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FORTIFY_SOURCE

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FORTIFY_SOURCE

This is a discussion on "FORTIFY_SOURCE" within the Applications, Tools & Papers part of the Computer Security: Discussions section; Just out of interest has anyone been playing with playing with FC4 yet ? Still looking for a nice method to bypass all the FORTIFY_SOURCE junk.. makes life a pain.....

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#1 (permalink)

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16-09-05

h3llfyr3 is offline

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FORTIFY_SOURCE

Just out of interest has anyone been playing with playing with FC4 yet ?

Still looking for a nice method to bypass all the FORTIFY_SOURCE junk..
makes life a pain..

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#2 (permalink)

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24-11-05

teh_welshi teh_welshi is offline

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Yeah i wasn't too happy when I started playing around with FC4..
the randomisation on the stack makes life a nightmare..
All I can say is keep at it..
I heard buffer underflows were explotable on FC4, cant say i've looked into it so take that one with a pinch of salt..

FC3 had it's issues and since then, they harderned FC4 up. So like I say best way is to look for any addr that is static and writeable.. lol but good luck on that one..

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#3 (permalink)

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24-11-05

teh_welshi teh_welshi is offline

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saying that if u wanted to turn all the FC4 security junk off so you can write standard exploits (for the likes of debian.. hahahaha) just turn off selinux and do:

echo 1 > /proc/sys/vm/legacy_va_layout
echo 0 > /proc/sys/kernel/randomize_va_space
echo 0 > /proc/sys/kernel/exec-shield

and that'll sort you out so you can do they usual funky exploits..

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#4 (permalink)

Old

01-12-05

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Requirments

What do i need to get this to work? :wink:

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