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Full Discussion: setuid bit on user + dynamically linked libraries
Top Forums Programming setuid bit on user + dynamically linked libraries Post 302092214 by matrixmadhan on Saturday 7th of October 2006 08:07:56 AM
Old 10-07-2006
setuid bit on user + dynamically linked libraries
hi all,

i have a critical and specific problem with respect to set uid bit on user and the dll's

for a binary, (under the userid A)
it needs libraries from /usr/lib and informix libraries from $INFORMIXDIR/lib/esql

but this binary should be kicked off from id B,
hence s-bit on user is set for the binary

after setting the s-bit on the binary and the dynamic dependencies and shared objects are listed using ldd,
i could see only the libraries from default directory /usr/lib/ are listed and not from the INFORMIX library paths.

when searched in search engine about this, found that
due to security reasons for a binary for which set bit is set on the user or group the dynamic dependencies will not be included.

can you please provide me a pointer on how to handle this ?
 

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LEARN ABOUT OPENSOLARIS

lib300s

libplot(3LIB)							Interface Libraries						     libplot(3LIB)

NAME

       libplot, lib300, lib300s, lib4014, lib450, libvt0 - graphics interface libraries

SYNOPSIS

       cc [ flag... ] file... -lplot [ library... ]
       #include <plot.h>

DESCRIPTION

       Functions in this library generate graphics output.

INTERFACES

       The  shared  object  libplot.so.1  provides  the  public interfaces defined below. See Intro(3) for additional information on shared object
       interfaces.

       arc			     box
       circle			     closepl
       closevt			     cont
       erase			     label
       line			     linemod
       move			     openpl
       openvt			     point
       space

FILES

       /usr/lib/libplot.so.1	   shared object

       /usr/lib/64/libplot.so.1    64-bit shared object

       /usr/lib/lib300.so.1	  shared object

       /usr/lib/64/lib300.so.1	  64-bit shared object

       /usr/lib/lib300s.so.1	   shared object

       /usr/lib/64/lib300s.so.1    64-bit shared object

       /usr/lib/lib4014.so.1	   shared object

       /usr/lib/64/lib4014.so.1    64-bit shared object

       /usr/lib/lib450.so.1	  shared object

       /usr/lib/64/lib450.so.1	  64-bit shared object

       /usr/lib/libvt0.so.1	  shared object

       /usr/lib/64/libvt0.so.1	  64-bit shared object

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsl (32-bit)		   |
       +-----------------------------+-----------------------------+
       |			     |SUNWcslx (64-bit) 	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       pvs(1), Intro(3), attributes(5)

SunOS 5.11							    13 Jun 2003 						     libplot(3LIB)
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