Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation

Don't Trust The Client - Re: Security with open() in CGI scripts

by metadoktor (Hermit)
on Feb 26, 2002 at 07:10 UTC ( #147497=note: print w/replies, xml ) Need Help??

in reply to Security with open() in CGI scripts

In general, do not accept any input from the client (compare whatever you receive against an internal list of what is acceptable), but if you have to accept input from the client then make sure that it conforms to the kind of data that you are make sure it doesn't exceed a certain length, that it doesn't have strange characters, that it has the proper order of chars, etc).

Some classic documents about computer security:

W3 Security FAQ by Lincoln Stein and John Stewart

Secure Programming Checklist by Simson Garfinkel and Gene Spafford

Perl CGI Problems in Phrack Magazine, Vol 9, Issue 55 by Rain Forest Puppy


"The doktor is in."

  • Comment on Don't Trust The Client - Re: Security with open() in CGI scripts

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://147497]
[marto]: pointing out the advantages of cpan modules is well worth in, as both developer and $client/$company benefit greatly
[Tux]: $src =~ m{^(.*),(.*)$/ and $2 !~ $valid and $src = $1;
[Tux]: s,/,},

How do I use this? | Other CB clients
Other Users?
Others taking refuge in the Monastery: (9)
As of 2018-05-27 10:51 GMT
Find Nodes?
    Voting Booth?