The Juniper protocols parser in tcpdump before 4.9.2 has a buffer over-read in print-juniper.c:juniper_parse_header().
https://support.apple.com/HT208221
https://security.gentoo.org/glsa/201709-23
https://github.com/the-tcpdump-group/tcpdump/commit/42073d54c53a496be40ae84152bbfe2c923ac7bc
https://github.com/the-tcpdump-group/tcpdump/commit/35d146b7a66496d72cdeb95ccb33ab80a265ce90
https://access.redhat.com/errata/RHEA-2018:0705
http://www.tcpdump.org/tcpdump-changes.txt