Bugtraq mailing list archives

Re: Another NEW mIRC bug and ALL mIRC Exploit patches


From: tarmon () HOTMAIL COM (Mike Zimmerman)
Date: Sat, 25 Jul 1998 21:36:34 -0400


The author of mIRC has released v5.41 as of today to address these security
holes and various other bugs in the 5.4 release. It can be found at
http://www.mirc.co.uk/.

Mike Zimmerman


At 08:17 AM 7/24/98 -0400, Derek Reynolds wrote:
History of Events: (Remote Exploits)

07/18/98 - Someone on DALnet finds problem with DCC SEND and DCC RESUME
(exploit made)

07/20/98 - $asctime bug revealed

07/21/98 - myn discovers a large problem with $calc and notices that most
scripts that
           use on ctcpreply ping perform a  $calc. He then implements the
$asctime bug
           into on ctcpreply ping which ables a user to remotely crash the
mIRC client

07/22/98 - v9 evaluates myn's bug finding and plays with on ctcpreply some
more and                finds that $calc evaluates custom alias's or
functions.

07/23/98 - Some uninformed person believes that it is on IRCN native and
posts a             message to rootshell.com and forgets the big picture.
Any mIRC script that             makes use of the event "ON CTCPREPLY PING"
which does a $calc or any other             remote/event that uses $calc is
exploitable.


Most people are only patching themselves against the $calc bug, but are
still wondering why their mIRC keeps crashing.. Its because they have not
patched themselves against the 2 other remote mIRC exploits.

Below is the patch for ALL known remote mIRC exploits.
to install it type "/load -rs m54-fix-sploits.mrc"

Peace.

myn@efnet







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