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i just tested grsecurity. i installed debian and a vulnerable version of proftpd. i launched an exploit. worked. patched the latest kernel with grsec. and now the exploit doesnt work anymore. BUT . wouldnt just a the new kernel alone cause the exploit to fail? the exploit was only for debian sqzeeze and one special version of proftpd??

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Thinking you'll get interest if you post this over in – Rory Alsop Jan 31 '11 at 21:15
up vote 1 down vote accepted

It did work!

didnt see it in the remote shell but directly on the server

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