hi i have written small script which will login 2 two different users with su but if we run from normal user it prompts for password so
i chnaged the owner of script to root and added setuid bit
with
chmod u+s <script_name>
I have a binary. It is having the following permissions
rws rws rwx mqm:mqm runmqtrm
The same program on another machine is
rws rws rwx root: mqm runmqtrm
This program is a setuid program.
This is what my understanding is. Whatever user the program is started under, it will finally be... (0 Replies)
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... (5 Replies)
Hi,
I am compiling Qt-4.7 for 32-bit on 64-bit (x86_64) Ubuntu 8.04 desktop. I have installed all the 32-bit libraries (/lib32 and /usr/lib32) through getlibs and "apt-get install ia32-libs". But I am getting the following error while configuring the qt project as:
./configure -platform... (2 Replies)
Hi,
OS : Linux
I have an executable (P1) owned by user say "abcd" and the setuid bit is set. And there is another executable (P2) which brings up the process (P1).
When the setuid bit is set, the process P1 is failing, if the setuid bit is not set there is no issue.
I was wondering if... (6 Replies)
Dear all,
I am newbie with linux, i dont understand any code. I have googled a long time. Please help me explain about setuid bit on linux (Centos 6)
Here:
1/ I chmod u+s for /sbin/iptables but normal user still cannot perform command (ex: /sbin/iptables -L)
2/Someone says : setuid only... (6 Replies)
Hi,
Here is the issue. From the program snippet I have Base: 0x1800000000, Size: 0x3FFE7FFFFFFFF which are of 40 and 56 bits. SO I used use bignum to do the math but summing them up I always failed having correct result.
perl interpreter info,
perl, v5.8.8 built for... (0 Replies)
Just learning about the privilege escalation method provided by setuid. Correct me if I am wrong but what it does is change the uid of the current process to whatever uid I set. Right ?
So what stops me from writing my own C program and calling setuid(0) within it and gaining root privileges ?
... (2 Replies)
Discussion started by: sreyan32
2 Replies
LEARN ABOUT DEBIAN
setuid
SETUID(1) General Commands Manual SETUID(1)NAME
setuid - run a command with a different uid.
SYNOPSIS
setuid username|uid command [ args ]
DESCRIPTION
Setuid changes user id, then executes the specified command. Unlike some versions of su(1), this program doesn't ever ask for a password
when executed with effective uid=root. This program doesn't change the environment; it only changes the uid and then uses execvp() to find
the command in the path, and execute it. (If the command is a script, execvp() passes the command name to /bin/sh for processing.)
For example,
setuid some_user $SHELL
can be used to start a shell running as another user.
Setuid is useful inside scripts that are being run by a setuid-root user -- such as a script invoked with super, so that the script can
execute some commands using the uid of the original user, instead of root. This allows unsafe commands (such as editors and pagers) to be
used in a non-root mode inside a super script. For example, an operator with permission to modify a certain protected_file could use a
super command that simply does:
cp protected_file temp_file
setuid $ORIG_USER ${EDITOR:-/bin/vi} temp_file
cp temp_file protected_file
(Note: don't use this example directly. If the temp_file can somehow be replaced by another user, as might be the case if it's kept in a
temporary directory, there will be a race condition in the time between editing the temporary file and copying it back to the protected
file.)
AUTHOR
Will Deich
local SETUID(1)