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HomeHomeUsing DNN Platf...Using DNN Platf...Upgrading DNN P...Upgrading DNN P...Security ExploitSecurity Exploit
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9/13/2010 7:12 AM
 
Sebastian Leupold


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www.dnnwerk.de
Joined: 3/8/2004
Posts: 46212
There is a known upload vulnerability in old DNN versions, you need upgrading at least to 4.9.5.
Cheers from Germany,
Sebastian Leupold

dnnWerk - The DotNetNuke Experts   German Spoken DotNetNuke User Group

Speed up your DNN Websites with TurboDNN
 
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9/13/2010 8:45 AM
 
dkong

Joined: 3/17/2010
Posts: 11
i made sure that all of my third party modules had the highest level of security on them. i'm not sure if it helped but i haven't had an issues since.
 
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9/13/2010 9:53 AM
 
Arif Shah

Joined: 9/27/2005
Posts: 89
As I was just preparing myself for a DNN Upgrade I came across this blog which highlighted a security loophole in older versions of DNN:

http://blog.aggregatedintelligence.co...  

Curiosity led me to trying the loophole in www.dotnetnuke.com and seems like I have successfully managed to upload 'sampletext.txt' file under 'Users/255/01/-1' folder. Please advise if this is expected behaviour...if so how does this stop executable files being uploaded on the site?

We have just been discovering .jpg and .txt files on our server with embedded asp code.
 
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9/13/2010 10:25 AM
 
Arif Shah

Joined: 9/27/2005
Posts: 89
Sorry...seems like my login details were retained from the forum. Perhaps that might be the reason for me getting permission to upload the file.
 
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9/22/2010 6:38 PM
 
Ismet Dumlupinar


Joined: 4/8/2004
Posts: 882
Arif there is a vulnerability in previous versions of dnn lower then 4.9.5 and combined within iis semicolon bug, this can result shell placements on your website. You need to secure your site by upgrading, or hardening old version if you can't afford to upgrade due to reasons such as legacy modules. Users can drop me an email, so that i can help you during upgrade and hardening. There is also another ASP.NET security issue, which i recommend upgrade to 5.5.1 at the time of writing this post.
Or-Rouge Team Or-Rouge
Personally recommend Hostgator for hosting single or multiple DotNetNuke Websites.
DotNetNuke Tips and Tutorials
Install DotNetNuke to Godaddy root
DotNetNuke Türkçe Hakkinda Hersey
 
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