Setuid Program with (-rwsr-sr-x 1 root other ) UID/EUID issue Post: 302085482

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1. UNIX for Dummies Questions & Answers

Setuid root and chown

I am trying to run chown and chmod from a script owned by root. The permissions are set to 4755 so that users can execute the script as root. However, when I run the script as a user other than root, I get "Operation not permitted" for both chown and chmod. Any ideas as to why this is?

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To:blowtorch - Setuid uid/euid issue

Hi, Its a shell script. rws by root, r_s by group named "other" and r_x by all others. How can i set the uid from inside a setuid program. please let me know. Also I dont have a c compiler on the system. Thanks Reply With Quote

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We have a Solaris box. I noticed that whenever any non-root user logins into the box and issues the command id the output is (for example) uid=42568(sam) gid=1245(sam) euid=0(root) egid=2(bin). I have not given any privileges to anyone explicitly. When I issued ls -l in the /usr/bin directory I...

4. AIX

sudo must be setuid root.

Guy's I'm trying to add some lines in sudo by useing this command visudo # User privilege specification root ALL=(ALL) ALL # Uncomment to allow people in group wheel to run all commands # %wheel ALL=(ALL) ALL # Same thing without a password # %wheel ALL=(ALL) NOPASSWD: ALL #...

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Hi all I have a strange problem on one my my AIX machines. We have created a user called testroot with the same UID as root (uid=0) by changing the uid of that user in the /etc/passwd file. I know that this is a security breach but this is a test system. Now the strange thing that happens is that...

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What keeps me from abusing setuid(0) and programs with setuid bit set?

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 ? ...

LEARN ABOUT NETBSD

chroot

CHROOT(8)						    BSD System Manager's Manual 						 CHROOT(8)

NAME

     chroot -- change root directory

SYNOPSIS

     chroot [-G group,group,...] [-g group] [-u user] newroot [command]

DESCRIPTION

     The chroot command changes its root directory to the supplied directory newroot and exec's command, or, if not supplied, an interactive copy
     of your shell.

     If the -u, -g, or -G options are given, the user, group, and group list of the process are set to these values after the chroot has taken
     place; see setgid(2), setgroups(2), setuid(2), getgrnam(3), and getpwnam(3).

     Note: command or the shell are run as your real-user-id.

ENVIRONMENT

     The following environment variable is referenced by chroot:

     SHELL  If set, the string specified by SHELL is interpreted as the name of the shell to exec.  If the variable SHELL is not set, /bin/sh is
	    used.

SEE ALSO

     ldd(1), chdir(2), chroot(2), environ(7)

HISTORY

     The chroot utility first appeared in 4.4BSD.

SECURITY CONSIDERATIONS

     chroot should never be installed setuid root, as it would then be possible to exploit the program to gain root privileges.

BSD
								  August 13, 2011							       BSD

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Setuid root and chown

Discussion started by: johnmsucpe

2. UNIX for Dummies Questions & Answers

To:blowtorch - Setuid uid/euid issue

Discussion started by: 0ktalmagik

3. Solaris

EUID set for all non-root users

Discussion started by: chrisanto_2000

4. AIX

sudo must be setuid root.

Discussion started by: ITHelper