[imp] malformated mailheader causes apache-segfault

[Joerg Friedrich]

Hi,

Today one of our users received a mail with a to:-header like this:

------
To: "someone at uni-konstanz.de,someother at uni-konstanz.de,
     lots-of-addresses at uni-konstanz.de,...
     ...
     ...
     ...
     ...
     ...
     ...
     ...
     hugo.habicht at uni-konstanz.de, last.address"@uni-konstanz.de>

--


The result is that the mailbox-overview containing this message cannot
displayed. And the apache process dies with a segmentation fault.

Note the problem is the ""-String spanning nearly ten lines. and this
""-String contained more than 1200 characters. php didn't log any error.
So I think this is a problem in libc-client, but I want to confirm this.

-- 
Jörg Friedrich
Das Unrecht, das dir geschieht, treibe rächend ab, aber nicht als
Individuum, sondern als Menschheit; diese soll sich nichts gefallen
lassen.
		-- Jean Paul