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Full Discussion: Question: Automatic launching of a CLI menu upon login (OpenBSD)
Top Forums Shell Programming and Scripting Question: Automatic launching of a CLI menu upon login (OpenBSD) Post 302514456 by alister on Friday 15th of April 2011 05:59:25 PM
Old 04-15-2011
Quote:
Originally Posted by DGPickett
I think setuid shell script is almost impossible, as the dynamic lib locations are not compiled into the shells!
That suid sh script remark was intended as a joke, particularly given the platform in question. You're correct regarding the near impossiblity, but I believe you're reason is mistaken. Most modern UNIX platforms simply do not honor the suid bit for interpreted files.

I'm not certain what your dynamic library location remark means, unless you are referring to the fact that the loader ignores LD_LIBRARY_PATH and LD_PRELOAD for suid binaries. If so, that's an unrelated security issue.

Regards,
Alister
 

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LEARN ABOUT REDHAT

elks

elksemu(1)						      General Commands Manual							elksemu(1)

NAME

       elksemu - Embedded Linux Kernel Subset emulator

SYNOPSIS

       /lib/elksemu program [arguments]

DESCRIPTION

       Elksemu is a program that allows 8086 ELKS programs to be run under Linux-i386. These programs can be compiled using the bcc(1) C compiler.

       It  is not usual to invoke /lib/elksemu directly, either the simple patch or kernel module distributed with it will cause the kernel to run
       /lib/elksemu with the correct arguments whenever the user tries to execute an ELKS executable directly.

OPTIONS

       There are no flag options to elksemu, the first argument is the name of the program to run the rest are arguments that are  passed  to  the
       Elks program.

       The  elksemu  program is normally installed suid-root and in this event it is able to run execute only (chmod 111) elks executables and act
       correctly on the suid permission bits on those executable. This may be considered a  security  hazard  so  elksemu  does  not  have  to	be
       installed suid-root.

SEE ALSO

       bcc(1), as86(1), ld86(1)

BUGS

       Elksemu is incomplete.

       The program may still have security bugs!

								     Jan, 1997								elksemu(1)
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