In Wireshark 2.4.0 to 2.4.11, the ENIP dissector could crash. This was addressed in epan/dissectors/packet-enip.c by changing the memory-management approach so that a use-after-free is avoided. Upstream issue: https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14470 Upstream patch: https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=1c66174ec7aa19e2ddc79178cf59f15a654fc4fe
External References: https://www.wireshark.org/security/wnpa-sec-2019-05.html
Statement: This issue did not affect the versions of wireshark as shipped with Red Hat Enterprise Linux 5, 6, and 7.