How does the suid feature really work?
The acclaimed trick don't work on our system 2.5.1.
# cp /bin/sh /bin/sh.bak
# chmod 4555 /bin/sh
# su - testuser
I'm still 'testuser' with no addition permission.
The sh and csh does not support the suid facility; ksh does well support it.
# passwd root (or `su -`)
is still not possible.
Thanks to *
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