Full Disclosure: Lpanel.NET's Lpanel (all versions up to and including 1.59) is vulnerable in that it allows an attacker to respond to any support ticket on the system.

["Zackarin Smitz" <zackerius12 () linuxmail org>]

Subject:
Lpanel.NET's Lpanel (all versions up to and including 1.59) is vulnerable in that it allows an attacker to respond to 
any support ticket on the system.


Severity:
Average; Depending upon how the attacker exploits this, this vulnerability could be extremely severe, but for the most 
part is average, and can only cause frustration and confusion among the support department.


Preamble:
(Taken from http://www.lpanel.net/)
Lpanel is a Complete Web Hosting Billing & Automation Suite that installs over cPanel, WHM.

Created from the ground up from cPanel by web hosting administrators, Lpanel has everything a cPanel hosting business 
needs and will ever need. Constantly expanding to meet the quickly developing web hosting market, Lpanel is the only 
complete management solution available today for cPanel web hosts. From multi-staff tiers, automated signups, reseller 
management, network utilities, automated SSL, as well as a full array of “Added Services” and detailed efficiency 
reports - Lpanel is always steps ahead of the rest.


Problem:
The file view_ticket.php displays a form to the user, that allows responses to be posted to tickets. However the “pid” 
POST variable is not authenticated against the current session after being posted. As such, an attacker could modify 
the form displayed by this file (i.e. http://yourdomain.com/lpanel/help/view_ticket.php?pid=50), and merely change the 
action attribute of the form element to a full URI, and also change the support ticket ID represented by the “pid” POST 
variable to the support ticket the attacker wishes to respond to. The attacker must have an unprivileged user account 
on the system. Once the form has been modified, a simple post will render a response to the support ticket specified by 
“pid”.


Workaround:
This bug can be fixed by checking that the “pid” GET variable actually represents a support ticket owned by the user of 
the current session.


Vendor Contact:
Lpanel.NET's Lpanel
URL: http://www.lpanel.net/
Email: sales () lpanel net (I was unable to find a more relevant email contact)
Mailing Address:
  Lpanel.NET
  PO Box 940876
  Miami, Florida 33194-0056
  United States
Phone: 614-441-4838


Disclosure Timeline:
Vendor Notified: June 6, 2005
Public Release: June 6, 2005


About the Author:
The author is in between life paths at the moment, but is currently a software engineer at a company to remain unnamed. 
When not at his computer, the author enjoys doing a great many things, most of which he has lost all time for, or lacks 
people to do those things with in his current lifestyle. As such he finds more time for work, or just visits 
Blockbuster, and when all else fails, fabricates reports such as this.

The author is posting this message anonymously in order to avoid potential legal consequences, although he is having 
trouble seeing any potential consequences as feasible, considering the vendor does not release a plain-text version of 
their license (the license is actually encoded, and when viewed, renders a PHP parse error).


Greets:
I'd like to say hi to the team with which I work; you're all great. I'd also like to say hello to swoolley and 
tautology.

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