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Old 01-14-2005, 07:21 AM   #1
bulldogzerofive
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Registered: Oct 2004
Location: Germany
Distribution: Mandriva LE2005, Ubuntu Hoary Hedgehog
Posts: 26

Rep: Reputation: 15
su stopped working


I am running mandrake 10.1 with KDE 3.2.2. I don't know why this happened, but the "su" command just stopped working. I get the response:

su: cannot set groups: Operation not permitted

I can log into root initially, and then "su bob" and get into bob, but it will not let me back into root. Also, i can only get into other accounts if i am starting from root.

I think the problem might be a problem with the password recognition, since even if i create an account with a null password su will ask for one and then give me the same denial unless i am attempting to su as root.

Anybody know what is going on here?
 
Old 01-14-2005, 09:44 AM   #2
jerm1701
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I believe you have to be in the wheel group in order to su. You can use the groups command to see whether or not your in it.

Jeremy
 
Old 01-14-2005, 10:45 AM   #3
LasseW
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Also verify that the SUID bit is set for su with ls -l /bin/su
 
Old 01-14-2005, 11:15 AM   #4
bulldogzerofive
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Distribution: Mandriva LE2005, Ubuntu Hoary Hedgehog
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Original Poster
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it says
-rwxrwxs-x 1 root root 20408 JUL 25 12:12 /bin/su*

which, if i am not mistaken, means user can read, write, and execute; group can read, write, and execute, others can execute.

Is this what i want to see?
 
Old 01-14-2005, 12:51 PM   #5
LasseW
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SUID needs to be set so it can run with root privileges for ordinary users like this:

-rwsr-xr-x 1 root root 52770 Oct 5 18:50 su

Set the SUID bit with

chmod u+s /bin/su

and try again
 
Old 01-17-2005, 02:05 AM   #6
bulldogzerofive
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Registered: Oct 2004
Location: Germany
Distribution: Mandriva LE2005, Ubuntu Hoary Hedgehog
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Original Poster
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Smile thanx

thanks, dude

that took care of it
 
  


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