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Security: default value for text recordset parameter

Thread began 2/03/2016 4:54 am by Sweens | Last modified 2/03/2016 2:19 pm by Ray Borduin | 155 views | 6 replies |

Sweens

Security: default value for text recordset parameter

Hi

I'm after a bit of advice, if someone can help. I'm moving away from integer parameters in recordsets (e.g. where id = 1) to text values, as I'm trying to use friendly urls.

So a recordset might have where pg_slug = $_GET['slug']. All this works and the correct page is returned, but I'm really wanting to know if there is a potential security risk here, as I have the default value as 'hjgubjvyu64565dx' (or similar random guff). Should the default text value be % or something else - or does it not matter?

Many thanks

Chris

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Ray BorduinWebAssist

I'm not sure what code you are using exactly, so I can't comment on a security risk. That default value will presumably not return any results, so there is no security risk in that particular aspect.

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Sweens

Thanks Ray

I'm using variants on:

<?php
$rsPageMenu = new WA_MySQLi_RS("rsPageMenu",$connSite_i,0);
$rsPageMenu->setQuery("SELECT `pages`.`PgID`, `pages`.`PgTitle`, `pages`.`SiteID`, `pages`.`PgDesc`, `pages`.`MemOnly`, `pages`.`pg_url`, `sites`.`short_url`, pages.PgMainPic, pages.PgMainPicAltText FROM `pages` Inner Join `sites` ON `sites`.`SiteID` = `pages`.`SiteID` WHERE `sites`.`short_url`=? AND pages.UnderPag_PgID = 0 AND pages.PgTypeID=1 AND (pages.DisplayUntil IS NULL OR pages.DisplayUntil = '') ORDER BY pages.PgSortOrder ");
$rsPageMenu->bindParam("s", "".$_GET['su'] ."", "jhg ytokjiyr22t8cxfdxsfg"); //p1
$rsPageMenu->execute();
?>

it's the value 'jhg ytokjiyr22t8cxfdxsfg' I'm not sure of

Cheers
Chris

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Ray BorduinWebAssist

There is no security issue in using that value. I usually just use "-1" since presumably you would never have that as the short_url, but really any value that you are sure will never be in that column will work.

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Sweens

Many thanks Ray. I assume that where I want the default value to be a 'real' short_url, there is no security implication?

Cheers
Chris

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Ray BorduinWebAssist

Nope that would be fine too... it would just mean that page would show up if the page was visited directly.

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Sweens

Thanks for your help Ray - very reassuring!

Cheers
Chris

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