#VU10334 Deserialization of untrusted data in PHP - CVE-2016-9138

Vulnerability identifier: #VU10334

Vulnerability risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-9138

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to unsafe handling of serialized data when processing property modification during __wakeup(). A remote attacker can pass specially crafted serialized data to the application and cause denial of service attack.

Mitigation
Update to version 5.6.28 or 7.0.13.

Vulnerable software versions

PHP: 5.5.0 - 5.5.38, 5.6.0 - 5.6.27, 7.0.0 - 7.0.12

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External links
https://bugs.php.net/bug.php?id=73147

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.