pull up r19914 from trunk

 r19914@cathode-dark-space:  tlyu | 2007-09-04 14:53:09 -0400
 ticket: new
 target_version: 1.6.3
 tags: pullup
 subject: fix CVE-2007-4000 modify_policy vulnerability
 
 In kadm5_modify_policy_internal, check for nonexistence of policy
 before doing anything with it, to avoid memory corruption.
 
 


Commit By: tlyu



Revision: 20291
Changed Files:
_U  branches/krb5-1-5/
U   branches/krb5-1-5/src/lib/kadm5/srv/svr_policy.c