tcpdump before 4.9.3 mishandles the printing of SMB data (issue 1 of 2).
4.9.3-0ubuntu0.16.04.14.9.3-0ubuntu0.18.04.14.9.3-0ubuntu0.14.04.1+esm1Exploitability
AV:NAC:LPR:NUI:NScope
S:UImpact
C:HI:HA:HCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H