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Tasklist

FS#13761 - coreutils-6.12-1: Allows su access to root without being in wheel group

Attached to Project: Arch Linux
Opened by Todd Partridge (Gen2ly) - Thursday, 12 March 2009, 02:23 GMT
Last edited by Aaron Griffin (phrakture) - Thursday, 12 March 2009, 17:04 GMT
Task Type Bug Report
Category Packages: Core
Status Closed
Assigned To No-one
Architecture All
Severity Critical
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:

Just installed Arch Linux and orginally added myself to wheel group. Removed myself from wheel group yesterday, started the computer today and su'd to root before remembering that I shouldn't be able to.

The user is not it /etc/group nor shows with "id <user>":

grep wheel /etc/group
wheel::10:root

id todd
uid=1001(todd) gid=100(users) groups=100(users),50(games),92(audio),93(optical),95(storage)

Additional info:
* package version(s): coreutils-6.12-1
* config and/or log files etc:

tail /var/log/auth.log
...
Mar 11 20:01:26 part-emach su: pam_unix(su:session): session opened for user root by (uid=1001)

Perhaps I'm a little out of date. In Gentoo, wheel group permission was explicate before being able to gain root priviledges.
This task depends upon

Closed by  Aaron Griffin (phrakture)
Thursday, 12 March 2009, 17:04 GMT
Reason for closing:  Not a bug
Additional comments about closing:  PAM configuration issue
Comment by Gerardo Exequiel Pozzi (djgera) - Thursday, 12 March 2009, 02:43 GMT
Hi, this isn't a bug. ;)

See
$ cat /etc/pam.d/su
#%PAM-1.0
auth sufficient pam_rootok.so
# Uncomment the following line to implicitly trust users in the "wheel" group.
#auth sufficient pam_wheel.so trust use_uid
# Uncomment the following line to require a user to be in the "wheel" group.
#auth required pam_wheel.so use_uid
auth required pam_unix.so
account required pam_unix.so
session required pam_unix.so


so uncomment, the lines that are necesary for you :)
Comment by Todd Partridge (Gen2ly) - Thursday, 12 March 2009, 16:49 GMT
oooooh. heh!

Just learned su has a configuration. :)

Thanks Gerardo.

Requesting closure.

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