security/vuxml: Mark zeek < 5.0.2 as vulnerable as per:

    https://github.com/zeek/zeek/releases/tag/v5.0.2

The potential DoS vulnerabilities include:

 - Fix a possible overflow and crash in the ICMP analyzer when
   receiving a specially crafted packet

 - Fix a possible overflow and crash in the IRC analyzer when
   receiving a specially crafted packet

 - Fix a possible overflow and crash in the SMB analyzer when
   receiving a specially crafted packet

 - Fix two possible crashes when converting IP headers for output
   via the raw_packet event

Reported by:	Tim Wojtulewicz