Security update for libheimdal

This update for libheimdal fixes the following issues:

- CVE-2017-17439: Remote unauthenticated attackers may have crashed the KDC (boo#1071675)

Fixed bugs
bnc#1071675
VUL-0: CVE-2017-17439: libheimdal: Remote unauthenticated attackers are able to crash the KDC by sending a crafted UDP packet
Selected Binaries
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