is that necessary to use "base64_decode" function

[sahareto]

is that necessary to use "base64_decode" function
becouse I want to but it in php.ini disable_function

and this function found on this file

attachment.php:290:             $filedata = base64_decode('R0lGODlhAQABAIAAAMDAwAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==');
cron.php:44:$filedata = base64_decode('R0lGODlhAQABAIAAAMDAwAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==');
includes/functions.php:2244:            return ($decode ? base64_decode($return) : $return); 

and when I disable this function its give me base64_decode is disable for security reason

I want to disable this function because some shell file decode them files to base64
my vbulletin version 3.8.4 patch level 1

[Lynne]

That is not default vbulletin. If you download the files from the vb.com download area and look at them, those lines are not in there. It looks like they have been added to your files.

[SecondV]

That is not default vbulletin. If you download the files from the vb.com download area and look at them, those lines are not in there. It looks like they have been added to your files.

Actually it is part of default vbulletin.

cron.php uses base64_decode to show a blank gif file, as does attachment.php

[sahareto]

yes its based on the vb files from ago
and really disable this function is very important to prevent some hacker methods
and I want to know, can vb developer discuss this and how its important to use this function in cron and attachment
and can the developer replace this function can be safe better ?
and thanks for advice

[Lynne]

Ah, good to know (I suppose ) I guess I just never noticed that being used in the vb code. Whenever I've seen it discussed, it's been a hacker using it.