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Bug #27914 htmlentities() glitch
Submitted: 2004-04-07 18:26 UTC Modified: 2004-04-08 11:05 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:0 (0.0%)
Same OS:0 (0.0%)
From: slunta at msn dot com Assigned:
Status: Not a bug Package: Unknown/Other Function
PHP Version: Irrelevant OS: Irrelevant
Private report: No CVE-ID: None
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 [2004-04-07 18:26 UTC] slunta at msn dot com 
Description:
------------
There is an htmlentities glitch. If you have a message in a textarea box, and you use </textarea>, it allows html after that to be parsed on a message preview screen if there is one.

Reproduce code:
---------------
$input=htmlentities($input);

Expected result:
----------------
I can't really give you a code without giving out my entire message screen, let's just say that with this textarea box I'm typing in right now, if I decide to type in </textarea>, and then something like <marquee>glitch</marquee>, the <marquee> would be parsed at the bottom of the screen. My expected result is to not have this happen.

Actual result:
--------------
Of course, the actual result is allowing html after the </textarea> to be parsed. If someone used

</textarea>
<!#cmd.execute="[database query]">

Then it would allow a db query to execute on servers if asp is mixed with php code. This is a dangerous problem, and needs a fix. All I'm saying is that htmlentities() needs to be allowed to block </textarea> for things like message previews.

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 [2004-04-08 06:34 UTC] derick@php.net 
Not enough information was provided for us to be able
to handle this bug. Please re-read the instructions at
http://bugs.php.net/how-to-report.php

If you can provide more information, feel free to add it
to this bug and change the status back to "Open".

Thank you for your interest in PHP.
 [2004-04-08 11:05 UTC] sniper@php.net 
And there is no such PHP version as "Irrelevant"..
 
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