0
votes
1answer
78 views

Process ownership on linux changes to root when the user tries to kill the process

We have a bunch of RHEL machines which all run an application binary that is owned by root and has SUID set. Let's say user X starts the application, the process starts with PPID 1, since SUID is set ...
2
votes
3answers
380 views

How do I drop root privileges in shell scripts?

The "--up" option in OpenVPN is normally used for routing etc. And so it is processed before OpenVPN drops root privileges to run as nobody. However, I am invoking shell scripts that need to run as an ...
1
vote
1answer
82 views

Why doesn't setuid not work? [duplicate]

I want my program can only be run by user xyz using root privilege. So I set setuid with: chmod u+s program1.sh ls -l program1.sh rwsr-x--- 1 root house 1299 May 15 23:54 program1.sh And I let user ...
3
votes
1answer
217 views

How does having /dev/fd make running shell scripts under sudo safe?

At the end of the man page for sudo, there's the following remark: Running shell scripts via sudo can expose the same kernel bugs that make setuid shell scripts unsafe on some operating systems ...
1
vote
1answer
877 views

How to suid iwconfig on Debian wheezy?

I have a script running under my own user account that takes care of all sorts of wireless interfaces. It (more or less) intelligently switches wireless LAN off and on and so forth. However, it does ...
2
votes
1answer
224 views

How to set up a script to run as root non-interactively?

I need to set up the following script to run as root whenever I log in: #!/bin/zsh truncate -s 0 ~yourstruly/.juniper_networks/network_connect/ncsvc.log I know how to run the script as root ...