By security issues I mean passing data upload fields to forms that may or may not be checking all data that comes to it.

It's one thing to send some screwed up data (or maybe even some spam to a contact form) but to be able to actually send files to the server is something that doesn't really suprise me but I never thought about it.

Even if the form knows better than to accept unknown data, it's still sending all that extra file data to the server.

Guess there's really no way to prevent that though.

I was also thinking whether or not it was possible to pass a hidden form field AS a file upload field. Like download specific C:\ files on which the user doesn't know they are uploading.

In reply to Re^2: CGI file uploads by Anonymous Monk
in thread CGI file uploads by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.