https://bugzilla.mindrot.org/show_bug.cgi?id=2685
Bug ID: 2685
Summary: Case sensitive hostname matching
Product: Portable OpenSSH
Version: 7.4p1
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: P5
Component: ssh
Assignee: [email protected]
Reporter: [email protected]
Created attachment 2951
--> https://bugzilla.mindrot.org/attachment.cgi?id=2951&action=edit
make host matching in ssh case insensitive
Currently ssh (and possibly sshd) match hostnames in a case sensitive
manner. While recognise there are reasons this can be desired
behaviour, the comments in code (and the generally accepted property of
hostnames being case-instensitive - RFC 4343) suggest otherwise.
Comment for match_hostname() (in match.c) even mentions explicitly,
that the hostname is expected to be lowercased, which it has been not,
since the d56b44d2dfa093883a5c4e91be3f72d99946b170 +
eb6d870a0ea8661299bb2ea8f013d3ace04e2024 commit combo.
I have no clear position on what to do with originalhost matching,
though I would suggest handling it in the same way to prevent gotcha
(maybe by lowercasing the argument passed to match_host() and not
expecting the caller to do it), so the attached patch only handles
(possibly expanded) hostname matching.
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