Vulnerability identifier: #VU526

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7417

CWE-ID: CWE-284

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

Description
The vulnerability allows a remote or local user to cause arbitrary code execution on the target system.
The weakness is caused by unserializing SplArray that leads to memory corruption error and allows a malicious user to execute arbitrary code.
Successful explotation of the vulnerability may result in arbitrary code execution on the vulnerable system.

Mitigation
Update to 5.6.26.
http://php.net/ChangeLog-5.php#5.6.26
Update to 7.0.11.
http://php.net/ChangeLog-7.php#7.0.11

Vulnerable software versions

PHP: 5.6.26, 7.0.11

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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