full-disclosure - mutt buffer overflow

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Date: Thu Aug 18 11:40:59 2005
From: j at pureftpd.org (Frank Denis (Jedi/Sector One))
Subject: mutt buffer overflow

  Peter,

On Thu, Aug 18, 2005 at 02:57:33AM -0600, Peter Valchev wrote:
>The problem is in the mutt attachment/encoding/decoding functions,
>specifically handler.c:mutt_decode_xbit() and the buffer
>bufi[BUFI_SIZE].

  Can you reproduce this if you recompile libiconv/gettext/mutt?

  I reported that bug on Jul 12, but in fact it only happened with
libiconv/gettext compiled against an OpenBSD libc before the mb*() changes,
but then running libc 38.2.

  An easier way to trigger this is ftp://ftp.00f.net/misc/mutt-crash-poc.mbox

  But the mutt's code doesn't actually look wrong.

  Best regards,

     -Frank.