RE: protection against buffer overflows
hi ya steve...
when you write a program... you usually pass variables around...
the system keeps a "stack of return address/variables" ..what to do
next...
the rootkits tries to make the return address of "foo" program
to give them root access..
- so much for my simplied one-liners..
- a simplified picture...
http://www.cse.ogi.edu/DISC/projects/immunix/StackGuard/usenixsc98_html/node5.html
have fun linuxing
alvin
On 23 Jan 2002, Steve Johnson wrote:
> this may seem trivial but i've never really understood how a buffer
> overflow happens and effects your system, i have some knowledge of
> programming, but not much at low levels. like dealing direct with
> memory or devices(other than using standard pointers and reading and
> writing to devices thruough file pointers). anyone to offer any
> explanation will be showered with greatness!
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