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Doc Bug #64069 Function strcasecmp will return NULL if it gets an array.
Submitted: 2013-01-25 08:55 UTC Modified: 2013-01-25 10:46 UTC
Votes:1
Avg. Score:3.0 ± 0.0
Reproduced:0 of 0 (0.0%)
From: cayce245 at gmail dot com Assigned:
Status: Not a bug Package: Documentation problem
PHP Version: Irrelevant OS:
Private report: No CVE-ID:
 [2013-01-25 08:55 UTC] cayce245 at gmail dot com
Description:
------------
---
From manual page: http://www.php.net/function.strcasecmp#refsect1-
function.strcasecmp-returnvalues
---

Function strcasecmp will return NULL if it gets an array. Now it seems that 
function will return only an integer, and this 
assumption can be a security risk, like in the example bellow.

Test script:
---------------
<?php
$pass = isset($_GET['pass'])?$_GET['pass']:'';

    // Query /?pass=[] will authorize user
if ( strcasecmp( $pass, '123456' ) == 0 )
{
  echo 'You successfully logged in.';
}


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History

AllCommentsChangesGit/SVN commitsRelated reports
 [2013-01-25 09:18 UTC] cayce245 at gmail dot com
Query /?pass[] will authorize user **
 [2013-01-25 10:46 UTC] krakjoe@php.net
-Status: Open +Status: Not a bug
 [2013-01-25 10:46 UTC] krakjoe@php.net
It is established behavior for function that receive the wrong type of 
argument(s) to return null.
 
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