KDC denial of service attacks [MITKRB5-SA-2011-002 CVE-2011-0281 CVE-2011-0282]

KDC denial of service attacks [MITKRB5-SA-2011-002 CVE-2011-0281 CVE-2011-0282]

pull up r24622 from trunk, minus the fix for CVE-2011-0283, which is
only applicable to krb5-1.9 and later.

 ------------------------------------------------------------------------
 r24622 | tlyu | 2011-02-09 15:25:08 -0500 (Wed, 09 Feb 2011) | 10 lines

 ticket: 6860
 subject: KDC denial of service attacks [MITKRB5-SA-2011-002 CVE-2011-0281 CVE-2011-0282 CVE-2011-0283]
 tags: pullup
 target_version: 1.9.1

 [CVE-2011-0281 CVE-2011-0282] Fix some LDAP back end principal name
 handling that could cause the KDC to hang or crash.

 [CVE-2011-0283] Fix a KDC null pointer dereference introduced in krb5-1.9.

ticket: 6862
version_fixed: 1.8.4
status: resolved

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-8@24626 dc483132-0cff-0310-8789-dd5450dbe970