[Full-disclosure] Lpanel.NET's Lpanel (all versions up to and including 1.59) is vulnerable to the unauthorized viewing of client invoice information.

["Zackarin Smitz" <zackerius12@xxxxxxxxxxxxx>]

Subject:
Lpanel.NET's Lpanel (all versions up to and including 1.59) is vulnerable to 
the unauthorized viewing of client invoice information.


Severity:
High; This vulnerability allows an attacker unauthorized viewing of other 
clients' invoice information.


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 ?inv? GET variable of viewreceipt.php (i.e. 
http://yourdomain.com/lpanel/help/viewreceipt.php?inv=50) is not authenticated 
against the currently logged in user. Thus, by replacing the number specified 
by the ?inv? variable, one can view details of any other invoice on the system. 
Note that invoice IDs are an automatically incremented value, and therefore 
finding another client's invoice is as simple as writing a script to loop over 
the requests, gathering the information to a common location.


Workaround:
This bug can be fixed by checking that the currently logged in user owns the 
invoice associated with the ID specified by the ?inv? GET variable.


Vendor Contact:
Lpanel.NET's Lpanel
URL: http://www.lpanel.net/
Email: sales@xxxxxxxxxx (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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