[krbdev.mit.edu #2110] MIT KDC fails to handle unknown padata

DEEngert@anl.gov via RT rt-comment at krbdev.mit.edu
Wed Feb 11 16:39:37 EST 2004





Sam Hartman wrote:
> 
> Hi, Doug.  I applied your patches and they seemed to work.
> 
> However I was unable to reproduce the error you got against a 1.2.x or
> 1.3.x KDC.  I was able to reproduce this problem against a 1.0.7 KDC.

Using a modified 1.3.2 kinit:

kinit -m b17783 at KRB5.ANL.GOV  

to a 1.2.8 KDC, I can get it to fail if the user principal has 
the REQUIRE_PRE_AUTH attribute. When it is not set the kinit works. 

Have you tried this combination? 

kinit output:
 
orleans.ctd.anl.gov% kinit -m b17783 at KRB5.ANL.GOV
kinit(v5): Preauthentication failed while getting initial credentials


KDC log:

Feb 11 15:18:48 chimera.ctd.anl.gov krb5kdc[324]: no valid preauth type found: Unknown code 0
Feb 11 15:18:48 chimera.ctd.anl.gov krb5kdc[324]: AS_REQ (4 etypes {1 3 16 23}) 146.137.180.252(88): PREAUTH_FAILED: b17783 at KRB5.ANL.GOV for krbtgt/KRB5.ANL.GOV at KRB5.ANL.GOV, Preauthentication failed



-- 

 Douglas E. Engert  <DEEngert at anl.gov>
 Argonne National Laboratory
 9700 South Cass Avenue
 Argonne, Illinois  60439 
 (630) 252-5444


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