From:             william at activeminds dot nl
Operating system: FreeBSD
PHP version:      4.3.7
PHP Bug Type:     *General Issues
Bug description:  php_exec_dir

Description:
------------
It is possible to run commands and bypass the exec block.

Reproduce code:
---------------
$foo=`ps aux`;
echo nl2br($foo);
$foo=`;ps aux`;
echo nl2br($foo);

Expected result:
----------------
it bypasses the exec block and excutes the ps due to the `;` as bash
interupts as a new command.


-- 
Edit bug report at http://bugs.php.net/?id=28909&edit=1
-- 
Try a CVS snapshot (php4):  http://bugs.php.net/fix.php?id=28909&r=trysnapshot4
Try a CVS snapshot (php5):  http://bugs.php.net/fix.php?id=28909&r=trysnapshot5
Fixed in CVS:               http://bugs.php.net/fix.php?id=28909&r=fixedcvs
Fixed in release:           http://bugs.php.net/fix.php?id=28909&r=alreadyfixed
Need backtrace:             http://bugs.php.net/fix.php?id=28909&r=needtrace
Need Reproduce Script:      http://bugs.php.net/fix.php?id=28909&r=needscript
Try newer version:          http://bugs.php.net/fix.php?id=28909&r=oldversion
Not developer issue:        http://bugs.php.net/fix.php?id=28909&r=support
Expected behavior:          http://bugs.php.net/fix.php?id=28909&r=notwrong
Not enough info:            http://bugs.php.net/fix.php?id=28909&r=notenoughinfo
Submitted twice:            http://bugs.php.net/fix.php?id=28909&r=submittedtwice
register_globals:           http://bugs.php.net/fix.php?id=28909&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=28909&r=php3
Daylight Savings:           http://bugs.php.net/fix.php?id=28909&r=dst
IIS Stability:              http://bugs.php.net/fix.php?id=28909&r=isapi
Install GNU Sed:            http://bugs.php.net/fix.php?id=28909&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=28909&r=float

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