Vulnerability identifier: #VU10334

Vulnerability risk: Low

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

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

---

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

---

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.