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Questions tagged [setuid]

36 questions
9
votes
1 answer

Why is chroot system call not available to non root user?

I was reading description about setuid on wikipedia http://en.wikipedia.org/wiki/Setuid I was unable to understand how chroot is related to setuid as mention in following paragraph from wikipedia The presence of setuid executables explains why the…
Mr Coder
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8
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4 answers

Set uid for windows

Is there an equivalent of set uid for windows(XP)? The 'run as' option requires admin password each time it runs. I want users to be able to run that particular executable without knowing admin password. I'm very much new to windows area. :(
Akilan
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6
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4 answers

sudo: must be setuid root (Mac OS X)

I ran $ sudo chown -R $USER /usr/bin and now when I try to run programs under the /usr/bin path as sudo I get sudo:must be setuid root What should I do if I would like to revert the chown?
jerome
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6
votes
3 answers

sudo or acl or setuid/setgid?

for a reason I do not really understand, everyone wants sudo for all and everything. At work we even have as many entries as there are way to read a logfile (head/tail/cat/more, ...). I think, sudo is defeating here. I'd rather use a mix of…
Xavier Maillard
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5
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5 answers

(Ubuntu) setuid bash doesn't work

Here is the code: (root:) # mkdir /test # cp /bin/bash /test/sbash # chmod a+s /test/sbash (user1:) $ cd /test $ ./sbash $ mkdir trycreate mkdir: cannot create directory `trycreate': Permission denied And bash scripts with setuid bit set not…
Xiè Jìléi
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5
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1 answer

How do you run a PHP script as the file's owner, rather than as the webserver user?

I'm sure there's a well-known answer for this, but I can't seem to find it. How do I make a user's PHP scripts (in ~user/public_html, for example), run as the owner rather than as (eg) www-data? Assume Apache, Linux, and PHP 5.
jes5199
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1 answer

Linux 2.6.32 Centos 6.4 setuid() fail / security changes?

After recently updating to CentOS 6.4, two machines have setuid() restrictions which act like either capabilities or selinux, however both are disabled. E.g. the following fails: [root@host statd]# perl -e 'use POSIX;…
Patrick
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1 answer

How can I use SetUID on a shell script to run as a non-root user?

Our company's server is running Ubuntu 12.04 (Precise) and Apache 2. We have a custom, internal web application installed. I have a bash script which pulls any updates to that app from source control to the server. Only one user on the system (the…
Jazz
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4
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3 answers

Cannot write to CIFS share as non-root user - CentOS 6

I'm working on a system recently migrated to CentOS 6 from CentOS 4.9. There is a CIFS mount from a Windows 2008 server that existed on the old system. The raw mountpoint has 777 directory permissions. [root@Bootylicious ~]# ls -ld…
ewwhite
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What's the safest way to kick off a root-level process via cgi on an Apache server?

The problem: I have a script that runs periodically via a cron job as root, but I want to give people a way to kick it off asynchronously too, via a webpage. (The script will be written to ensure it doesn't run overlapping instances or such.) I…
MartyMacGyver
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2 answers

Upload only SFTP with OpenSSH and Linux?

I'd like to set up a chrooted SFTP server with upload only privileges. Back in the day, I know I've done this with FTP on FreeBSD through the use of SETUID. All uploaded files were automatically owned by root with others having write only…
PunchMonkey
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4 answers

Mapping UIDs for NFS

I have a Mac OS X file server that serves via SMB/CIFS and AFP. The server is a domain client via the golden triangle approach, but this results in a very large UID for the users. This is fine for my current setup, but I'd like to get NFS working…
churnd
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1 answer

Selective setuid root or running an application as root ? (web server/cgi context)

Well we have an in house server manager (like Webmin, only more specific), comprising of a bunch of C CGI programs and CGI Perl scripts, some of which require root privileges (adding system users, managing passwords, dealing with mail queues etc. )…
Mohit Chawla
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1 answer

Running a shell script with its owner's privileges

On a Debian (5.0.3) server I have a user svnsync who owns a certain shell script: -rwsrwsr-x 1 svnsync users 119 Dec 21 13:45 mirror-svn.sh I'd like everyone in the users group to be able to execute this script with svnsync's privileges. This is…
Jonik
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Best practice for setuid and setgid in /root and user directories

ZFS allows to created datasets with setuid turned off, which (AFAIK) means that setuid bit can't be set on files stored in those datasets. Assume now that there are two datasets, one for the /root and one for the /home directories. Would it make any…
Greg
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