Vulnerability CVE-2016-7479


Published: 2017-01-11   Modified: 2017-01-13

Description:
In all versions of PHP 7, during the unserialization process, resizing the 'properties' hash table of a serialized object may lead to use-after-free. A remote attacker may exploit this bug to gain arbitrary code execution.

Vendor: PHP
Product: PHP 
Version:
7.1.0
7.0.9
7.0.8
7.0.7
7.0.6
7.0.5
7.0.4
7.0.3
7.0.2
7.0.14
7.0.12
7.0.11
7.0.10
7.0.1
7.0.0

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial

 References:
http://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php-7
http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdf
http://www.securityfocus.com/bid/95151
https://bugs.php.net/bug.php?id=73092
https://www.youtube.com/watch?v=LDcaPstAuPk

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