Re: 2.2.0 SECURITY (OK with Lib C 5)

Ryan Moore (rmoore@rmoore.i.seawood.org)
Tue, 26 Jan 1999 23:19:30 -0800 (PST)

On Tue, 26 Jan 1999, Dan Burcaw wrote:
>
> There is a bug that works only on the 2.2.0 kernel that will allow root
> and non-root users to crash the machine (the system reboots).
>
> Take any core file, and as normal user or root run: ldd core
>
> The machine will reboot, saying that it cannot get execution permissions
> for ./core

Guess this is a glibc anomally. I can't reproduce it on my machine.

> cat dump.c
main()
{
int *a = 0;

*a = 1;
}

> ./dump
Segmentation fault (core dumped)
> ls -l core
-rw------- 1 rmoore users 253952 Jan 26 23:13 core

> ldd core
(nothing happens)

ldd version 1.8.5
lib c version 5.4.38

--------------------------------
Ryan Moore rmoore@rmoore.i.seawood.org

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