[sudo-users] Fwd: SUDO centralization based on Server!
JR.Aquino at citrix.com
Tue Sep 6 16:44:37 EDT 2011
If your user exists in 2 separate Sudo Rules, which have different permit / deny settings, you will indeed find that sometimes you get different results.
It is best to deliberately avoid having contradictory permit / deny lines in multiple ldap rules.
This, I believe, is the reason for the SudoOrder attribute, as ldap may return a rule before another rule.
Jr Aquino, GCIH | Information Security Specialist
Citrix Online | 7408 Hollister Avenue | Goleta, CA 93117
T: +1 805.690.3478
jr.aquino at citrixonline.com
On Sep 6, 2011, at 1:36 PM, pradyumna dash wrote:
> No in the nsswitch.conf file i have modified it to ldap, and my /etc/sudoers file is also blank.
> The only exception i did is i created a group as sysadmin assign the sudo rules and put the user "bob" in that group.
> I will add the debug setting tomorrow, and will see why its permitting to use the command.
> Thanks for your help.
> On Tue, Sep 6, 2011 at 10:31 PM, JR Aquino <JR.Aquino at citrix.com> wrote:
> You CAN restrict a user from executing a command with SUDO and LDAP.
> try setting:
> sudoers_debug 2
> then try running your command again. It sounds like something else may be permitting the command to be run.
> You should get a bunch of debug data that scrolls by, which should include the particular rule that matched.
> Do you have an /etc/sudoers rule that would be overriding your !/sbin/route ?
> Sudo is first match, so depending on what you have in /etc/nsswitch.conf it is possible that it is matching a conf file before looking to ldap.
> Jr Aquino, GCIH | Information Security Specialist
> Citrix Online | 7408 Hollister Avenue | Goleta, CA 93117
> T: +1 805.690.3478
> jr.aquino at citrixonline.com
> On Sep 6, 2011, at 1:21 PM, pradyumna dash wrote:
> > Hi,
> > If i understood correctly, i can't restrict a user from executing some
> > command by centralizing SUDO with OpenLDAP?
> > Regards,
> > Neo
> > On Tue, Sep 6, 2011 at 8:41 PM, Todd C. Miller <Todd.Miller at courtesan.com>wrote:
> >> On Tue, 06 Sep 2011 13:33:17 CDT, Patrick Spinler wrote:
> >>> Someone else will have to chime in to confirm or deny my failing memory,
> >>> but I do know that when using LDAP in general, there are no guarantees
> >>> as to the order that elements are returned from a search; leading from
> >>> that, I seem to recall reading somewhere that the behavior of sudo deny
> >>> rules when pulled from LDAP might not be the same as when reading rules
> >>> from a file, again 'cause you can't specify or enforce a rule order.
> >> That is correct; LDAP does not guarantee the order of the attributes
> >> within a sudoRole. Newer versions of sudo support a sudoOrder
> >> attribute but that only helps with ordering multiple sudoRoles.
> >> - todd
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