At least Windows KDCs return KRB5KRB_AP_ERR_SKEW without edata in
response to TGS-REQ.
This ensures the callers see the KRB5KRB_AP_ERR_SKEW error and not
KRB5_KDCREP_MODIFIED "FAST fast response is missing FX-FAST".
For the response to an amored AS-REQ, we'll now return
KRB5KRB_AP_ERR_MODIFIED instead of KRB5_KDCREP_MODIFIED,
but if there's an attack the exact error code doesn't matter.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15676
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
c2e68593a5