Bug #60965 [NEW]: Buffer overflow on htmlspecialchars/entities with $double=false

From: Date: Fri, 03 Feb 2012 10:48:30 +0000
Subject: Bug #60965 [NEW]: Buffer overflow on htmlspecialchars/entities with $double=false
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-167093@lists.php.net to get a copy of this message 
From:             cataphract
Operating system: Any
PHP version:      5.4SVN-2012-02-03 (SVN)
Package:          Reproducible crash
Bug Type:         Bug
Bug description:Buffer overflow on htmlspecialchars/entities with $double=false

Description:
------------
Long entities can cause a buffer overflow because the loop only guarantees
40 bytes available in beginning.

Test script:
---------------
<?php
echo
htmlspecialchars('"""""""""""""""""""""""""""""""""""""""""""""&#x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005;',
ENT_QUOTES, 'UTF-8', false), "\n";


-- 
Edit bug report at https://bugs.php.net/bug.php?id=60965&edit=1
-- 
Try a snapshot (PHP 5.4):            https://bugs.php.net/fix.php?id=60965&r=trysnapshot54
Try a snapshot (PHP 5.3):            https://bugs.php.net/fix.php?id=60965&r=trysnapshot53
Try a snapshot (trunk):              https://bugs.php.net/fix.php?id=60965&r=trysnapshottrunk
Fixed in SVN:                        https://bugs.php.net/fix.php?id=60965&r=fixed
Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=60965&r=needdocs
Fixed in release:                    https://bugs.php.net/fix.php?id=60965&r=alreadyfixed
Need backtrace:                      https://bugs.php.net/fix.php?id=60965&r=needtrace
Need Reproduce Script:               https://bugs.php.net/fix.php?id=60965&r=needscript
Try newer version:                   https://bugs.php.net/fix.php?id=60965&r=oldversion
Not developer issue:                 https://bugs.php.net/fix.php?id=60965&r=support
Expected behavior:                   https://bugs.php.net/fix.php?id=60965&r=notwrong
Not enough info:                     https://bugs.php.net/fix.php?id=60965&r=notenoughinfo
Submitted twice:                     https://bugs.php.net/fix.php?id=60965&r=submittedtwice
register_globals:                    https://bugs.php.net/fix.php?id=60965&r=globals
PHP 4 support discontinued:          https://bugs.php.net/fix.php?id=60965&r=php4
Daylight Savings:                    https://bugs.php.net/fix.php?id=60965&r=dst
IIS Stability:                       https://bugs.php.net/fix.php?id=60965&r=isapi
Install GNU Sed:                     https://bugs.php.net/fix.php?id=60965&r=gnused
Floating point limitations:          https://bugs.php.net/fix.php?id=60965&r=float
No Zend Extensions:                  https://bugs.php.net/fix.php?id=60965&r=nozend
MySQL Configuration Error:           https://bugs.php.net/fix.php?id=60965&r=mysqlcfg

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