On 23 November 2010 Fox-IT discovered a serious vulnerability in the open source content management system DotNetNuke. The vulnerability leads to full compromise of the DotNetNuke environment. The vendor has been notified and a fix is available.

Details

CVE reference: -
Vulnerability discovered: November 23, 2010
Discovered by: Daniël Niggebrugge, Fox-IT BV (https://www.fox-it.com/)
Reported to vendor: November 30, 2010
Fix available: Yes
Product DotNetNuke is an open source Content Management System (CMS) based on Microsoft ASP.NET. DotNetNuke powers over 600,000 production web sites worldwide. More information can be found at: http://www.dotnetnuke.com/Intro/AtAGlance/tabid/1579/Default.aspx

Vulnerability

An anonymous attacker can upload ASPX files, access these files and is then able to execute arbitrary commands on the web server. This leads to full compromise of the DotNetNuke environment and possibly compromise of other web applications and/or information on the web server.

Fox-IT verified DotNetNuke version 05.06.00 (459) to be vulnerable to this issue.

Fix This issue has been fixed in DotNetNuke version 05.06.01. Fox-IT advises to test and deploy this new version as soon as possible.

Details

The vulnerability is caused by several web pages of DotNetNuke that insufficiently enforce authorization checks. Depending on the function of the vulnerable web page, several issues might arise. The most severe issue makes it possible to upload executable files without proper authorizations and execute arbitrary commands on the web server.

References DotNetNuke security bulletin: http://www.dotnetnuke.com/securitybulletinno46/tabid/2113/Default.aspx

You can download the advisory in PDF form here.