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Top Forums UNIX for Dummies Questions & Answers Difference between inbuilt suid programs and user defined root suid programs under bash shell? Post 302955671 by disedorgue on Sunday 20th of September 2015 12:55:37 PM
Old 09-20-2015
Hi,
What does "a.out" doing ?
It try to launch bash in setuid root ?
You shall know that bash not work by default in setuid root, you must use "-p" option.

In man:
Quote:
If the shell is started with the effective user (group) id not equal to the real user (group) id, and the -p option is not
supplied, no startup files are read, shell functions are not inherited from the environment, the SHELLOPTS, BASHOPTS, CDPATH,
and GLOBIGNORE variables, if they appear in the environment, are ignored, and the effective user id is set to the real user
id. If the -p option is supplied at invocation, the startup behavior is the same, but the effective user id is not reset.
Regards.
 

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VMWARE-USER-SUID-WRAPPER(8)					   Open VM Tools				       VMWARE-USER-SUID-WRAPPER(8)

NAME
vmware-user-suid-wrapper - wrapper programm for vmware-user(1) SYNOPSIS
vmware-user-suid-wrapper DESCRIPTION
Operations on the vmblock(9) filesystem are considered privileged, and as such may only be issued on a file descriptor acquired by root. This is accomplished by vmware-user-suid-wrapper, a small setuid wrapper whose only purpose is to acquire a filesystem file descriptor, drop superuser privileges, and then execute vmware-user(1). In particular, prepare the system for vmware-user means that it unmounts the vmblock file system, unloads the vmblock module, then reloads the module, mounts the file system, and opens a file descriptor that vmware- user can use to add and remove blocks. OPTIONS
vmware-user-suid-wrapper has no options. SEE ALSO
vmware-checkvm(1) vmware-hgfsclient(1) vmware-toolbox(1) vmware-toolbox-cmd(1) vmware-user(1) vmware-xferlogs(1) libguestlib(3) libvmtools(3) vmware-guestd(8) vmware-hgfsmounter(8) vmblock(9) vmci(9) vmhgfs(9) vmmemctl(9) vmsock(9) vmsync(9) vmxnet(9) vmxnet3(9) HOMEPAGE
More information about vmware-user-suid-wrapper and the Open VM Tools can be found at <http://open-vm-tools.sourceforge.net/>. AUTHOR
Open VM Tools were written by VMware, Inc. <http://www.vmware.com/>. This manual page was put together from homepage materials by Daniel Baumann <daniel.baumann@progress-technologies.net>, for the Debian project (but may be used by others). 2010.03.20-243334 2010-04-08 VMWARE-USER-SUID-WRAPPER(8)
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