \uac83\uc785\ub2c8\ub2e4.<\/li>\n<\/ol>\n<p>\ub2e4\uc74c\uc740 \ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9 \uc720\ud615\uc744 \uc694\uc57d\ud55c \ud45c\uc785\ub2c8\ub2e4.<\/p>\n<table>\n<thead>\n<tr>\n<th>\uacf5\uaca9 \uc720\ud615<\/th>\n<th>\uc124\uba85<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\uacf5\uaca9 \uc77d\uae30<\/td>\n<td>\ud615\uc2dd \uc9c0\uc815\uc790\ub97c \ud65c\uc6a9\ud558\uc5ec \uba54\ubaa8\ub9ac \uc77d\uae30<\/td>\n<\/tr>\n<tr>\n<td>\uc4f0\uae30 \uacf5\uaca9<\/td>\n<td>\ud615\uc2dd \uc9c0\uc815\uc790\ub97c \ud65c\uc6a9\ud558\uc5ec \uba54\ubaa8\ub9ac \uc4f0\uae30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Format String Attack\uc758 \ud65c\uc6a9\ubc29\ubc95\uacfc \ubb38\uc81c\uc810 \ubc0f \ud574\uacb0\ubc29\ubc95<\/h2>\n<h3>\ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95<\/h3>\n<p>\uacf5\uaca9\uc790\ub294 \ub2e4\uc74c\uc744 \ud3ec\ud568\ud55c \ub2e4\uc591\ud55c \uc2dc\ub098\ub9ac\uc624\uc5d0\uc11c \ud615\uc2dd \ubb38\uc790\uc5f4 \ucde8\uc57d\uc810\uc744 \uc545\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<ol>\n<li><strong>\uc6f9 \uc560\ud50c\ub9ac\ucf00\uc774\uc158<\/strong>: \uc6f9 \uc751\uc6a9 \ud504\ub85c\uadf8\ub7a8\uc774 \uc801\uc808\ud55c \uc720\ud6a8\uc131 \uac80\uc0ac \uc5c6\uc774 \uc0ac\uc6a9\uc790 \uc81c\uacf5 \ub370\uc774\ud130\ub97c \ud615\uc2dd \ubb38\uc790\uc5f4\ub85c \uc0ac\uc6a9\ud558\ub294 \uacbd\uc6b0 \uacf5\uaca9\uc790\ub294 \uc774\ub97c \uc545\uc6a9\ud558\uc5ec \uc751\uc6a9 \ud504\ub85c\uadf8\ub7a8\uc774\ub098 \uae30\ubcf8 \uc11c\ubc84\ub97c \uc190\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\uba85\ub839\uc904 \uc778\ud130\ud398\uc774\uc2a4<\/strong>: \uba85\ub839\uc904 \uc778\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud615\uc2dd \ubb38\uc790\uc5f4\uc744 \uad6c\uc131\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc740 \uc0ac\uc6a9\uc790 \uc785\ub825\uc758 \uc720\ud6a8\uc131\uc744 \uac80\uc0ac\ud558\uc9c0 \uc54a\uc73c\uba74 \uacf5\uaca9\uc744 \ubc1b\uae30 \uc27d\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\ub85c\uae45 \uba54\ucee4\ub2c8\uc998<\/strong>: \ub85c\uae45 \uba54\ucee4\ub2c8\uc998\uc758 \ud615\uc2dd \ubb38\uc790\uc5f4 \ucde8\uc57d\uc810\uc740 \uacf5\uaca9\uc790\uc5d0\uac8c \uc2dc\uc2a4\ud15c\uc5d0 \ub300\ud55c \uadc0\uc911\ud55c \uc815\ubcf4\ub97c \uc81c\uacf5\ud558\uace0 \ucd94\uac00 \uacf5\uaca9\uc744 \uc6a9\uc774\ud558\uac8c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ol>\n<h3>\ubb38\uc81c \ubc0f \ud574\uacb0 \ubc29\ubc95<\/h3>\n<ol>\n<li><strong>\ubd88\ucda9\ubd84\ud55c \uc785\ub825 \uac80\uc99d<\/strong>: \ud615\uc2dd \ubb38\uc790\uc5f4 \ucde8\uc57d\uc810\uc758 \uc8fc\uc694 \uc6d0\uc778\uc740 \ubd80\uc801\uc808\ud55c \uc785\ub825 \uc720\ud6a8\uc131 \uac80\uc0ac\uc785\ub2c8\ub2e4. \uac1c\ubc1c\uc790\ub294 \uc0ac\uc6a9\uc790 \uc81c\uc5b4 \uc785\ub825\uc744 \ud615\uc2dd \ubb38\uc790\uc5f4\ub85c \uc0ac\uc6a9\ud558\uae30 \uc804\uc5d0 \uc720\ud6a8\uc131\uc744 \uac80\uc0ac\ud574\uc57c \ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\ud615\uc2dd \ubb38\uc790\uc5f4\uc758 \uc81c\ud55c\ub41c \uc0ac\uc6a9<\/strong>: \uac1c\ubc1c\uc790\ub294 \uac00\ub2a5\ud558\uba74 \uc0ac\uc6a9\uc790\uac00 \uc81c\uc5b4\ud558\ub294 \ub370\uc774\ud130\uc5d0 \ud615\uc2dd \ubb38\uc790\uc5f4\uc744 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc544\uc57c \ud569\ub2c8\ub2e4. \ub300\uc2e0 \uc5c4\uaca9\ud55c \uc785\ub825 \uac80\uc0ac\ub97c \ud1b5\ud574 \ubb38\uc790\uc5f4 \uc5f0\uacb0\uc774\ub098 \ud615\uc2dd \uc9c0\uc815 \ub77c\uc774\ube0c\ub7ec\ub9ac\uc640 \uac19\uc740 \ubcf4\ub2e4 \uc548\uc804\ud55c \ub300\uc548\uc744 \uc0ac\uc6a9\ud558\ub294 \uac83\uc744 \uace0\ub824\ud574\ubcf4\uc138\uc694.<\/li>\n<li><strong>\ucef4\ud30c\uc77c\ub7ec \ubcf4\uc548 \uae30\ub2a5<\/strong>: \ucd5c\uc2e0 \ucef4\ud30c\uc77c\ub7ec\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ubcf4\uc548 \uba54\ucee4\ub2c8\uc998\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. <code data-no-translation=\"\">-fstack-protector<\/code> \ud615\uc2dd \ubb38\uc790\uc5f4 \ucde8\uc57d\uc810\uc744 \ud0d0\uc9c0\ud558\uace0 \ubc29\uc9c0\ud558\uae30 \uc704\ud55c GCC\uc758 \uc635\uc158\uc785\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud558\uba74 \uc704\ud5d8\uc744 \uc644\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ol>\n<h2>\uc8fc\uc694 \ud2b9\uc9d5 \ubc0f \uc720\uc0ac \uc6a9\uc5b4\uc640\uc758 \ube44\uad50<\/h2>\n<table>\n<thead>\n<tr>\n<th>\uc6a9\uc5b4<\/th>\n<th>\uc124\uba85<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9<\/td>\n<td>\ud615\uc2dd \uc9c0\uc815\uc790\ub97c \ud65c\uc6a9\ud558\uc5ec \uba54\ubaa8\ub9ac \uc870\uc791<\/td>\n<\/tr>\n<tr>\n<td>\ubc84\ud37c \uc624\ubc84 \ud50c\ub85c\uc6b0<\/td>\n<td>\ubc84\ud37c \uacbd\uacc4\ub97c \ub118\uc5b4\uc11c \ub370\uc774\ud130 \uc4f0\uae30<\/td>\n<\/tr>\n<tr>\n<td>SQL \uc8fc\uc785<\/td>\n<td>\uc545\uc758\uc801\uc778 \uc785\ub825\uc73c\ub85c SQL \ucffc\ub9ac \uc545\uc6a9<\/td>\n<\/tr>\n<tr>\n<td>\uad50\ucc28 \uc0ac\uc774\ud2b8 \uc2a4\ud06c\ub9bd\ud305<\/td>\n<td>\uc6f9 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \uc545\uc131 \uc2a4\ud06c\ub9bd\ud2b8 \uc0bd\uc785<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uacfc \uae30\ud0c0 \ucde8\uc57d\uc810 \uc0ac\uc774\uc5d0\ub294 \uba87 \uac00\uc9c0 \uc720\uc0ac\uc810\uc774 \uc788\uc9c0\ub9cc \uc545\uc6a9 \ubc29\ubc95, \ub300\uc0c1 \ubc0f \uacb0\uacfc\ub294 \ud06c\uac8c \ub2e4\ub985\ub2c8\ub2e4.<\/p>\n<h2>Format String Attack\uc5d0 \ub300\ud55c \uc804\ub9dd\uacfc \ubbf8\ub798\uae30\uc220<\/h2>\n<p>\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c \uad00\ud589\uc774 \uac1c\uc120\ub428\uc5d0 \ub530\ub77c \uac1c\ubc1c\uc790\ub294 \ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uacfc \uac19\uc740 \ubcf4\uc548 \ucde8\uc57d\uc131\uc5d0 \ub300\ud574 \ub354 \ub9ce\uc774 \uc778\uc2dd\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \ubcf4\uc548 \ucf54\ub529 \ud45c\uc900, \uc790\ub3d9\ud654\ub41c \ucf54\ub4dc \ubd84\uc11d \ub3c4\uad6c \ubc0f \uc815\uae30 \ubcf4\uc548 \uac10\uc0ac\uc758 \ub3c4\uc785\uc73c\ub85c \uc774\ub7ec\ud55c \ucde8\uc57d\uc810\uc758 \uc218\ub294 \uc2dc\uac04\uc774 \uc9c0\ub0a8\uc5d0 \ub530\ub77c \uac10\uc18c\ud560 \uac83\uc73c\ub85c \uc608\uc0c1\ub429\ub2c8\ub2e4.