From:
Operating system: all
PHP version: 5.3.5
Package: Output Control
Bug Type: Bug
Bug description:Output Buffer Dumps Data On Error
Description:
------------
When output buffering is turned on (via ob_start()) and an error is
encountered before a call to ob_end_* is called the entire contents of the
output buffer is dumped (to STDOUT) and there appears to be no way to
prevent the buffer from dumping - not even by setting an error handler,
etc.
This is a security issue since the output buffer may contain sensitive
information that is them dumped over to the user. Using set_error_handler
does not stop the dump - it appears the dump simply happens with no way to
intercept or prevent it.
Test script:
---------------
<?php
ob_start();
echo 123;
trigger_error('test error', E_USER_ERROR);
$contents = ob_get_contents();
ob_end_clean();
?>
Expected result:
----------------
(no output)
Actual result:
--------------
123
Fatal error: test error in ...
--
Edit bug report at http://bugs.php.net/bug.php?id=54114&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=54114&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=54114&r=trysnapshot53
Try a snapshot (trunk):
http://bugs.php.net/fix.php?id=54114&r=trysnapshottrunk
Fixed in SVN:
http://bugs.php.net/fix.php?id=54114&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=54114&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=54114&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=54114&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=54114&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=54114&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=54114&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=54114&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=54114&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=54114&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=54114&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=54114&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=54114&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=54114&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=54114&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=54114&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=54114&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=54114&r=mysqlcfg
