In Wireshark 2.2.0 to 2.2.5 and 2.0.0 to 2.0.11, the IMAP dissector could crash, triggered by packet injection or a malformed capture file. This was addressed in epan/dissectors/packet-imap.c by calculating a line's end correctly.
http://www.securityfocus.com/bid/97636
http://www.securitytracker.com/id/1038262
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13466
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.html
Source: MITRE
Published: 2017-04-12
Updated: 2019-03-01
Type: CWE-74
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH