pull up r23724 from trunk

pull up r23724 from trunk

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 r23724 | tlyu | 2010-02-16 17:10:17 -0500 (Tue, 16 Feb 2010) | 10 lines

 ticket: 6662
 subject: MITKRB5-SA-2010-001 CVE-2010-0283 KDC denial of service
 tags: pullup
 target_version: 1.8

 Code introduced in krb5-1.7 can cause an assertion failure if a
 KDC-REQ is internally inconsistent, specifically if the ASN.1 tag
 doesn't match the msg_type field.  Thanks to Emmanuel Bouillon (NATO
 C3 Agency) for discovering and reporting this vulnerability.

ticket: 6664
version_fixed: 1.7.2
status: resolved

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-7@23731 dc483132-0cff-0310-8789-dd5450dbe970