Incorrect interaction of the parse_packet() and parse_part_sign_sha256() functions in network.c in collectd 5.7.1 and earlier allows remote attackers to cause a denial of service (infinite loop) of a collectd instance (configured with SecurityLevel None and with empty AuthFile options) via a crafted UDP packet. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-7401
