Donato Ferrante

Application: FreeChat
http://sourceforge.net/projects/vbfreechat/

Version: 1.1.1a

Bug: Denial Of Service

Author: Donato Ferrante
e-mail: fdonato (at) autistici (dot) org [email concealed]
web: www.autistici.org/fdonato

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

1. Description
2. The bug
3. The code
4. The fix

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

----------------
1. Description:
----------------

Vendor's Description:

"FreeChat is a webserver with support for a browser based streaming
chat written in Visual Basic 6. The chat so far supports multiple
rooms (public/private), graphical emicons, whispering, multiple
languages and more."

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

------------
2. The bug:
------------

The server is not able to manage crafted strings. In fact it will
crash.

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

-------------
3. The code:
-------------

To test the vulnerability simply send to the chat server,
a string like:

"aaaaa"

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

------------
4. The fix:
------------

No fix.
The vendor has not answered to my signalations.

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

[ reply ]