Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl-Sensitive Sunglasses
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

But in the context of taint checking w/ CGI, isn't the main point just that you should scrub your CGI parameters?? Your web server should not be set-UID to root so the security problem is that stuff from "the world" needs to be checked.

So isn't a reasonable solution as simple as replacing the few CGI.pm methods that get data from the client with versions that require "scrubbing instructions"? I'd probably make a tiny hack to CGI.pm to prevent it from being used directly and then make a CGI::Safe where the param() method is a fatal error but safeparam() requires an extra argument that is the scrubbing instructions.

I'd support a few formats of scrubbing instructions. You should make the most common case of requiring the parameter value to match /^\w[-\w.]*\z/ be very easy. But if a ref to a regex is provided, then apply the regex and die if it fails, return $1 if successful. If a code ref is provided, just run that code.

        - tye (but my friends call me "Tye")

In reply to (tye)Re: Alternatives to Taint Checking? by tye
in thread Alternatives to Taint Checking? by Ovid

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!
  • 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, 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, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others surveying the Monastery: (4)
    As of 2014-09-20 23:32 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      How do you remember the number of days in each month?











      Results (164 votes), past polls