<\/p>\n<p>\ub610\ud55c Rust\uc640 \uac19\uc740 \uba54\ubaa8\ub9ac \uc548\uc804 \uae30\ub2a5\uc774 \ub0b4\uc7a5\ub41c \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\ub97c \uac1c\ubc1c\ud558\uba74 \ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc5d0 \ub300\ud55c \ucd94\uac00 \ubcf4\ud638 \uacc4\uce35\uc744 \uc81c\uacf5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\ud504\ub85d\uc2dc \uc11c\ubc84\ub97c \uc0ac\uc6a9\ud558\uac70\ub098 \ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uacfc \uc5f0\uacb0\ud558\ub294 \ubc29\ubc95<\/h2>\n<p>OneProxy\uc5d0\uc11c \uc81c\uacf5\ud558\ub294 \uac83\uacfc \uac19\uc740 \ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc744 \uc644\ud654\ud558\ub294 \uc5ed\ud560\uc744 \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \ud074\ub77c\uc774\uc5b8\ud2b8\uc640 \ub300\uc0c1 \uc11c\ubc84 \uac04\uc758 \uc911\uac1c\uc790 \uc5ed\ud560\uc744 \ud558\uc5ec \ub4e4\uc5b4\uc624\ub294 \uc694\uccad\uc744 \uac80\uc0ac\ud558\uace0 \ud544\ud130\ub9c1\ud560 \uc218 \uc788\ub3c4\ub85d \ud569\ub2c8\ub2e4. \ud504\ub85d\uc2dc \uc11c\ubc84 \uc218\uc900\uc5d0\uc11c \ubcf4\uc548 \uc870\uce58\ub97c \uad6c\ud604\ud558\uba74 \uc7a0\uc7ac\uc801\uc778 \ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc744 \ub300\uc0c1 \uc11c\ubc84\uc5d0 \ub3c4\ub2ec\ud558\uae30 \uc804\uc5d0 \ucc28\ub2e8\ud558\uace0 \ucc28\ub2e8\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uad6c\uc131\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<ol>\n<li><strong>\uc0ac\uc6a9\uc790 \uc785\ub825 \ud544\ud130\ub9c1<\/strong>: \ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \uc0ac\uc6a9\uc790 \uc785\ub825\uc744 \ub300\uc0c1 \uc11c\ubc84\ub85c \uc804\ub2ec\ud558\uae30 \uc804\uc5d0 \uc720\ud6a8\uc131\uc744 \uac80\uc0ac\ud558\uc5ec \uc545\uc131 \ud615\uc2dd \ubb38\uc790\uc5f4\uc774 \ucde8\uc57d\ud55c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \ub3c4\ub2ec\ud558\ub294 \uac83\uc744 \ubc29\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\uc6f9 \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \ubc29\ud654\ubcbd<\/strong>: \uace0\uae09 \ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \ud615\uc2dd \ubb38\uc790\uc5f4 \ucde8\uc57d\uc810\uc5d0 \ub300\ud55c \ubcf4\ud638\ub97c \ud3ec\ud568\ud558\ub294 WAF(\uc6f9 \uc751\uc6a9 \ud504\ub85c\uadf8\ub7a8 \ubc29\ud654\ubcbd) \uae30\ub2a5\uc744 \ud1b5\ud569\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\ub85c\uae45 \ubc0f \ubaa8\ub2c8\ud130\ub9c1<\/strong>: \ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \ub4e4\uc5b4\uc624\ub294 \uc694\uccad\uc744 \uae30\ub85d\ud558\uace0 \ubaa8\ub2c8\ud130\ub9c1\ud558\uc5ec \uc7a0\uc7ac\uc801\uc778 \ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9 \uc2dc\ub3c4\ub97c \uac10\uc9c0\ud558\uace0 \ubd84\uc11d\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ol>\n<h2>\uad00\ub828\ub41c \ub9c1\ud06c\ub4e4<\/h2>\n<p>\ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc5d0 \ub300\ud55c \uc790\uc138\ud55c \ub0b4\uc6a9\uc744 \ubcf4\ub824\uba74 \ub2e4\uc74c \ub9ac\uc18c\uc2a4\ub97c \uc0b4\ud3b4\ubcf4\uc138\uc694.<\/p>\n<ol>\n<li><a href=\"https:\/\/www.owasp.org\/images\/2\/26\/OWASPAppSecDC2006-MitjaK.pdf\" target=\"_new\" rel=\"noopener nofollow\">\ud615\uc2dd \ubb38\uc790\uc5f4 \ucde8\uc57d\uc810 \uc545\uc6a9<\/a> \u2013 OWASP AppSec DC 2006\uc5d0\uc11c Mitja Kolsek \ubc0f Kostya Kortchinsky\uc758 \ud504\ub808\uc820\ud14c\uc774\uc158.<\/li>\n<li><a href=\"https:\/\/crypto.stanford.edu\/cs155\/papers\/formatstring-1.2.pdf\" target=\"_new\" rel=\"noopener nofollow\">\ud615\uc2dd \ubb38\uc790\uc5f4 \ubc84\uadf8 \u2013 \uccab \ubc88\uc9f8 \uc0b4\ud3b4\ubcf4\uae30<\/a> \u2013 \ud615\uc2dd \ubb38\uc790\uc5f4 \ucde8\uc57d\uc810\uc744 \uc2ec\uce35\uc801\uc73c\ub85c \ud0d0\uad6c\ud558\ub294 Aleph One\uc758 \ub17c\ubb38\uc785\ub2c8\ub2e4.<\/li>\n<li><a href=\"https:\/\/owasp.org\/www-project-top-ten\/\" target=\"_new\" rel=\"noopener nofollow\">OWASP \uc0c1\uc704 10\uc704<\/a> \u2013 \ud615\uc2dd \ubb38\uc790\uc5f4 \ucde8\uc57d\uc810\uc744 \ud3ec\ud568\ud558\ub294 OWASP\uc758 \uc6f9 \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \ubcf4\uc548 \uc704\ud5d8 \uc0c1\uc704 10\uac1c \ubaa9\ub85d\uc785\ub2c8\ub2e4.<\/li>\n<\/ol>\n<p>\uacb0\ub860\uc801\uc73c\ub85c \ud615\uc2dd \ubb38\uc790\uc5f4 \uacf5\uaca9\uc740 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc2dc\uc2a4\ud15c\uc5d0 \uc2ec\uac01\ud55c \uc704\ud5d8\uc744 \ucd08\ub798\ud558\uc9c0\ub9cc \ubcf4\uc548 \ucf54\ub529 \ubc29\uc2dd\uc744 \ucc44\ud0dd\ud558\uace0 \ud504\ub85d\uc2dc \uc11c\ubc84\uc758 \uae30\ub2a5\uc744 \ud65c\uc6a9\ud568\uc73c\ub85c\uc368 \uac1c\ubc1c\uc790\ub294 \uc774\ub7ec\ud55c \uc704\ud611\uc744 \ubc29\uc5b4\ud558\uace0 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uacfc \ub370\uc774\ud130\uc758 \ubb34\uacb0\uc131\uacfc \ubcf4\uc548\uc744 \ubcf4\uc7a5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>","protected":false},"featured_media":497608,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477282","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Format String Attack: Understanding the Vulnerability Exploited by Hackers<\/mark>","faq_items":[{"question":"What is a Format String Attack?","answer":"A Format String Attack is a type of security vulnerability that occurs in computer programming. It allows attackers to exploit the way a program handles formatted input\/output functions, potentially leading to unauthorized access, data leaks, or even code execution on the target system."},{"question":"How did Format String Attacks originate?","answer":"The concept of Format String Attacks was first highlighted in a 2000 paper titled \"Exploiting Format String Vulnerabilities\" by Kostya Kortchinsky. Since then, these attacks have been a significant concern in software development due to their potential to compromise system integrity and confidentiality."},{"question":"How does a Format String Attack work?","answer":"In a Format String Attack, the attacker manipulates the format string parameter in formatted input\/output functions, such as <code>printf()<\/code> and <code>sprintf()<\/code>. By controlling the format string, the attacker can read sensitive data, write to memory addresses, or even execute arbitrary code by exploiting certain format specifiers."