Re: 2.2.0 SECURITY

Dan Burcaw (dburcaw@terraplex.com)
Tue, 26 Jan 1999 22:01:46 -0700 (MST)


Ok.. one more update...

2.2.0ac1:
doesn't crash if permissions of the core are set to 700
DOES crash however if they are 600

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).
>
> To replicate this bug do following:
>
> 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
>
> As far as I can tell, this problem only affects x86 machines running
> 2.2.0. I know that PPC is not affected.
>
> Note: This problem does not occur in kernels before 2.2.0, and is
> apparently fixed in 2.2.0ac1.
>
> Thanks to Gennady Gurov (gurov@frii.com) for discovering this problem.
>
>
> Dan
>
> Terra Firma Design & Terra Soft Solutions, Inc.
>
> voice (970) 416-9821 in Fort Collins
> email dburcaw@terraplex.com
> website http://www.terraplex.com/
>
>
>
>

Dan

Terra Firma Design & Terra Soft Solutions, Inc.

voice (970) 416-9821 in Fort Collins
email dburcaw@terraplex.com
website http://www.terraplex.com/

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