WebApp Sec mailing list archives
Re: Recent App Test
From: Saqib.N.Ali () seagate com
Date: Thu, 19 Aug 2004 09:43:16 -0700
I changed the url parameter to something like url=www.google.com and google appeared in my browser. Next, i changed the url to url=www. whatismyip.com, hoping that the ip address of the webserver would be displayed, however, only my ip address was displayed.
This type of script commonly used in apps where the system is counting the number of hits to URL.
This means that my browser is loading the url parameter as opposed to the webserver script fethching the url and then displaying it for me in my browser right? Is this a security issue?
How can this be a security issue?
Assuming that it was the actual webserver script fetching the url parameter and then displaying it for me,
This is quite common too. See: 1) http://html2pdf.adfinis.com/render.php?URL=http://validate.sf.net&FORMAT=.pdf 2) http://www.danvine.com/icapture/
I've come up with a few vulnerabilities (listed below) and was hoping that people might like to share some of their ideas.
Yes this can be used to view/access site that blocked by firewalls.
1) Can use vulnsite as a proxy (& hack other sites)
Maybe. See above.
2) Can port scan using the vuln site by changing url=www.website.com to url=www.sitetoscan.com:port
Maybe.
3) Can connect to & port scan machines behind the firewall.
Yes. If you are behind a firewall that is blocking access to a website, you can use the above 2 mentioned URL to get the content from those sites. In Peace, Saqib Ali http://validate.sf.net
Current thread:
- Recent App Test ramatkal (Aug 19)
- Re: Recent App Test Adam Tuliper (Aug 20)
- Re: Recent App Test Rogan Dawes (Aug 20)
- Re: Recent App Test Bill Pennington (Aug 20)
- Re: Recent App Test Saqib . N . Ali (Aug 20)
- Message not available
- Re: Recent App Test Blake Schneider (Aug 21)
- <Possible follow-ups>
- Re: Recent App Test Amit Klein (Aug 20)
- RE: Recent App Test stevenr (Aug 20)