PHP 5.4SVN-2012-02-03 htmlspecialchars/entities Buffer Overflow

日期: 2012/02/04 | 标签: | 游览：410
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";

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