Hi Alexander,
There are huge security implications of allowing users to upload to a web
server. Off the top of my head I'm thinking of things like an evil user
being able to use a phpshell via an evil .php page. The list is endless.
However, here are a few links you may find interesting.
http://www.acunetix.com/websitesecurity/php-security-4.htm
http://www.developershome.com/wap/wapUpload/wap_upload.asp?page=security
Again, it depends on whether you're running IIS or Apache as to the
seriousness of the security risk.
Good luck.
Tom
----- Original Message -----
From: Alexander Berezhnoy
To: webappsec@securityfocus.com
Sent: Thursday, November 09, 2006 9:12 AM
Subject: Files upload security considerations
Hi!
Recently we have got a new requirement for our system which consists
in allowing customers to send us their scanned documents. In this
connexion, I want to find an information about corresponding security
considerations with.
Namely,
- Ways of file delivery (HTTP POST, FTP, e-mail)
- Main risks
- Mitigations
- Formats (JPG, GIF, PDF)
- Signatures
- Known and historic vulnerabilities
We use Weblogic and Struts.
I realize, that there is not enough information to make any decision,
but, at least, there sould be some common considerations and "best
practices".
Thanks in advance,
Alexander.
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