In Wireshark 2.2.0 to 2.2.5 and 2.0.0 to 2.0.11, the NetScaler file parser could go into an infinite loop, triggered by a malformed capture file. This was addressed in wiretap/netscaler.c by ensuring a nonzero record size.
https://www.wireshark.org/security/wnpa-sec-2017-14.html
https://security.gentoo.org/glsa/201706-12
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13478