Beefy Boxes and Bandwidth Generously Provided by pair Networks
Do you know where your variables are?
 
PerlMonks  

Re: Re^2: hash collision DOS (CGI.pm protection)

by Jenda (Abbot)
on Jun 03, 2003 at 10:36 UTC ( [id://262618]=note: print w/replies, xml ) Need Help??


in reply to Re^2: hash collision DOS (CGI.pm protection)
in thread hash collision DOS

PodMaster is right. ->delete() comes too late. And even the $CGI::POST_MAX doesn't help much.

Imagine you have a file upload script. There you need to keep the $CGI::POST_MAX rather high so they may be able to post quite a few CGI parameters. And then even the creation of the hash that CGI.pm uses to store data may take a lot of time. And the grep and delete would only make the issue worse.

Jenda
Always code as if the guy who ends up maintaining your code will be a violent psychopath who knows where you live.
   -- Rick Osborne

Edit by castaway: Closed small tag in signature

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: note [id://262618]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others studying the Monastery: (5)
As of 2024-04-25 10:24 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found