FreeChat version 1.1.1a has problems parsing certain strings resulting in a denial of service.
20beb4c3ae2a31f0386c7c811b2717bc6cddff10f7bda6a57a1192b002724d33
Donato Ferrante
Application: FreeChat
https://sourceforge.net/projects/vbfreechat/
Version: 1.1.1a
Bug: Denial Of Service
Author: Donato Ferrante
e-mail: fdonato@autistici.org
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