Case insensitive string comparison uses an insecure hashing algorithm which can be compromised in .NET Core 1.x (Unix) and .NET Core 2.0. The attack vector could be a Dictionary which uses case invariant keys.
Name: Ben Adams (Illyriad Games)
This issue has been addressed in the following products:
.NET Core on Red Hat Enterprise Linux
Via RHSA-2018:0522 https://access.redhat.com/errata/RHSA-2018:0522