},{"question":"What are the key features of a Format String Attack?","answer":"The key features of a Format String Attack include the attacker's ability to control the format string, exploit stack-based memory access, and manipulate memory contents through format specifiers."},{"question":"What types of Format String Attacks exist?","answer":"Format String Attacks can be classified into two main types:\r\n<ol>\r\n \t<li>Reading Attacks: Exploiting format specifiers to read sensitive data from the program's memory.<\/li>\r\n \t<li>Writing Attacks: Exploiting format specifiers to write data to specific memory addresses, enabling the modification of variables or function pointers.<\/li>\r\n<\/ol>"},{"question":"How can Format String Attacks be prevented?","answer":"To prevent Format String Attacks, developers should:\r\n<ul>\r\n \t<li>Validate user-controlled input before using it as a format string.<\/li>\r\n \t<li>Avoid using format strings with user-controlled data whenever possible.<\/li>\r\n \t<li>Utilize compiler security features like <code>-fstack-protector<\/code> to detect and prevent vulnerabilities.<\/li>\r\n<\/ul>"},{"question":"How can proxy servers like OneProxy help with Format String Attacks?","answer":"Proxy servers like OneProxy can aid in mitigating Format String Attacks by:\r\n<ul>\r\n \t<li>Filtering user input before forwarding it to the target server.<\/li>\r\n \t<li>Implementing Web Application Firewall (WAF) functionality to protect against format string vulnerabilities.<\/li>\r\n \t<li>Logging and monitoring incoming requests to detect and analyze potential attack attempts.<\/li>\r\n<\/ul>"},{"question":"Are there any other vulnerabilities similar to Format String Attacks?","answer":"While Format String Attacks are unique, there are other vulnerabilities in the realm of cybersecurity, such as Buffer Overflow, SQL Injection, and Cross-Site Scripting, each with distinct exploitation methods and consequences."},{"question":"How can I learn more about Format String Attacks?","answer":"For further information about Format String Attacks, you can explore the following resources:\r\n<ol>\r\n \t<li><a href=\"https:\/\/www.owasp.org\/images\/2\/26\/OWASPAppSecDC2006-MitjaK.pdf\" target=\"_new\">Exploiting Format String Vulnerabilities<\/a> - A presentation by Mitja Kolsek and Kostya Kortchinsky at OWASP AppSec DC 2006.<\/li>\r\n \t<li><a href=\"https:\/\/crypto.stanford.edu\/cs155\/papers\/formatstring-1.2.pdf\" target=\"_new\">The Format String Bug - A First Look<\/a> - A paper by Aleph One exploring format string vulnerabilities in-depth.<\/li>\r\n \t<li><a href=\"https:\/\/owasp.org\/www-project-top-ten\/\" target=\"_new\">OWASP Top Ten<\/a> - OWASP's top ten list of web application security risks, including format string vulnerabilities.<\/li>\r\n<\/ol>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/wiki\/477282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/wiki\/477282\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/media\/497608"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/media?parent=477282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}