On Jan 16, 2007, at 11:10 PM, DokFLeed wrote:
Hi,
I posted this earlier to webappsec@securityfocus.com with no luck ,
does anyone know how to bypass magic quotes? a proven working way .
stripslashes(). :-)
It's fairly easy to get a developer to put stripslashes() on a
website too, if one just slowly adds posts that seem like they can be
tracked back to magic quotes... "I\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
\'m having problems...."
This is why magic quotes/slashes was getting turned off all over the
place..... excessive escaping before db inserts, as variable values
were passed from page to page.
Well, that, and the escaping wasn't data-engine specific. Some data
engines use \', others use '', others need no ' escaping, and since
many modern db engines can use *any* delimiter, for any language,
"magic quotes" was simply the wrong level to apply data filtering at.
example is, in such a simple SQL like
"SELECT * from USERS WHERE id =$id";
I am looking for ways to by pass magic quotes to inject this
INTO OUTFILE '/home/z.php'
INTO OUTFILE %/home/z.php% works, if "%" is the field delimiting
character being used. Magic quotes totally fails in that scenario.
point is, if magic quotes can stop this, so why is it going to be
removed in php6? it can simply stay and be activated or deactivated
on will.
It was a great idea, in a much less complex world.
and if there is a way to by pass, I want to include it in my check
GET/POST inputs.
Any character can be used, by many db engines, as a delimiter. It is
bad programming practice to assume that *any* bulk filtering
mechanism will work, so your GET/POST idea is flawed.
The problem is not magic quotes.
The problem is not replacing magic quotes.
The problem *is* validating each piece of data received, and dealing
with it in an appropriate manner, regardless of the db engine used,
charset used, delimiters used.
-Ronabop
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