Kmem security (was: Re: How do you make your UNIX crash ???
Tim W Smith
ts at cup.portal.com
Sat Mar 23 19:52:02 AEST 1991
A lot depends on how your terminal driver works. For instance, there
was one version of Unix (32V, I believe), whose terminal driver used
a global buffer for canonicalization. On this system, you would
just do something like
yes "_canonb/S" | adb /unix /dev/kmem
and sit back and wait.
Sure, you got a lot of garbage. But every so often, you would see
something like:
_canonb: root
followed by
_canonb: foobar
where foobar would be a pretty good thing to try for the root
password. Sometimes it was wrong, but sometimes it was right,
and that's enough.
Tim Smith
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