Public bug reported:
Out of the blue yesterday, my Ubuntu 7.10 installation had problems
sudoing. I then found su didn't work either. I fixed both problems,
described in http://ubuntuforums.org/showthread.php?t=251358, by
changing the owners and setuid flags as suggested in that post. Both
executables had lost their setuid bits and were owned by root:myuser
before the changes.
This problem extended to /lib/dhcp3-client/call-dhclient-script, which
prevented networking from functioning. That script had the following
permissions:
-rwxr-xr-- root myuser
Instead of the following as on the live CD:
-rwsr-xr-- root dhcp
I changed the setuid and group as on the live CD and it started working,
but why did all of these seemingly simultaneously lose their group and
setuid settings?
** Affects: ubuntu
Importance: Undecided
Status: New
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sudo, su, and /lib/dhcp3-client/call-dhclient-script spontaneously lost owners,
permissions
https://bugs.launchpad.net/bugs/173503
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