On 09/07/2012 11:44 AM, Joschi Brauchle wrote:
Hello,
I noticed a problem when using pam_sss (1.8.3) under OpenSUSE 12.2
+ KDE and filed a bugreport there:
https://bugzilla.novell.com/show_bug.cgi?id=779246
When a Kerberos user enters a wrong password, a KDM "Critical
error" message pops up (see link above for a screenshot).
In /var/log/messages, there is
------
Sep 7 11:34:03 test-os122 [sssd[krb5_child[1102]]]: Decrypt
integrity check
failed
Sep 7 11:34:03 test-os122 [sssd[krb5_child[1102]]]: Decrypt
integrity check
failed
Sep 7 11:34:03 test-os122 kdm: :0[1085]: pam_sss(xdm:auth):
system info:
[Decrypt integrity check failed]
Sep 7 11:34:03 test-os122 kdm: :0[1085]: pam_sss(xdm:auth):
authentication
failure; logname= uid=0 euid=0 tty=:0 ruser= rhost= user=testuser
Sep 7 11:34:03 test-os122 kdm: :0[1085]: pam_sss(xdm:auth):
received for user
testuser: 4 (System error)
------
As far as I know, "decrypt integrity fails" is the default
Kerberos error message for a wrong password. Hence, this is not a
"System error", but rather an authentication error.
When looking at the code of "krb5_child.c", it seems like the
default return code when checking the Kerberos TGT is
"PAM_SYSTEM_ERR", which also gets returned in the event of a
simply wrong password.
I guess, pam_sss should instead return "PAM_AUTH_ERR", is that
correct?
Has this been fixed in versions > 1.8.3?
Best regards,
Joschi Brauchle
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You can check the latest code here:
http://git.fedorahosted.org/git/sssd
If it is still not fixed please file a ticket:
https://fedorahosted.org/sssd/
Thank you for your help!
--
Thank you,
Dmitri Pal
Sr. Engineering Manager for IdM portfolio
Red Hat Inc.
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