bugtraq - Software PBLang 4.65 pm.php XSS vulnerability

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Date: 22 Feb 2005 21:34:16 -0000
From: Raven <raven@...-security.com>
To: bugtraq@...urityfocus.com
Subject: Software PBLang 4.65 pm.php XSS vulnerability

 [][][][][][][][][][][][][][][][][][][][][][][][][][]
[][][]  
 []  
 [] HRG - Hackerlounge Research Group 
 [] Release: HRG003 
 [] Friday 11-02-05  
 [] Software PBLang 4.65 pm.php XSS vulnerability  
 []  
 [] The author can't be held responsible for any 
damage  
 [] done by a reader. You have your own resonsibility  
 [] Please use this document like it's meant to.  
 []  
 [][][][][][][][][][][][][][][][][][][][][][][][][][]
[][][]  

 Vulnerable: PBLang 4.65 (current) (and earlier?)  

 ---  

 General information:  

 PBLang is an international BBS-software based on 
PHP. It does not require any database but bases on a 
flatfile system. Many professional features. More 
info on the project website.  

 ---  

 Description:  

 When a user receives a PM with a HTML in the 
subject, it will be executed as soon as the user 
opens his pm.php. This may give an attacker the 
opportunity for a session steal. The link for the PM 
will not be linked, so viewing the contents of the 
message gets harder. An attacker could also flood a 
users PM box by sending messages with a title like 
&lt;script&gt;  
 and the PM will not appear in the receivers window, 
while it will say he/she has got a new PM.  

 ---  

 Proof Of Concept:  

 Type in the subject box "&lt;script 
language="javascript">alert("Hackerlounge.com pwns 
joo");&lt;/script&gt;" and submit. An alertbox with the 
text "Hackerlounge.com pwns joo" should come up when 
a user visits pm.php.  

 ---  

 Fix and Vendor status:  

Vendor has been notified, expect an official patch 
soon. 

 ---  

Credit: 

HRG - Hackerlounge Research Group 
Hackerlounge.com 

 [][][][][][][][][][][][][][][][][][][][][][][][][][]
[][][]  
 []  
 [] HRG - Hackerlounge Research Group 
 [] Release: HRG003 
 [] Friday 11-02-05  
 [] Software PBLang 4.65 pm.php XSS vulnerability  
 []  
 [] The author can't be held responsible for any 
damage  
 [] done by a reader. You have your own resonsibility  
 [] Please use this document like it's meant to.  
 []  
 [][][][][][][][][][][][][][][][][][][][][][][][][][]
[][][]