{"schemaVersion":3,"id":"CVE-2017-17439","aliases":["ALPINE-CVE-2017-17439","MGASA-2017-0485","UBUNTU-CVE-2017-17439","DEBIAN-CVE-2017-17439","DSA-4055-1"],"status":"published","duplicateOf":null,"title":null,"description":"In Heimdal through 7.4, remote unauthenticated attackers are able to crash the KDC by sending a crafted UDP packet containing empty data fields for client name or realm. The parser would unconditionally dereference NULL pointers in that case, leading to a segmentation fault. 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