2: 2019-12-09 (月) 12:00:05 iseki  |
3: 2019-12-09 (月) 18:32:02 iseki |
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| Line 1: | Line 1: | ||
| ** BOF [#c9e492b5] | ** BOF [#c9e492b5] | ||
| + | - https://www.ipa.go.jp/security/awareness/vendor/programmingv2/contents/c905.html | ||
| - Buffer Over Flow | - Buffer Over Flow | ||
| #br | #br | ||
| - ASLR | - ASLR | ||
| - カナリア SSP | - カナリア SSP | ||
| + | -- -fstack-protector | ||
| + | -- -fno-stack-protector | ||
| + | -- -fstack-protector-all | ||
| + | - ASLR、DEP、FullRELRO有効、SSP、PIE | ||
| - DEP | - DEP | ||
| - PIC, PIE | - PIC, PIE | ||
| #br | #br | ||
| + | |||
| + | PIC (Position Independent Code) | ||
| + | |||
| + | |||
| + | ASLR (Address Space Layout Randomization) | ||
| + | |||
| + | sysctl -w kernel.randomize_va_space=0 | ||
| + | sysctl -w kernel.randomize_va_space=2 | ||
| + | |||
| + | KASLR : カーネルの位置をランダム化したもの | ||
| + | |||
| + | |||
| + | -fno-stack-protector -z execstack | ||
- BOF のバックアップ一覧
- BOF のバックアップ差分(No. All)
