Re: auid field when switching user
On Wed, 2015-05-06 at 10:56 -0400, Steve Grubb wrote:
Hello,
On Wednesday, May 06, 2015 04:39:16 PM Guillaume L. wrote:
> I'm trying to use auditd to log all actions made by the users on the
> system. This part works fine.
>
> The documentation mention the "auid" field to identify the user from the
> first connection "even" when the user's identity changes (like with a
su):
Correct.
> auid=500
> The auid field records the Audit user ID, that is the loginuid. This ID is
> assigned to a user upon login and is inherited by every process even when
> the user's identity changes (for example, by switching user accounts with
> the su - john command).
>
> But this is not working. If I log with the user "test" (uid 1000) when I
> switch to the user root, the value of auid is 0 (the uid of root).
How did you switch the user? I would like to try recreating the issue. It may
be that the underlying implementation actually does log you out. You'd have to
look for one of:
AUDIT_USER_LOGOUT - User has logged out
AUDIT_USER_END - User session end
AUDIT_CRED_DISP - User credential disposed
Perhaps pam_loginuid hasn't been applied
in
/etc/pam.d/{atd,crond,gdm,gdm-autologin,gdm-fingerprint,gdm-password,login,remote,sshd,ssh-keycat}
When searching for the module, do you see something like
# grep pam_loginuid /etc/pam.d/*
/etc/pam.d/atd:session required pam_loginuid.so
/etc/pam.d/crond:session required pam_loginuid.so
/etc/pam.d/gdm:session required pam_loginuid.so
/etc/pam.d/gdm-autologin:session required pam_loginuid.so
/etc/pam.d/gdm-fingerprint:session required
pam_loginuid.so
/etc/pam.d/gdm-password:session required
pam_loginuid.so
/etc/pam.d/login:session required pam_loginuid.so
/etc/pam.d/remote:session required pam_loginuid.so
/etc/pam.d/sshd:session required pam_loginuid.so
/etc/pam.d/ssh-keycat:session required pam_loginuid.so
#
If not, then read up on how to use required pam modules.
-Steve
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