Editing Canaries
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From wiki: http://en.wikipedia.org/wiki/Buffer_overflow_protection#Canaries | From wiki: http://en.wikipedia.org/wiki/Buffer_overflow_protection#Canaries | ||
"Canaries are known values that are placed between a buffer and control data on the stack to monitor buffer overflows." | "Canaries are known values that are placed between a buffer and control data on the stack to monitor buffer overflows." | ||
Those are also present in the PS3 system and they're initialized at kernel startup from timebase counter (ticks). | Those are also present in the PS3 system and they're initialized at kernel startup from timebase counter (ticks). | ||
You can't control them however. These are one of the obstacles against kernel(lv2) exploits. | You can't control them however. These are one of the obstacles against kernel(lv2) exploits. | ||
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Theoretically, only syscalls, but it's unknown for sure. | Theoretically, only syscalls, but it's unknown for sure. | ||