SunOS v4.1.3 crash

[islams () sol cse fau edu (Shams Islam)]

> Vulnerable OS is (at least) SunOS 4.1.3.
>
> With the right permissions (umask) the following
> sequence crahes the system. The kernel does not
> panic, nor the abort sequece enters the boot
> promt, the system is halted, need to power down.


yea this is the same as:


        mkdir /tmp/foo
        cd /tmp/foo
        chmod 555 .
        ln /etc/motd .




                -Pete

at least SunOS v4.1.3? Hmm.. Well, I believe they eradicated that in v4.1.4

mars%         chmod 555 .
mars%    ln /etc/motd .
ln: ./motd: Cross-device link