[Bug 3906] Misusing 'Match Host' in server config causes a crash at deferred connection time

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3906

Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
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   Attachment #3928|                            |ok?(dtucker at dtucker.net)
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--- Comment #5 from Damien Miller <djm at mindrot.org> ---
Created attachment 3928
  --> https://bugzilla.mindrot.org/attachment.cgi?id=3928&action=edit
fail on invalid Subsystem at parse time

I also noticed another problem with Subsystem parsing. A config like
this:

> Match host *
>    Subsystem blah

Will allow sshd to start but will fail with a config parse error (the
subsystem is missing the command argument) at runtime.

To avoid this we need to always parse both the subsystem name and
command.

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