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Bug #41252 calling mcrypt_generic without first calling mcrypt_generic_init crashes
Submitted: 2007-05-01 15:19 UTC Modified: 2007-05-01 16:07 UTC
From: terrafrost@php.net Assigned: derick (profile)
Status: Closed Package: Reproducible crash
PHP Version: 4.4.6 OS: Windows XP
Private report: No CVE-ID: None
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 [2007-05-01 15:19 UTC] terrafrost@php.net 
Description:
------------
Calling mcrypt_generic() without first calling mcrypt_generic_init() results in a crash on PHP 4.4.6 / Windows XP running the latest version of mcrypt from http://ftp.emini.dk/pub/php/win32/mcrypt/.  PHP 5 is unaffected.

Reproduce code:
---------------
<?php
$td = mcrypt_module_open(MCRYPT_DES, '', MCRYPT_MODE_ECB, '');
echo mcrypt_generic($td,'aaaaaaaa');
?>

Expected result:
----------------
There should be some sort of error.  Here's what PHP 5.2.1 says:

Warning: mcrypt_generic(): Operation disallowed prior to mcrypt_generic_init() in {filename} on line 3

Actual result:
--------------
It crashes.

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 [2007-05-01 15:39 UTC] derick@php.net 
I can reproduce this on Linux. Working on backporting the extra checks.
 [2007-05-01 16:07 UTC] derick@php.net 
This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
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